* @link http://www.yiiframework.com/ * @copyright Copyright © 2008-2012 Yii Software LLC * @license http://www.yiiframework.com/license/ */ namespace yii\db\ar; use yii\db\Exception; use yii\db\dao\Connection; use yii\db\dao\TableSchema; use yii\db\dao\Query; /** * ActiveRecord is the base class for classes representing relational data. * * @author Qiang Xue * @since 2.0 * * @property array $attributes */ abstract class ActiveRecord extends \yii\base\Model { /** * @var */ private static $_md; private $_new = false; // whether this instance is new or not private $_attributes = array(); // attribute name => attribute value private $_oldAttributes; private $_related = array(); // attribute name => related objects private $_pk; // old primary key value /** * Returns the metadata for this AR class. * @param boolean $refresh whether to rebuild the metadata. * @return ActiveMetaData the meta for this AR class. */ public static function getMetaData($refresh = false) { $class = get_called_class(); if (!$refresh && isset(self::$_md[$class])) { return self::$_md[$class]; } else { return self::$_md[$class] = new ActiveMetaData('\\' . $class); } } /** * @static * @param string|array|ActiveQuery $q * @return ActiveQuery * @throws \yii\db\Exception */ public static function find($q = null) { $query = $q instanceof ActiveQuery? $q : static::createQuery(); $query->modelClass = '\\' . get_called_class(); $query->from = static::tableName(); if (is_array($q)) { $query->where($q); } elseif ($q !== null && $query !== $q) { $primaryKey = static::getMetaData()->table->primaryKey; if (is_string($primaryKey)) { $query->where(array($primaryKey => $q)); } else { throw new Exception("Multiple column values are required to find by composite primary keys."); } } return $query; } public static function findBySql($sql, $params = array()) { $query = static::createQuery(); if (!is_array($params)) { $params = func_get_args(); array_shift($params); } $query->setSql($sql); $query->modelClass = '\\' . get_called_class(); return $query->params($params); } public static function exists($condition, $params) { } public static function updateAll() { } public static function updateCounters() { } public static function deleteAll() { } public static function createQuery() { return new ActiveQuery('\\' . get_called_class()); } /** * Returns the database connection used by active record. * By default, the "db" application component is used as the database connection. * You may override this method if you want to use a different database connection. * @return Connection the database connection used by active record. */ public static function getDbConnection() { return \Yii::$application->getDb(); } /** * 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 static function defaultScope() { return array(); } /** * 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 static function tableName() { return basename(get_called_class()); } /** * 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 legacy 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 static function primaryKey() { } /** * Declares the relations for this ActiveRecord class. * * Child classes may want to override this method to specify their relations. * * The following shows how to declare relations for a Programmer AR class: * * ~~~ * return array( * 'manager:Manager' => '?.manager_id = manager.id', * 'assignments:Assignment[]' => array( * 'on' => '?.id = assignments.owner_id AND assignments.status=1', * 'orderBy' => 'assignments.create_time DESC', * ), * 'projects:Project[]' => array( * 'via' => 'assignments', * 'on' => 'projects.id = assignments.project_id', * ), * ); * ~~~ * * 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 static 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 static function scopes() { return array(); } /** * 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 populateData() and model() { return; } $this->setScenario($scenario); $this->setIsNewRecord(true); } /** * PHP sleep magic method. * This method ensures that the model meta data reference is set to null. * @return array */ public function __sleep() { return array_keys((array)$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($this->getMetaData()->table->columns[$name])) { return null; } elseif (isset($this->_related[$name])) { return $this->_related[$name]; } elseif (isset($this->getMetaData()->relations[$name])) { return $this->getRelatedRecord($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, $value) { if (isset($this->getMetaData()->table->columns[$name])) { $this->_attributes[$name] = $value; } elseif (isset($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 $this->getRelatedRecord($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 $this->getRelatedRecord($name, false); } else { return $this->getRelatedRecord($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 $params additional parameters that customize the query conditions as specified in the relation declaration. * This parameter has been available since version 1.0.5. * @return mixed the related object(s). * @throws Exception if the relation is not specified in {@link relations}. */ public function getRelatedRecord($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[$name])) { throw new Exception(Yii::t('yii', '{class} does not have relation "{name}".', array('{class}' => get_class($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, $this->_related); } /** * Returns the list of all attribute names of the model. * This would return all column names of the table associated with this AR class. * @return array list of attribute names. */ public function attributeNames() { return array_keys($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 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; } /** * 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()->table->columns[$name])) { $this->_attributes[$name] = $value; } else { return false; } return true; } /** * 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', $event); } /** * This method is invoked before saving a record (after validation, if any). * The default implementation raises the {@link onBeforeSave} event. * You may override this method to do any preparation work for record saving. * Use {@link isNewRecord} to determine whether the saving is * for inserting or updating record. * Make sure you call the parent implementation so that the event is raised properly. * @return boolean whether the saving should be executed. Defaults to true. */ protected function beforeSave() { if ($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)); } } /** * 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 (!$this->getIsNewRecord()) { throw new Exception(Yii::t('yii', 'The active record cannot be inserted to database because it is not new.')); } if ($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 ($this->getIsNewRecord()) { throw new Exception(Yii::t('yii', 'The active record cannot be updated because it is new.')); } if ($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 Exception(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 $result; } else { return false; } } else { throw new Exception(Yii::t('yii', 'The active record cannot be deleted because it is new.')); } } /** * Repopulates this active record with the latest data. * @return boolean whether the row still exists in the database. If true, the latest data will be populated to this active record. */ public function refresh() { Yii::trace(get_class($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() { $table = static::getMetaData()->table; if (is_string($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; } /** * Creates an active record with the given attributes. * This method is internally used by the find methods. * * @param array $row attribute values (column name=>column value) * * @return ActiveRecord the newly created active record. The class of the object is the same as the model class. * Null is returned if the input data is false. */ public static function populateData($row) { $record = static::instantiate($row); $record->setScenario('update'); $columns = static::getMetaData()->table->columns; foreach ($row as $name => $value) { if (property_exists($record, $name)) { $record->$name = $value; } elseif (isset($columns[$name])) { $record->_attributes[$name] = $value; } } $record->_pk = $record->getPrimaryKey(); return $record; } /** * Creates an active record instance. * This method is called by {@link populateData}. * 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 $row list of attribute values for the active records. * @return ActiveRecord the active record */ protected static function instantiate($row) { return static::newInstance(); } /** * 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); } }