* @link http://www.yiiframework.com/ * @copyright Copyright © 2008-2011 Yii Software LLC * @license http://www.yiiframework.com/license/ */ namespace yii\db\ar; /* 1. query $finder = Post::model()->find(array( 'select' => 'id, title', 'where' => 'id=123', 'with' => array( 'creator' => array( ), ), )); $post = $finder->first(); $posts = $finder->all(); foreach($finder as $post) { } foreach($finder->next(5) as $posts) { } 2. insert $post = Post::create(); $post->attributes = $_POST['Post']; $post->save(); 3. update 4. delete */ /** * ActiveRecord is the base class for classes representing relational data. * * It implements the active record design pattern, a popular Object-Relational Mapping (ORM) technique. * Please check {@link http://www.yiiframework.com/doc/guide/database.ar the Guide} for more details * about this class. * * @author Qiang Xue * @since 2.0 * * @property array $attributes */ abstract class ActiveRecord extends \yii\base\Model { const BELONGS_TO = 'CBelongsToRelation'; const HAS_ONE = 'CHasOneRelation'; const HAS_MANY = 'CHasManyRelation'; const MANY_MANY = 'CManyManyRelation'; /** * @var CDbConnection the default database connection for all active record classes. * By default, this is the 'db' application component. * @see getDbConnection */ public static $db; private static $_models = array(); // class name => model private $_md; // meta data private $_new = false; // whether this instance is new or not private $_attributes = array(); // attribute name => attribute value private $_related = array(); // attribute name => related objects private $_c; // query criteria (used by finder only) private $_pk; // old primary key value private $_alias = 't'; // the table alias being used for query /** * Constructor. * @param string $scenario scenario name. See {@link CModel::scenario} for more details about this parameter. */ public function __construct($scenario = 'insert') { if ($scenario === null) // internally used by populateRecord() and model() return; $this->setScenario($scenario); $this->setIsNewRecord(true); $this->_attributes = $this->getMetaData()->attributeDefaults; $this->init(); $this->attachBehaviors($this->behaviors()); $this->afterConstruct(); } /** * Sets the parameters about query caching. * This is a shortcut method to {@link CDbConnection::cache()}. * It changes the query caching parameter of the {@link dbConnection} instance. * @param integer $duration the number of seconds that query results may remain valid in cache. * If this is 0, the caching will be disabled. * @param CCacheDependency $dependency the dependency that will be used when saving the query results into cache. * @param integer $queryCount number of SQL queries that need to be cached after calling this method. Defaults to 1, * meaning that the next SQL query will be cached. * @return ActiveRecord the active record instance itself. */ public function cache($duration, $dependency = null, $queryCount = 1) { $this->getDbConnection()->cache($duration, $dependency, $queryCount); return $this; } /** * PHP sleep magic method. * This method ensures that the model meta data reference is set to null. * @return array */ public function __sleep() { $this->_md = null; return array_keys((array)$this); } /** * PHP getter magic method. * This method is overridden so that AR attributes can be accessed like properties. * @param string $name property name * @return mixed property value * @see getAttribute */ public function __get($name) { if (isset($this->_attributes[$name])) return $this->_attributes[$name]; elseif (isset($this->getMetaData()->columns[$name])) return null; elseif (isset($this->_related[$name])) return $this->_related[$name]; elseif (isset($this->getMetaData()->relations[$name])) return $this->getRelated($name); else return parent::__get($name); } /** * PHP setter magic method. * This method is overridden so that AR attributes can be accessed like properties. * @param string $name property name * @param mixed $value property value */ public function __set($name, $value) { if ($this->setAttribute($name, $value) === false) { if (isset($this->getMetaData()->relations[$name])) $this->_related[$name] = $value; else parent::__set($name, $value); } } /** * Checks if a property value is null. * This method overrides the parent implementation by checking * if the named attribute is null or not. * @param string $name the property name or the event name * @return boolean whether the property value is null */ public function __isset($name) { if (isset($this->_attributes[$name])) return true; elseif (isset($this->getMetaData()->columns[$name])) return false; elseif (isset($this->_related[$name])) return true; elseif (isset($this->getMetaData()->relations[$name])) return $this->getRelated($name) !== null; else return parent::__isset($name); } /** * Sets a component property to be null. * This method overrides the parent implementation by clearing * the specified attribute value. * @param string $name the property name or the event name */ public function __unset($name) { if (isset($this->getMetaData()->columns[$name])) unset($this->_attributes[$name]); elseif (isset($this->getMetaData()->relations[$name])) unset($this->_related[$name]); else parent::__unset($name); } /** * Calls the named method which is not a class method. * Do not call this method. This is a PHP magic method that we override * to implement the named scope feature. * @param string $name the method name * @param array $parameters method parameters * @return mixed the method return value */ public function __call($name, $parameters) { if (isset($this->getMetaData()->relations[$name])) { if (empty($parameters)) return $this->getRelated($name, false); else return $this->getRelated($name, false, $parameters[0]); } $scopes = $this->scopes(); if (isset($scopes[$name])) { $this->getDbCriteria()->mergeWith($scopes[$name]); return $this; } return parent::__call($name, $parameters); } /** * Returns the related record(s). * This method will return the related record(s) of the current record. * If the relation is HAS_ONE or BELONGS_TO, it will return a single object * or null if the object does not exist. * If the relation is HAS_MANY or MANY_MANY, it will return an array of objects * or an empty array. * @param string $name the relation name (see {@link relations}) * @param boolean $refresh whether to reload the related objects from database. Defaults to false. * @param array $params additional parameters that customize the query conditions as specified in the relation declaration. * This parameter has been available since version 1.0.5. * @return mixed the related object(s). * @throws CDbException if the relation is not specified in {@link relations}. */ public function getRelated($name, $refresh = false, $params = array()) { if (!$refresh && $params === array() && (isset($this->_related[$name]) || array_key_exists($name, $this->_related))) return $this->_related[$name]; $md = $this->getMetaData(); if (!isset($md->relations[$name])) throw new CDbException(Yii::t('yii', '{class} does not have relation "{name}".', array('{class}' => get_class($this), '{name}' => $name))); Yii::trace('lazy loading ' . get_class($this) . '.' . $name, 'system.db.ar.ActiveRecord'); $relation = $md->relations[$name]; if ($this->getIsNewRecord() && !$refresh && ($relation instanceof CHasOneRelation || $relation instanceof CHasManyRelation)) return $relation instanceof CHasOneRelation ? null : array(); if ($params !== array()) // dynamic query { $exists = isset($this->_related[$name]) || array_key_exists($name, $this->_related); if ($exists) $save = $this->_related[$name]; $r = array($name => $params); } else $r = $name; unset($this->_related[$name]); $finder = new CActiveFinder($this, $r); $finder->lazyFind($this); if (!isset($this->_related[$name])) { if ($relation instanceof CHasManyRelation) $this->_related[$name] = array(); elseif ($relation instanceof CStatRelation) $this->_related[$name] = $relation->defaultValue; else $this->_related[$name] = null; } if ($params !== array()) { $results = $this->_related[$name]; if ($exists) $this->_related[$name] = $save; else unset($this->_related[$name]); return $results; } else return $this->_related[$name]; } /** * Returns a value indicating whether the named related object(s) has been loaded. * @param string $name the relation name * @return boolean a value indicating whether the named related object(s) has been loaded. */ public function hasRelated($name) { return isset($this->_related[$name]) || array_key_exists($name, $this->_related); } /** * Returns the query criteria associated with this model. * @param boolean $createIfNull whether to create a criteria instance if it does not exist. Defaults to true. * @return CDbCriteria the query criteria that is associated with this model. * This criteria is mainly used by {@link scopes named scope} feature to accumulate * different criteria specifications. */ public function getDbCriteria($createIfNull = true) { if ($this->_c === null) { if (($c = $this->defaultScope()) !== array() || $createIfNull) $this->_c = new CDbCriteria($c); } return $this->_c; } /** * Sets the query criteria for the current model. * @param CDbCriteria $criteria the query criteria */ public function setDbCriteria($criteria) { $this->_c = $criteria; } /** * Returns the default named scope that should be implicitly applied to all queries for this model. * Note, default scope only applies to SELECT queries. It is ignored for INSERT, UPDATE and DELETE queries. * The default implementation simply returns an empty array. You may override this method * if the model needs to be queried with some default criteria (e.g. only active records should be returned). * @return array the query criteria. This will be used as the parameter to the constructor * of {@link CDbCriteria}. */ public function defaultScope() { return array(); } /** * Resets all scopes and criterias applied including default scope. * * @return ActiveRecord */ public function resetScope() { $this->_c = new CDbCriteria(); return $this; } /** * Returns the static model of the specified AR class. * The model returned is a static instance of the AR class. * It is provided for invoking class-level methods (something similar to static class methods.) * * EVERY derived AR class must override this method as follows, *
	 * public static function model($className=__CLASS__)
	 * {
	 *     return parent::model($className);
	 * }
	 * 
* * @param string $className active record class name. * @return ActiveRecord active record model instance. */ public static function model($className = __CLASS__) { if (isset(self::$_models[$className])) return self::$_models[$className]; else { $model = self::$_models[$className] = new $className(null); $model->_md = new ActiveRecordMetaData($model); $model->attachBehaviors($model->behaviors()); return $model; } } /** * Returns the meta-data for this AR * @return ActiveRecordMetaData the meta for this AR class. */ public function getMetaData() { if ($this->_md !== null) return $this->_md; else return $this->_md = self::model(get_class($this))->_md; } /** * Refreshes the meta data for this AR class. * By calling this method, this AR class will regenerate the meta data needed. * This is useful if the table schema has been changed and you want to use the latest * available table schema. Make sure you have called {@link CDbSchema::refresh} * before you call this method. Otherwise, old table schema data will still be used. */ public function refreshMetaData() { $finder = self::model(get_class($this)); $finder->_md = new ActiveRecordMetaData($finder); if ($this !== $finder) $this->_md = $finder->_md; } /** * Returns the name of the associated database table. * By default this method returns the class name as the table name. * You may override this method if the table is not named after this convention. * @return string the table name */ public function tableName() { return get_class($this); } /** * Returns the primary key of the associated database table. * This method is meant to be overridden in case when the table is not defined with a primary key * (for some legency database). If the table is already defined with a primary key, * you do not need to override this method. The default implementation simply returns null, * meaning using the primary key defined in the database. * @return mixed the primary key of the associated database table. * If the key is a single column, it should return the column name; * If the key is a composite one consisting of several columns, it should * return the array of the key column names. */ public function primaryKey() { } /** * This method should be overridden to declare related objects. * * There are four types of relations that may exist between two active record objects: * * * Besides the above relation types, a special relation called STAT is also supported * that can be used to perform statistical query (or aggregational query). * It retrieves the aggregational information about the related objects, such as the number * of comments for each post, the average rating for each product, etc. * * Each kind of related objects is defined in this method as an array with the following elements: *
	 * 'varName'=>array('relationType', 'className', 'foreign_key', ...additional options)
	 * 
* where 'varName' refers to the name of the variable/property that the related object(s) can * be accessed through; 'relationType' refers to the type of the relation, which can be one of the * following four constants: self::BELONGS_TO, self::HAS_ONE, self::HAS_MANY and self::MANY_MANY; * 'className' refers to the name of the active record class that the related object(s) is of; * and 'foreign_key' states the foreign key that relates the two kinds of active record. * Note, for composite foreign keys, they must be listed together, separated by commas; * and for foreign keys used in MANY_MANY relation, the joining table must be declared as well * (e.g. 'join_table(fk1, fk2)'). * * Additional options may be specified as name-value pairs in the rest array elements: * * * The following options are available for certain relations when lazy loading: * * * Below is an example declaring related objects for 'Post' active record class: *
	 * return array(
	 *     'author'=>array(self::BELONGS_TO, 'User', 'author_id'),
	 *     'comments'=>array(self::HAS_MANY, 'Comment', 'post_id', 'with'=>'author', 'order'=>'create_time DESC'),
	 *     'tags'=>array(self::MANY_MANY, 'Tag', 'post_tag(post_id, tag_id)', 'order'=>'name'),
	 * );
	 * 
* * @return array list of related object declarations. Defaults to empty array. */ public function relations() { return array(); } /** * Returns the declaration of named scopes. * A named scope represents a query criteria that can be chained together with * other named scopes and applied to a query. This method should be overridden * by child classes to declare named scopes for the particular AR classes. * For example, the following code declares two named scopes: 'recently' and * 'published'. *
	 * return array(
	 *     'published'=>array(
	 *           'condition'=>'status=1',
	 *     ),
	 *     'recently'=>array(
	 *           'order'=>'create_time DESC',
	 *           'limit'=>5,
	 *     ),
	 * );
	 * 
* If the above scopes are declared in a 'Post' model, we can perform the following * queries: *
	 * $posts=Post::model()->published()->findAll();
	 * $posts=Post::model()->published()->recently()->findAll();
	 * $posts=Post::model()->published()->with('comments')->findAll();
	 * 
* Note that the last query is a relational query. * * @return array the scope definition. The array keys are scope names; the array * values are the corresponding scope definitions. Each scope definition is represented * as an array whose keys must be properties of {@link CDbCriteria}. */ public function scopes() { return array(); } /** * Returns the list of all attribute names of the model. * This would return all column names of the table associated with this AR class. * @return array list of attribute names. */ public function attributeNames() { return array_keys($this->getMetaData()->columns); } /** * Returns the text label for the specified attribute. * This method overrides the parent implementation by supporting * returning the label defined in relational object. * In particular, if the attribute name is in the form of "post.author.name", * then this method will derive the label from the "author" relation's "name" attribute. * @param string $attribute the attribute name * @return string the attribute label * @see generateAttributeLabel */ public function getAttributeLabel($attribute) { $labels = $this->attributeLabels(); if (isset($labels[$attribute])) return $labels[$attribute]; elseif (strpos($attribute, '.') !== false) { $segs = explode('.', $attribute); $name = array_pop($segs); $model = $this; foreach ($segs as $seg) { $relations = $model->getMetaData()->relations; if (isset($relations[$seg])) $model = ActiveRecord::model($relations[$seg]->className); else break; } return $model->getAttributeLabel($name); } else return $this->generateAttributeLabel($attribute); } /** * Returns the database connection used by active record. * By default, the "db" application component is used as the database connection. * You may override this method if you want to use a different database connection. * @return CDbConnection the database connection used by active record. */ public function getDbConnection() { if (self::$db !== null) return self::$db; else { self::$db = \Yii::$application->getDb(); if (self::$db instanceof CDbConnection) return self::$db; else throw new CDbException(Yii::t('yii', 'Active Record requires a "db" CDbConnection application component.')); } } /** * Returns the named relation declared for this AR class. * @param string $name the relation name * @return CActiveRelation the named relation declared for this AR class. Null if the relation does not exist. */ public function getActiveRelation($name) { return isset($this->getMetaData()->relations[$name]) ? $this->getMetaData()->relations[$name] : null; } /** * Returns the metadata of the table that this AR belongs to * @return CDbTableSchema the metadata of the table that this AR belongs to */ public function getTableSchema() { return $this->getMetaData()->tableSchema; } /** * Returns the command builder used by this AR. * @return CDbCommandBuilder the command builder used by this AR */ public function getCommandBuilder() { return $this->getDbConnection()->getSchema()->getCommandBuilder(); } /** * Checks whether this AR has the named attribute * @param string $name attribute name * @return boolean whether this AR has the named attribute (table column). */ public function hasAttribute($name) { return isset($this->getMetaData()->columns[$name]); } /** * Returns the named attribute value. * If this is a new record and the attribute is not set before, * the default column value will be returned. * If this record is the result of a query and the attribute is not loaded, * null will be returned. * You may also use $this->AttributeName to obtain the attribute value. * @param string $name the attribute name * @return mixed the attribute value. Null if the attribute is not set or does not exist. * @see hasAttribute */ public function getAttribute($name) { if (property_exists($this, $name)) return $this->$name; elseif (isset($this->_attributes[$name])) return $this->_attributes[$name]; } /** * Sets the named attribute value. * You may also use $this->AttributeName to set the attribute value. * @param string $name the attribute name * @param mixed $value the attribute value. * @return boolean whether the attribute exists and the assignment is conducted successfully * @see hasAttribute */ public function setAttribute($name, $value) { if (property_exists($this, $name)) $this->$name = $value; elseif (isset($this->getMetaData()->columns[$name])) $this->_attributes[$name] = $value; else return false; return true; } /** * Do not call this method. This method is used internally by {@link CActiveFinder} to populate * related objects. This method adds a related object to this record. * @param string $name attribute name * @param mixed $record the related record * @param mixed $index the index value in the related object collection. * If true, it means using zero-based integer index. * If false, it means a HAS_ONE or BELONGS_TO object and no index is needed. */ public function addRelatedRecord($name, $record, $index) { if ($index !== false) { if (!isset($this->_related[$name])) $this->_related[$name] = array(); if ($record instanceof ActiveRecord) { if ($index === true) $this->_related[$name][] = $record; else $this->_related[$name][$index] = $record; } } elseif (!isset($this->_related[$name])) $this->_related[$name] = $record; } /** * Returns all column attribute values. * Note, related objects are not returned. * @param mixed $names names of attributes whose value needs to be returned. * If this is true (default), then all attribute values will be returned, including * those that are not loaded from DB (null will be returned for those attributes). * If this is null, all attributes except those that are not loaded from DB will be returned. * @return array attribute values indexed by attribute names. */ public function getAttributes($names = true) { $attributes = $this->_attributes; foreach ($this->getMetaData()->columns as $name => $column) { if (property_exists($this, $name)) $attributes[$name] = $this->$name; elseif ($names === true && !isset($attributes[$name])) $attributes[$name] = null; } if (is_array($names)) { $attrs = array(); foreach ($names as $name) { if (property_exists($this, $name)) $attrs[$name] = $this->$name; else $attrs[$name] = isset($attributes[$name]) ? $attributes[$name] : null; } return $attrs; } else return $attributes; } /** * Saves the current record. * * The record is inserted as a row into the database table if its {@link isNewRecord} * property is true (usually the case when the record is created using the 'new' * operator). Otherwise, it will be used to update the corresponding row in the table * (usually the case if the record is obtained using one of those 'find' methods.) * * Validation will be performed before saving the record. If the validation fails, * the record will not be saved. You can call {@link getErrors()} to retrieve the * validation errors. * * If the record is saved via insertion, its {@link isNewRecord} property will be * set false, and its {@link scenario} property will be set to be 'update'. * And if its primary key is auto-incremental and is not set before insertion, * the primary key will be populated with the automatically generated key value. * * @param boolean $runValidation whether to perform validation before saving the record. * If the validation fails, the record will not be saved to database. * @param array $attributes list of attributes that need to be saved. Defaults to null, * meaning all attributes that are loaded from DB will be saved. * @return boolean whether the saving succeeds */ public function save($runValidation = true, $attributes = null) { if (!$runValidation || $this->validate($attributes)) return $this->getIsNewRecord() ? $this->insert($attributes) : $this->update($attributes); else return false; } /** * Returns if the current record is new. * @return boolean whether the record is new and should be inserted when calling {@link save}. * This property is automatically set in constructor and {@link populateRecord}. * Defaults to false, but it will be set to true if the instance is created using * the new operator. */ public function getIsNewRecord() { return $this->_new; } /** * Sets if the record is new. * @param boolean $value whether the record is new and should be inserted when calling {@link save}. * @see getIsNewRecord */ public function setIsNewRecord($value) { $this->_new = $value; } /** * This event is raised before the record is saved. * By setting {@link CModelEvent::isValid} to be false, the normal {@link save()} process will be stopped. * @param CModelEvent $event the event parameter */ public function onBeforeSave($event) { $this->raiseEvent('onBeforeSave', $event); } /** * This event is raised after the record is saved. * @param CEvent $event the event parameter */ public function onAfterSave($event) { $this->raiseEvent('onAfterSave', $event); } /** * This event is raised before the record is deleted. * By setting {@link CModelEvent::isValid} to be false, the normal {@link delete()} process will be stopped. * @param CModelEvent $event the event parameter */ public function onBeforeDelete($event) { $this->raiseEvent('onBeforeDelete', $event); } /** * This event is raised after the record is deleted. * @param CEvent $event the event parameter */ public function onAfterDelete($event) { $this->raiseEvent('onAfterDelete', $event); } /** * This event is raised before an AR finder performs a find call. * In this event, the {@link CModelEvent::criteria} property contains the query criteria * passed as parameters to those find methods. If you want to access * the query criteria specified in scopes, please use {@link getDbCriteria()}. * You can modify either criteria to customize them based on needs. * @param CModelEvent $event the event parameter * @see beforeFind */ public function onBeforeFind($event) { $this->raiseEvent('onBeforeFind', $event); } /** * This event is raised after the record is instantiated by a find method. * @param CEvent $event the event parameter */ public function onAfterFind($event) { $this->raiseEvent('onAfterFind', $event); } /** * This method is invoked before saving a record (after validation, if any). * The default implementation raises the {@link onBeforeSave} event. * You may override this method to do any preparation work for record saving. * Use {@link isNewRecord} to determine whether the saving is * for inserting or updating record. * Make sure you call the parent implementation so that the event is raised properly. * @return boolean whether the saving should be executed. Defaults to true. */ protected function beforeSave() { if ($this->hasEventHandler('onBeforeSave')) { $event = new CModelEvent($this); $this->onBeforeSave($event); return $event->isValid; } else return true; } /** * This method is invoked after saving a record successfully. * The default implementation raises the {@link onAfterSave} event. * You may override this method to do postprocessing after record saving. * Make sure you call the parent implementation so that the event is raised properly. */ protected function afterSave() { if ($this->hasEventHandler('onAfterSave')) $this->onAfterSave(new CEvent($this)); } /** * This method is invoked before deleting a record. * The default implementation raises the {@link onBeforeDelete} event. * You may override this method to do any preparation work for record deletion. * Make sure you call the parent implementation so that the event is raised properly. * @return boolean whether the record should be deleted. Defaults to true. */ protected function beforeDelete() { if ($this->hasEventHandler('onBeforeDelete')) { $event = new CModelEvent($this); $this->onBeforeDelete($event); return $event->isValid; } else return true; } /** * This method is invoked after deleting a record. * The default implementation raises the {@link onAfterDelete} event. * You may override this method to do postprocessing after the record is deleted. * Make sure you call the parent implementation so that the event is raised properly. */ protected function afterDelete() { if ($this->hasEventHandler('onAfterDelete')) $this->onAfterDelete(new CEvent($this)); } /** * This method is invoked before an AR finder executes a find call. * The find calls include {@link find}, {@link findAll}, {@link findByPk}, * {@link findAllByPk}, {@link findByAttributes} and {@link findAllByAttributes}. * The default implementation raises the {@link onBeforeFind} event. * If you override this method, make sure you call the parent implementation * so that the event is raised properly. * * Starting from version 1.1.5, this method may be called with a hidden {@link CDbCriteria} * parameter which represents the current query criteria as passed to a find method of AR. */ protected function beforeFind() { if ($this->hasEventHandler('onBeforeFind')) { $event = new CModelEvent($this); // for backward compatibility $event->criteria = func_num_args() > 0 ? func_get_arg(0) : null; $this->onBeforeFind($event); } } /** * This method is invoked after each record is instantiated by a find method. * The default implementation raises the {@link onAfterFind} event. * You may override this method to do postprocessing after each newly found record is instantiated. * Make sure you call the parent implementation so that the event is raised properly. */ protected function afterFind() { if ($this->hasEventHandler('onAfterFind')) $this->onAfterFind(new CEvent($this)); } /** * Calls {@link beforeFind}. * This method is internally used. */ public function beforeFindInternal() { $this->beforeFind(); } /** * Calls {@link afterFind}. * This method is internally used. */ public function afterFindInternal() { $this->afterFind(); } /** * Inserts a row into the table based on this active record attributes. * If the table's primary key is auto-incremental and is null before insertion, * it will be populated with the actual value after insertion. * Note, validation is not performed in this method. You may call {@link validate} to perform the validation. * After the record is inserted to DB successfully, its {@link isNewRecord} property will be set false, * and its {@link scenario} property will be set to be 'update'. * @param array $attributes list of attributes that need to be saved. Defaults to null, * meaning all attributes that are loaded from DB will be saved. * @return boolean whether the attributes are valid and the record is inserted successfully. * @throws CException if the record is not new */ public function insert($attributes = null) { if (!$this->getIsNewRecord()) throw new CDbException(Yii::t('yii', 'The active record cannot be inserted to database because it is not new.')); if ($this->beforeSave()) { Yii::trace(get_class($this) . '.insert()', 'system.db.ar.ActiveRecord'); $builder = $this->getCommandBuilder(); $table = $this->getMetaData()->tableSchema; $command = $builder->createInsertCommand($table, $this->getAttributes($attributes)); if ($command->execute()) { $primaryKey = $table->primaryKey; if ($table->sequenceName !== null) { if (is_string($primaryKey) && $this->$primaryKey === null) $this->$primaryKey = $builder->getLastInsertID($table); elseif (is_array($primaryKey)) { foreach ($primaryKey as $pk) { if ($this->$pk === null) { $this->$pk = $builder->getLastInsertID($table); break; } } } } $this->_pk = $this->getPrimaryKey(); $this->afterSave(); $this->setIsNewRecord(false); $this->setScenario('update'); return true; } } return false; } /** * Updates the row represented by this active record. * All loaded attributes will be saved to the database. * Note, validation is not performed in this method. You may call {@link validate} to perform the validation. * @param array $attributes list of attributes that need to be saved. Defaults to null, * meaning all attributes that are loaded from DB will be saved. * @return boolean whether the update is successful * @throws CException if the record is new */ public function update($attributes = null) { if ($this->getIsNewRecord()) throw new CDbException(Yii::t('yii', 'The active record cannot be updated because it is new.')); if ($this->beforeSave()) { Yii::trace(get_class($this) . '.update()', 'system.db.ar.ActiveRecord'); if ($this->_pk === null) $this->_pk = $this->getPrimaryKey(); $this->updateByPk($this->getOldPrimaryKey(), $this->getAttributes($attributes)); $this->_pk = $this->getPrimaryKey(); $this->afterSave(); return true; } else return false; } /** * Saves a selected list of attributes. * Unlike {@link save}, this method only saves the specified attributes * of an existing row dataset and does NOT call either {@link beforeSave} or {@link afterSave}. * Also note that this method does neither attribute filtering nor validation. * So do not use this method with untrusted data (such as user posted data). * You may consider the following alternative if you want to do so: *
	 * $postRecord=Post::model()->findByPk($postID);
	 * $postRecord->attributes=$_POST['post'];
	 * $postRecord->save();
	 * 
* @param array $attributes attributes to be updated. Each element represents an attribute name * or an attribute value indexed by its name. If the latter, the record's * attribute will be changed accordingly before saving. * @return boolean whether the update is successful * @throws CException if the record is new or any database error */ public function saveAttributes($attributes) { if (!$this->getIsNewRecord()) { Yii::trace(get_class($this) . '.saveAttributes()', 'system.db.ar.ActiveRecord'); $values = array(); foreach ($attributes as $name => $value) { if (is_integer($name)) $values[$value] = $this->$value; else $values[$name] = $this->$name = $value; } if ($this->_pk === null) $this->_pk = $this->getPrimaryKey(); if ($this->updateByPk($this->getOldPrimaryKey(), $values) > 0) { $this->_pk = $this->getPrimaryKey(); return true; } else return false; } else throw new CDbException(Yii::t('yii', 'The active record cannot be updated because it is new.')); } /** * Saves one or several counter columns for the current AR object. * Note that this method differs from {@link updateCounters} in that it only * saves the current AR object. * An example usage is as follows: *
	 * $postRecord=Post::model()->findByPk($postID);
	 * $postRecord->saveCounters(array('view_count'=>1));
	 * 
* Use negative values if you want to decrease the counters. * @param array $counters the counters to be updated (column name=>increment value) * @return boolean whether the saving is successful * @see updateCounters */ public function saveCounters($counters) { Yii::trace(get_class($this) . '.saveCounters()', 'system.db.ar.ActiveRecord'); $builder = $this->getCommandBuilder(); $table = $this->getTableSchema(); $criteria = $builder->createPkCriteria($table, $this->getOldPrimaryKey()); $command = $builder->createUpdateCounterCommand($this->getTableSchema(), $counters, $criteria); if ($command->execute()) { foreach ($counters as $name => $value) $this->$name = $this->$name + $value; return true; } else return false; } /** * Deletes the row corresponding to this active record. * @return boolean whether the deletion is successful. * @throws CException if the record is new */ public function delete() { if (!$this->getIsNewRecord()) { Yii::trace(get_class($this) . '.delete()', 'system.db.ar.ActiveRecord'); if ($this->beforeDelete()) { $result = $this->deleteByPk($this->getPrimaryKey()) > 0; $this->afterDelete(); return $result; } else return false; } else throw new CDbException(Yii::t('yii', 'The active record cannot be deleted because it is new.')); } /** * Repopulates this active record with the latest data. * @return boolean whether the row still exists in the database. If true, the latest data will be populated to this active record. */ public function refresh() { Yii::trace(get_class($this) . '.refresh()', 'system.db.ar.ActiveRecord'); if (!$this->getIsNewRecord() && ($record = $this->findByPk($this->getPrimaryKey())) !== null) { $this->_attributes = array(); $this->_related = array(); foreach ($this->getMetaData()->columns as $name => $column) { if (property_exists($this, $name)) $this->$name = $record->$name; else $this->_attributes[$name] = $record->$name; } return true; } else return false; } /** * Compares current active record with another one. * The comparison is made by comparing table name and the primary key values of the two active records. * @param ActiveRecord $record record to compare to * @return boolean whether the two active records refer to the same row in the database table. */ public function equals($record) { return $this->tableName() === $record->tableName() && $this->getPrimaryKey() === $record->getPrimaryKey(); } /** * Returns the primary key value. * @return mixed the primary key value. An array (column name=>column value) is returned if the primary key is composite. * If primary key is not defined, null will be returned. */ public function getPrimaryKey() { $table = $this->getMetaData()->tableSchema; if (is_string($table->primaryKey)) return $this-> {$table->primaryKey}; elseif (is_array($table->primaryKey)) { $values = array(); foreach ($table->primaryKey as $name) $values[$name] = $this->$name; return $values; } else return null; } /** * Sets the primary key value. * After calling this method, the old primary key value can be obtained from {@link oldPrimaryKey}. * @param mixed $value the new primary key value. If the primary key is composite, the new value * should be provided as an array (column name=>column value). */ public function setPrimaryKey($value) { $this->_pk = $this->getPrimaryKey(); $table = $this->getMetaData()->tableSchema; if (is_string($table->primaryKey)) $this-> {$table->primaryKey} = $value; elseif (is_array($table->primaryKey)) { foreach ($table->primaryKey as $name) $this->$name = $value[$name]; } } /** * Returns the old primary key value. * This refers to the primary key value that is populated into the record * after executing a find method (e.g. find(), findAll()). * The value remains unchanged even if the primary key attribute is manually assigned with a different value. * @return mixed the old primary key value. An array (column name=>column value) is returned if the primary key is composite. * If primary key is not defined, null will be returned. */ public function getOldPrimaryKey() { return $this->_pk; } /** * Sets the old primary key value. * @param mixed $value the old primary key value. */ public function setOldPrimaryKey($value) { $this->_pk = $value; } /** * Performs the actual DB query and populates the AR objects with the query result. * This method is mainly internally used by other AR query methods. * @param CDbCriteria $criteria the query criteria * @param boolean $all whether to return all data * @return mixed the AR objects populated with the query result */ protected function query($criteria, $all = false) { $this->beforeFind(); $this->applyScopes($criteria); if (empty($criteria->with)) { if (!$all) $criteria->limit = 1; $command = $this->getCommandBuilder()->createFindCommand($this->getTableSchema(), $criteria); return $all ? $this->populateRecords($command->queryAll(), true, $criteria->index) : $this->populateRecord($command->queryRow()); } else { $finder = new CActiveFinder($this, $criteria->with); return $finder->query($criteria, $all); } } /** * Applies the query scopes to the given criteria. * This method merges {@link dbCriteria} with the given criteria parameter. * It then resets {@link dbCriteria} to be null. * @param CDbCriteria $criteria the query criteria. This parameter may be modified by merging {@link dbCriteria}. */ public function applyScopes(&$criteria) { if (!empty($criteria->scopes)) { $scs = $this->scopes(); $c = $this->getDbCriteria(); foreach ((array)$criteria->scopes as $k => $v) { if (is_integer($k)) { if (is_string($v)) { if (isset($scs[$v])) { $c->mergeWith($scs[$v], true); continue; } $scope = $v; $params = array(); } elseif (is_array($v)) { $scope = key($v); $params = current($v); } } elseif (is_string($k)) { $scope = $k; $params = $v; } call_user_func_array(array($this, $scope), (array)$params); } } if (isset($c) || ($c = $this->getDbCriteria(false)) !== null) { $c->mergeWith($criteria); $criteria = $c; $this->_c = null; } } /** * Returns the table alias to be used by the find methods. * In relational queries, the returned table alias may vary according to * the corresponding relation declaration. Also, the default table alias * set by {@link setTableAlias} may be overridden by the applied scopes. * @param boolean $quote whether to quote the alias name * @param boolean $checkScopes whether to check if a table alias is defined in the applied scopes so far. * This parameter must be set false when calling this method in {@link defaultScope}. * An infinite loop would be formed otherwise. * @return string the default table alias */ public function getTableAlias($quote = false, $checkScopes = true) { if ($checkScopes && ($criteria = $this->getDbCriteria(false)) !== null && $criteria->alias != '') $alias = $criteria->alias; else $alias = $this->_alias; return $quote ? $this->getDbConnection()->getSchema()->quoteTableName($alias) : $alias; } /** * Sets the table alias to be used in queries. * @param string $alias the table alias to be used in queries. The alias should NOT be quoted. */ public function setTableAlias($alias) { $this->_alias = $alias; } /** * Finds a single active record with the specified condition. * @param mixed $condition query condition or criteria. * If a string, it is treated as query condition (the WHERE clause); * If an array, it is treated as the initial values for constructing a {@link CDbCriteria} object; * Otherwise, it should be an instance of {@link CDbCriteria}. * @param array $params parameters to be bound to an SQL statement. * This is only used when the first parameter is a string (query condition). * In other cases, please use {@link CDbCriteria::params} to set parameters. * @return ActiveRecord the record found. Null if no record is found. */ public function find($condition = '', $params = array()) { Yii::trace(get_class($this) . '.find()', 'system.db.ar.ActiveRecord'); $criteria = $this->getCommandBuilder()->createCriteria($condition, $params); return $this->query($criteria); } /** * Finds all active records satisfying the specified condition. * See {@link find()} for detailed explanation about $condition and $params. * @param mixed $condition query condition or criteria. * @param array $params parameters to be bound to an SQL statement. * @return array list of active records satisfying the specified condition. An empty array is returned if none is found. */ public function findAll($condition = '', $params = array()) { Yii::trace(get_class($this) . '.findAll()', 'system.db.ar.ActiveRecord'); $criteria = $this->getCommandBuilder()->createCriteria($condition, $params); return $this->query($criteria, true); } /** * Finds a single active record with the specified primary key. * See {@link find()} for detailed explanation about $condition and $params. * @param mixed $pk primary key value(s). Use array for multiple primary keys. For composite key, each key value must be an array (column name=>column value). * @param mixed $condition query condition or criteria. * @param array $params parameters to be bound to an SQL statement. * @return ActiveRecord the record found. Null if none is found. */ public function findByPk($pk, $condition = '', $params = array()) { Yii::trace(get_class($this) . '.findByPk()', 'system.db.ar.ActiveRecord'); $prefix = $this->getTableAlias(true) . '.'; $criteria = $this->getCommandBuilder()->createPkCriteria($this->getTableSchema(), $pk, $condition, $params, $prefix); return $this->query($criteria); } /** * Finds all active records with the specified primary keys. * See {@link find()} for detailed explanation about $condition and $params. * @param mixed $pk primary key value(s). Use array for multiple primary keys. For composite key, each key value must be an array (column name=>column value). * @param mixed $condition query condition or criteria. * @param array $params parameters to be bound to an SQL statement. * @return array the records found. An empty array is returned if none is found. */ public function findAllByPk($pk, $condition = '', $params = array()) { Yii::trace(get_class($this) . '.findAllByPk()', 'system.db.ar.ActiveRecord'); $prefix = $this->getTableAlias(true) . '.'; $criteria = $this->getCommandBuilder()->createPkCriteria($this->getTableSchema(), $pk, $condition, $params, $prefix); return $this->query($criteria, true); } /** * Finds a single active record that has the specified attribute values. * See {@link find()} for detailed explanation about $condition and $params. * @param array $attributes list of attribute values (indexed by attribute names) that the active records should match. * Since version 1.0.8, an attribute value can be an array which will be used to generate an IN condition. * @param mixed $condition query condition or criteria. * @param array $params parameters to be bound to an SQL statement. * @return ActiveRecord the record found. Null if none is found. */ public function findByAttributes($attributes, $condition = '', $params = array()) { Yii::trace(get_class($this) . '.findByAttributes()', 'system.db.ar.ActiveRecord'); $prefix = $this->getTableAlias(true) . '.'; $criteria = $this->getCommandBuilder()->createColumnCriteria($this->getTableSchema(), $attributes, $condition, $params, $prefix); return $this->query($criteria); } /** * Finds all active records that have the specified attribute values. * See {@link find()} for detailed explanation about $condition and $params. * @param array $attributes list of attribute values (indexed by attribute names) that the active records should match. * Since version 1.0.8, an attribute value can be an array which will be used to generate an IN condition. * @param mixed $condition query condition or criteria. * @param array $params parameters to be bound to an SQL statement. * @return array the records found. An empty array is returned if none is found. */ public function findAllByAttributes($attributes, $condition = '', $params = array()) { Yii::trace(get_class($this) . '.findAllByAttributes()', 'system.db.ar.ActiveRecord'); $prefix = $this->getTableAlias(true) . '.'; $criteria = $this->getCommandBuilder()->createColumnCriteria($this->getTableSchema(), $attributes, $condition, $params, $prefix); return $this->query($criteria, true); } /** * Finds a single active record with the specified SQL statement. * @param string $sql the SQL statement * @param array $params parameters to be bound to the SQL statement * @return ActiveRecord the record found. Null if none is found. */ public function findBySql($sql, $params = array()) { Yii::trace(get_class($this) . '.findBySql()', 'system.db.ar.ActiveRecord'); $this->beforeFind(); if (($criteria = $this->getDbCriteria(false)) !== null && !empty($criteria->with)) { $this->_c = null; $finder = new CActiveFinder($this, $criteria->with); return $finder->findBySql($sql, $params); } else { $command = $this->getCommandBuilder()->createSqlCommand($sql, $params); return $this->populateRecord($command->queryRow()); } } /** * Finds all active records using the specified SQL statement. * @param string $sql the SQL statement * @param array $params parameters to be bound to the SQL statement * @return array the records found. An empty array is returned if none is found. */ public function findAllBySql($sql, $params = array()) { Yii::trace(get_class($this) . '.findAllBySql()', 'system.db.ar.ActiveRecord'); $this->beforeFind(); if (($criteria = $this->getDbCriteria(false)) !== null && !empty($criteria->with)) { $this->_c = null; $finder = new CActiveFinder($this, $criteria->with); return $finder->findAllBySql($sql, $params); } else { $command = $this->getCommandBuilder()->createSqlCommand($sql, $params); return $this->populateRecords($command->queryAll()); } } /** * Finds the number of rows satisfying the specified query condition. * See {@link find()} for detailed explanation about $condition and $params. * @param mixed $condition query condition or criteria. * @param array $params parameters to be bound to an SQL statement. * @return string the number of rows satisfying the specified query condition. Note: type is string to keep max. precision. */ public function count($condition = '', $params = array()) { Yii::trace(get_class($this) . '.count()', 'system.db.ar.ActiveRecord'); $builder = $this->getCommandBuilder(); $criteria = $builder->createCriteria($condition, $params); $this->applyScopes($criteria); if (empty($criteria->with)) return $builder->createCountCommand($this->getTableSchema(), $criteria)->queryScalar(); else { $finder = new CActiveFinder($this, $criteria->with); return $finder->count($criteria); } } /** * Finds the number of rows that have the specified attribute values. * See {@link find()} for detailed explanation about $condition and $params. * @param array $attributes list of attribute values (indexed by attribute names) that the active records should match. * An attribute value can be an array which will be used to generate an IN condition. * @param mixed $condition query condition or criteria. * @param array $params parameters to be bound to an SQL statement. * @return string the number of rows satisfying the specified query condition. Note: type is string to keep max. precision. */ public function countByAttributes($attributes, $condition = '', $params = array()) { Yii::trace(get_class($this) . '.countByAttributes()', 'system.db.ar.ActiveRecord'); $prefix = $this->getTableAlias(true) . '.'; $builder = $this->getCommandBuilder(); $criteria = $builder->createColumnCriteria($this->getTableSchema(), $attributes, $condition, $params, $prefix); $this->applyScopes($criteria); if (empty($criteria->with)) return $builder->createCountCommand($this->getTableSchema(), $criteria)->queryScalar(); else { $finder = new CActiveFinder($this, $criteria->with); return $finder->count($criteria); } } /** * Finds the number of rows using the given SQL statement. * This is equivalent to calling {@link CDbCommand::queryScalar} with the specified * SQL statement and the parameters. * @param string $sql the SQL statement * @param array $params parameters to be bound to the SQL statement * @return string the number of rows using the given SQL statement. Note: type is string to keep max. precision. */ public function countBySql($sql, $params = array()) { Yii::trace(get_class($this) . '.countBySql()', 'system.db.ar.ActiveRecord'); return $this->getCommandBuilder()->createSqlCommand($sql, $params)->queryScalar(); } /** * Checks whether there is row satisfying the specified condition. * See {@link find()} for detailed explanation about $condition and $params. * @param mixed $condition query condition or criteria. * @param array $params parameters to be bound to an SQL statement. * @return boolean whether there is row satisfying the specified condition. */ public function exists($condition = '', $params = array()) { Yii::trace(get_class($this) . '.exists()', 'system.db.ar.ActiveRecord'); $builder = $this->getCommandBuilder(); $criteria = $builder->createCriteria($condition, $params); $table = $this->getTableSchema(); $criteria->select = '1'; $criteria->limit = 1; $this->applyScopes($criteria); if (empty($criteria->with)) return $builder->createFindCommand($table, $criteria)->queryRow() !== false; else { $criteria->select = '*'; $finder = new CActiveFinder($this, $criteria->with); return $finder->count($criteria) > 0; } } /** * Specifies which related objects should be eagerly loaded. * This method takes variable number of parameters. Each parameter specifies * the name of a relation or child-relation. For example, *
	 * // find all posts together with their author and comments
	 * Post::model()->with('author','comments')->findAll();
	 * // find all posts together with their author and the author's profile
	 * Post::model()->with('author','author.profile')->findAll();
	 * 
* The relations should be declared in {@link relations()}. * * By default, the options specified in {@link relations()} will be used * to do relational query. In order to customize the options on the fly, * we should pass an array parameter to the with() method. The array keys * are relation names, and the array values are the corresponding query options. * For example, *
	 * Post::model()->with(array(
	 *     'author'=>array('select'=>'id, name'),
	 *     'comments'=>array('condition'=>'approved=1', 'order'=>'create_time'),
	 * ))->findAll();
	 * 
* * Note, the possible parameters to this method have been changed since version 1.0.2. * Previously, it was not possible to specify on-th-fly query options, * and child-relations were specified as hierarchical arrays. * * @return ActiveRecord the AR object itself. */ public function with() { if (func_num_args() > 0) { $with = func_get_args(); if (is_array($with[0])) // the parameter is given as an array $with = $with[0]; if (!empty($with)) $this->getDbCriteria()->mergeWith(array('with' => $with)); } return $this; } /** * Sets {@link CDbCriteria::together} property to be true. * This is only used in relational AR query. Please refer to {@link CDbCriteria::together} * for more details. * @return ActiveRecord the AR object itself */ public function together() { $this->getDbCriteria()->together = true; return $this; } /** * Updates records with the specified primary key(s). * See {@link find()} for detailed explanation about $condition and $params. * Note, the attributes are not checked for safety and validation is NOT performed. * @param mixed $pk primary key value(s). Use array for multiple primary keys. For composite key, each key value must be an array (column name=>column value). * @param array $attributes list of attributes (name=>$value) to be updated * @param mixed $condition query condition or criteria. * @param array $params parameters to be bound to an SQL statement. * @return integer the number of rows being updated */ public function updateByPk($pk, $attributes, $condition = '', $params = array()) { Yii::trace(get_class($this) . '.updateByPk()', 'system.db.ar.ActiveRecord'); $builder = $this->getCommandBuilder(); $table = $this->getTableSchema(); $criteria = $builder->createPkCriteria($table, $pk, $condition, $params); $command = $builder->createUpdateCommand($table, $attributes, $criteria); return $command->execute(); } /** * Updates records with the specified condition. * See {@link find()} for detailed explanation about $condition and $params. * Note, the attributes are not checked for safety and no validation is done. * @param array $attributes list of attributes (name=>$value) to be updated * @param mixed $condition query condition or criteria. * @param array $params parameters to be bound to an SQL statement. * @return integer the number of rows being updated */ public function updateAll($attributes, $condition = '', $params = array()) { Yii::trace(get_class($this) . '.updateAll()', 'system.db.ar.ActiveRecord'); $builder = $this->getCommandBuilder(); $criteria = $builder->createCriteria($condition, $params); $command = $builder->createUpdateCommand($this->getTableSchema(), $attributes, $criteria); return $command->execute(); } /** * Updates one or several counter columns. * Note, this updates all rows of data unless a condition or criteria is specified. * See {@link find()} for detailed explanation about $condition and $params. * @param array $counters the counters to be updated (column name=>increment value) * @param mixed $condition query condition or criteria. * @param array $params parameters to be bound to an SQL statement. * @return integer the number of rows being updated * @see saveCounters */ public function updateCounters($counters, $condition = '', $params = array()) { Yii::trace(get_class($this) . '.updateCounters()', 'system.db.ar.ActiveRecord'); $builder = $this->getCommandBuilder(); $criteria = $builder->createCriteria($condition, $params); $command = $builder->createUpdateCounterCommand($this->getTableSchema(), $counters, $criteria); return $command->execute(); } /** * Deletes rows with the specified primary key. * See {@link find()} for detailed explanation about $condition and $params. * @param mixed $pk primary key value(s). Use array for multiple primary keys. For composite key, each key value must be an array (column name=>column value). * @param mixed $condition query condition or criteria. * @param array $params parameters to be bound to an SQL statement. * @return integer the number of rows deleted */ public function deleteByPk($pk, $condition = '', $params = array()) { Yii::trace(get_class($this) . '.deleteByPk()', 'system.db.ar.ActiveRecord'); $builder = $this->getCommandBuilder(); $criteria = $builder->createPkCriteria($this->getTableSchema(), $pk, $condition, $params); $command = $builder->createDeleteCommand($this->getTableSchema(), $criteria); return $command->execute(); } /** * Deletes rows with the specified condition. * See {@link find()} for detailed explanation about $condition and $params. * @param mixed $condition query condition or criteria. * @param array $params parameters to be bound to an SQL statement. * @return integer the number of rows deleted */ public function deleteAll($condition = '', $params = array()) { Yii::trace(get_class($this) . '.deleteAll()', 'system.db.ar.ActiveRecord'); $builder = $this->getCommandBuilder(); $criteria = $builder->createCriteria($condition, $params); $command = $builder->createDeleteCommand($this->getTableSchema(), $criteria); return $command->execute(); } /** * Deletes rows which match the specified attribute values. * See {@link find()} for detailed explanation about $condition and $params. * @param array $attributes list of attribute values (indexed by attribute names) that the active records should match. * Since version 1.0.8, an attribute value can be an array which will be used to generate an IN condition. * @param mixed $condition query condition or criteria. * @param array $params parameters to be bound to an SQL statement. * @return integer number of rows affected by the execution. */ public function deleteAllByAttributes($attributes, $condition = '', $params = array()) { Yii::trace(get_class($this) . '.deleteAllByAttributes()', 'system.db.ar.ActiveRecord'); $builder = $this->getCommandBuilder(); $table = $this->getTableSchema(); $criteria = $builder->createColumnCriteria($table, $attributes, $condition, $params); $command = $builder->createDeleteCommand($table, $criteria); return $command->execute(); } /** * Creates an active record with the given attributes. * This method is internally used by the find methods. * @param array $attributes attribute values (column name=>column value) * @param boolean $callAfterFind whether to call {@link afterFind} after the record is populated. * This parameter is added in version 1.0.3. * @return ActiveRecord the newly created active record. The class of the object is the same as the model class. * Null is returned if the input data is false. */ public function populateRecord($attributes, $callAfterFind = true) { if ($attributes !== false) { $record = $this->instantiate($attributes); $record->setScenario('update'); $record->init(); $md = $record->getMetaData(); foreach ($attributes as $name => $value) { if (property_exists($record, $name)) $record->$name = $value; elseif (isset($md->columns[$name])) $record->_attributes[$name] = $value; } $record->_pk = $record->getPrimaryKey(); $record->attachBehaviors($record->behaviors()); if ($callAfterFind) $record->afterFind(); return $record; } else return null; } /** * Creates a list of active records based on the input data. * This method is internally used by the find methods. * @param array $data list of attribute values for the active records. * @param boolean $callAfterFind whether to call {@link afterFind} after each record is populated. * This parameter is added in version 1.0.3. * @param string $index the name of the attribute whose value will be used as indexes of the query result array. * If null, it means the array will be indexed by zero-based integers. * @return array list of active records. */ public function populateRecords($data, $callAfterFind = true, $index = null) { $records = array(); foreach ($data as $attributes) { if (($record = $this->populateRecord($attributes, $callAfterFind)) !== null) { if ($index === null) $records[] = $record; else $records[$record->$index] = $record; } } return $records; } /** * Creates an active record instance. * This method is called by {@link populateRecord} and {@link populateRecords}. * You may override this method if the instance being created * depends the attributes that are to be populated to the record. * For example, by creating a record based on the value of a column, * you may implement the so-called single-table inheritance mapping. * @param array $attributes list of attribute values for the active records. * @return ActiveRecord the active record */ protected function instantiate($attributes) { $class = get_class($this); $model = new $class(null); return $model; } /** * Returns whether there is an element at the specified offset. * This method is required by the interface ArrayAccess. * @param mixed $offset the offset to check on * @return boolean */ public function offsetExists($offset) { return $this->__isset($offset); } } /** * CBaseActiveRelation is the base class for all active relations. * @author Qiang Xue */ class CBaseActiveRelation extends CComponent { /** * @var string name of the related object */ public $name; /** * @var string name of the related active record class */ public $className; /** * @var string the foreign key in this relation */ public $foreignKey; /** * @var mixed list of column names (an array, or a string of names separated by commas) to be selected. * Do not quote or prefix the column names unless they are used in an expression. * In that case, you should prefix the column names with 'relationName.'. */ public $select = '*'; /** * @var string WHERE clause. For {@link CActiveRelation} descendant classes, column names * referenced in the condition should be disambiguated with prefix 'relationName.'. */ public $condition = ''; /** * @var array the parameters that are to be bound to the condition. * The keys are parameter placeholder names, and the values are parameter values. */ public $params = array(); /** * @var string GROUP BY clause. For {@link CActiveRelation} descendant classes, column names * referenced in this property should be disambiguated with prefix 'relationName.'. */ public $group = ''; /** * @var string how to join with other tables. This refers to the JOIN clause in an SQL statement. * For example, 'LEFT JOIN users ON users.id=authorID'. */ public $join = ''; /** * @var string HAVING clause. For {@link CActiveRelation} descendant classes, column names * referenced in this property should be disambiguated with prefix 'relationName.'. */ public $having = ''; /** * @var string ORDER BY clause. For {@link CActiveRelation} descendant classes, column names * referenced in this property should be disambiguated with prefix 'relationName.'. */ public $order = ''; /** * Constructor. * @param string $name name of the relation * @param string $className name of the related active record class * @param string $foreignKey foreign key for this relation * @param array $options additional options (name=>value). The keys must be the property names of this class. */ public function __construct($name, $className, $foreignKey, $options = array()) { $this->name = $name; $this->className = $className; $this->foreignKey = $foreignKey; foreach ($options as $name => $value) $this->$name = $value; } /** * Merges this relation with a criteria specified dynamically. * @param array $criteria the dynamically specified criteria * @param boolean $fromScope whether the criteria to be merged is from scopes */ public function mergeWith($criteria, $fromScope = false) { if ($criteria instanceof CDbCriteria) $criteria = $criteria->toArray(); if (isset($criteria['select']) && $this->select !== $criteria['select']) { if ($this->select === '*') $this->select = $criteria['select']; elseif ($criteria['select'] !== '*') { $select1 = is_string($this->select) ? preg_split('/\s*,\s*/', trim($this->select), -1, PREG_SPLIT_NO_EMPTY) : $this->select; $select2 = is_string($criteria['select']) ? preg_split('/\s*,\s*/', trim($criteria['select']), -1, PREG_SPLIT_NO_EMPTY) : $criteria['select']; $this->select = array_merge($select1, array_diff($select2, $select1)); } } if (isset($criteria['condition']) && $this->condition !== $criteria['condition']) { if ($this->condition === '') $this->condition = $criteria['condition']; elseif ($criteria['condition'] !== '') $this->condition = "( {$this->condition}) AND ( {$criteria['condition']})"; } if (isset($criteria['params']) && $this->params !== $criteria['params']) $this->params = array_merge($this->params, $criteria['params']); if (isset($criteria['order']) && $this->order !== $criteria['order']) { if ($this->order === '') $this->order = $criteria['order']; elseif ($criteria['order'] !== '') $this->order = $criteria['order'] . ', ' . $this->order; } if (isset($criteria['group']) && $this->group !== $criteria['group']) { if ($this->group === '') $this->group = $criteria['group']; elseif ($criteria['group'] !== '') $this->group .= ', ' . $criteria['group']; } if (isset($criteria['join']) && $this->join !== $criteria['join']) { if ($this->join === '') $this->join = $criteria['join']; elseif ($criteria['join'] !== '') $this->join .= ' ' . $criteria['join']; } if (isset($criteria['having']) && $this->having !== $criteria['having']) { if ($this->having === '') $this->having = $criteria['having']; elseif ($criteria['having'] !== '') $this->having = "( {$this->having}) AND ( {$criteria['having']})"; } } } /** * CStatRelation represents a statistical relational query. * @author Qiang Xue */ class CStatRelation extends CBaseActiveRelation { /** * @var string the statistical expression. Defaults to 'COUNT(*)', meaning * the count of child objects. */ public $select = 'COUNT(*)'; /** * @var mixed the default value to be assigned to those records that do not * receive a statistical query result. Defaults to 0. */ public $defaultValue = 0; /** * Merges this relation with a criteria specified dynamically. * @param array $criteria the dynamically specified criteria * @param boolean $fromScope whether the criteria to be merged is from scopes */ public function mergeWith($criteria, $fromScope = false) { if ($criteria instanceof CDbCriteria) $criteria = $criteria->toArray(); parent::mergeWith($criteria, $fromScope); if (isset($criteria['defaultValue'])) $this->defaultValue = $criteria['defaultValue']; } } /** * CActiveRelation is the base class for representing active relations that bring back related objects. * @author Qiang Xue * @since 2.0 */ class CActiveRelation extends CBaseActiveRelation { /** * @var string join type. Defaults to 'LEFT OUTER JOIN'. */ public $joinType = 'LEFT OUTER JOIN'; /** * @var string ON clause. The condition specified here will be appended to the joining condition using AND operator. */ public $on = ''; /** * @var string the alias for the table that this relation refers to. Defaults to null, meaning * the alias will be the same as the relation name. */ public $alias; /** * @var string|array specifies which related objects should be eagerly loaded when this related object is lazily loaded. * For more details about this property, see {@link ActiveRecord::with()}. */ public $with = array(); /** * @var boolean whether this table should be joined with the primary table. * When setting this property to be false, the table associated with this relation will * appear in a separate JOIN statement. * If this property is set true, then the corresponding table will ALWAYS be joined together * with the primary table, no matter the primary table is limited or not. * If this property is not set, the corresponding table will be joined with the primary table * only when the primary table is not limited. */ public $together; /** * @var mixed scopes to apply * Can be set to the one of the following: *
    *
  • Single scope: 'scopes'=>'scopeName'.
  • *
  • Multiple scopes: 'scopes'=>array('scopeName1','scopeName2').
  • *
*/ public $scopes; /** * Merges this relation with a criteria specified dynamically. * @param array $criteria the dynamically specified criteria * @param boolean $fromScope whether the criteria to be merged is from scopes */ public function mergeWith($criteria, $fromScope = false) { if ($criteria instanceof CDbCriteria) $criteria = $criteria->toArray(); if ($fromScope) { if (isset($criteria['condition']) && $this->on !== $criteria['condition']) { if ($this->on === '') $this->on = $criteria['condition']; elseif ($criteria['condition'] !== '') $this->on = "( {$this->on}) AND ( {$criteria['condition']})"; } unset($criteria['condition']); } parent::mergeWith($criteria); if (isset($criteria['joinType'])) $this->joinType = $criteria['joinType']; if (isset($criteria['on']) && $this->on !== $criteria['on']) { if ($this->on === '') $this->on = $criteria['on']; elseif ($criteria['on'] !== '') $this->on = "( {$this->on}) AND ( {$criteria['on']})"; } if (isset($criteria['with'])) $this->with = $criteria['with']; if (isset($criteria['alias'])) $this->alias = $criteria['alias']; if (isset($criteria['together'])) $this->together = $criteria['together']; } } /** * CBelongsToRelation represents the parameters specifying a BELONGS_TO relation. * @author Qiang Xue * @since 2.0 */ class CBelongsToRelation extends CActiveRelation { } /** * CHasOneRelation represents the parameters specifying a HAS_ONE relation. * @author Qiang Xue * @since 2.0 */ class CHasOneRelation extends CActiveRelation { /** * @var string the name of the relation that should be used as the bridge to this relation. * Defaults to null, meaning don't use any bridge. */ public $through; } /** * CHasManyRelation represents the parameters specifying a HAS_MANY relation. * @author Qiang Xue * @since 2.0 */ class CHasManyRelation extends CActiveRelation { /** * @var integer limit of the rows to be selected. It is effective only for lazy loading this related object. Defaults to -1, meaning no limit. */ public $limit = -1; /** * @var integer offset of the rows to be selected. It is effective only for lazy loading this related object. Defaults to -1, meaning no offset. */ public $offset = -1; /** * @var string the name of the column that should be used as the key for storing related objects. * Defaults to null, meaning using zero-based integer IDs. */ public $index; /** * @var string the name of the relation that should be used as the bridge to this relation. * Defaults to null, meaning don't use any bridge. */ public $through; /** * Merges this relation with a criteria specified dynamically. * @param array $criteria the dynamically specified criteria * @param boolean $fromScope whether the criteria to be merged is from scopes */ public function mergeWith($criteria, $fromScope = false) { if ($criteria instanceof CDbCriteria) $criteria = $criteria->toArray(); parent::mergeWith($criteria, $fromScope); if (isset($criteria['limit']) && $criteria['limit'] > 0) $this->limit = $criteria['limit']; if (isset($criteria['offset']) && $criteria['offset'] >= 0) $this->offset = $criteria['offset']; if (isset($criteria['index'])) $this->index = $criteria['index']; } } /** * CManyManyRelation represents the parameters specifying a MANY_MANY relation. * @author Qiang Xue * @since 2.0 */ class CManyManyRelation extends CHasManyRelation { } /** * ActiveRecordMetaData represents the meta-data for an Active Record class. * * @author Qiang Xue * @since 2.0 */ class ActiveRecordMetaData { /** * @var CDbTableSchema the table schema information */ public $tableSchema; /** * @var array table columns */ public $columns; /** * @var array list of relations */ public $relations = array(); /** * @var array attribute default values */ public $attributeDefaults = array(); private $_model; /** * Constructor. * @param ActiveRecord $model the model instance */ public function __construct($model) { $this->_model = $model; $tableName = $model->tableName(); if (($table = $model->getDbConnection()->getSchema()->getTable($tableName)) === null) throw new CDbException(Yii::t('yii', 'The table "{table}" for active record class "{class}" cannot be found in the database.', array('{class}' => get_class($model), '{table}' => $tableName))); if ($table->primaryKey === null) { $table->primaryKey = $model->primaryKey(); if (is_string($table->primaryKey) && isset($table->columns[$table->primaryKey])) $table->columns[$table->primaryKey]->isPrimaryKey = true; elseif (is_array($table->primaryKey)) { foreach ($table->primaryKey as $name) { if (isset($table->columns[$name])) $table->columns[$name]->isPrimaryKey = true; } } } $this->tableSchema = $table; $this->columns = $table->columns; foreach ($table->columns as $name => $column) { if (!$column->isPrimaryKey && $column->defaultValue !== null) $this->attributeDefaults[$name] = $column->defaultValue; } foreach ($model->relations() as $name => $config) { $this->addRelation($name, $config); } } /** * Adds a relation. * * $config is an array with three elements: * relation type, the related active record class and the foreign key. * * @throws CDbException * @param string $name $name Name of the relation. * @param array $config $config Relation parameters. * @return void */ public function addRelation($name, $config) { if (isset($config[0], $config[1], $config[2])) // relation class, AR class, FK $this->relations[$name] = new $config[0]($name, $config[1], $config[2], array_slice($config, 3)); else throw new CDbException(Yii::t('yii', 'Active record "{class}" has an invalid configuration for relation "{relation}". It must specify the relation type, the related active record class and the foreign key.', array('{class}' => get_class($this->_model), '{relation}' => $name))); } /** * Checks if there is a relation with specified name defined. * * @param string $name $name Name of the relation. * @return boolean */ public function hasRelation($name) { return isset($this->relations[$name]); } /** * Deletes a relation with specified name. * * @param string $name $name * @return void */ public function removeRelation($name) { unset($this->relations[$name]); } }