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Mongo Active Record reworked to extend BaseActiveRecord.

tags/2.0.0-beta
Klimov Paul 11 years ago
parent
ac5e1748b7
commit
deffc7f2de
1 changed files with 9 additions and 851 deletions
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  1. 860
      extensions/mongo/ActiveRecord.php

860
extensions/mongo/ActiveRecord.php
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@ -9,10 +9,8 @@ namespace yii\mongo;
use yii\base\InvalidConfigException;
use yii\base\InvalidParamException;
use yii\base\Model;
use yii\base\ModelEvent;
use yii\db\BaseActiveRecord;
use yii\base\UnknownMethodException;
use yii\db\ActiveRelationInterface;
use yii\db\StaleObjectException;
use yii\helpers\Inflector;
use yii\helpers\StringHelper;
@ -23,58 +21,9 @@ use yii\helpers\StringHelper;
* @author Paul Klimov <klimov.paul@gmail.com>
* @since 2.0
*/
abstract class ActiveRecord extends Model
abstract class ActiveRecord extends BaseActiveRecord
{
/**
* @event Event an event that is triggered when the record is initialized via [[init()]].
*/
const EVENT_INIT = 'init';
/**
* @event Event an event that is triggered after the record is created and populated with query result.
*/
const EVENT_AFTER_FIND = 'afterFind';
/**
* @event ModelEvent an event that is triggered before inserting a record.
* You may set [[ModelEvent::isValid]] to be false to stop the insertion.
*/
const EVENT_BEFORE_INSERT = 'beforeInsert';
/**
* @event Event an event that is triggered after a record is inserted.
*/
const EVENT_AFTER_INSERT = 'afterInsert';
/**
* @event ModelEvent an event that is triggered before updating a record.
* You may set [[ModelEvent::isValid]] to be false to stop the update.
*/
const EVENT_BEFORE_UPDATE = 'beforeUpdate';
/**
* @event Event an event that is triggered after a record is updated.
*/
const EVENT_AFTER_UPDATE = 'afterUpdate';
/**
* @event ModelEvent an event that is triggered before deleting a record.
* You may set [[ModelEvent::isValid]] to be false to stop the deletion.
*/
const EVENT_BEFORE_DELETE = 'beforeDelete';
/**
* @event Event an event that is triggered after a record is deleted.
*/
const EVENT_AFTER_DELETE = 'afterDelete';
/**
* @var array attribute values indexed by attribute names
*/
private $_attributes = [];
/**
* @var array old attribute values indexed by attribute names.
*/
private $_oldAttributes;
/**
* @var array related models indexed by the relation names
*/
private $_related = [];
/**
* Returns the database connection used by this AR class.
* 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.
@ -86,39 +35,6 @@ abstract class ActiveRecord extends Model
}
/**
* Creates an [[ActiveQuery]] instance for query purpose.
*
* @param mixed $q the query parameter. This can be one of the followings:
*
* - a scalar value (integer or string): query by a single primary key value and return the
* corresponding record.
* - an array of name-value pairs: query by a set of column values and return a single record matching all of them.
* - null: return a new [[ActiveQuery]] object for further query purpose.
*
* @return ActiveQuery|ActiveRecord|null When `$q` is null, a new [[ActiveQuery]] instance
* is returned; when `$q` is a scalar or an array, an ActiveRecord object matching it will be
* returned (null will be returned if there is no matching).
* @throws InvalidConfigException if the AR class does not have a primary key
* @see createQuery()
*/
public static function find($q = null)
{
$query = static::createQuery();
if (is_array($q)) {
return $query->where($q)->one();
} elseif ($q !== null) {
// query by primary key
$primaryKey = static::primaryKey();
if (isset($primaryKey[0])) {
return $query->where([$primaryKey[0] => $q])->one();
} else {
throw new InvalidConfigException(get_called_class() . ' must have a primary key.');
}
}
return $query;
}
/**
* Updates the whole table using the provided attribute values and conditions.
* For example, to change the status to be 1 for all customers whose status is 2:
*
@ -232,189 +148,6 @@ abstract class ActiveRecord extends Model
}
/**
* Returns the name of the column that stores the lock version for implementing optimistic locking.
*
* Optimistic locking allows multiple users to access the same record for edits and avoids
* potential conflicts. In case when a user attempts to save the record upon some staled data
* (because another user has modified the data), a [[StaleObjectException]] exception will be thrown,
* and the update or deletion is skipped.
*
* Optimistic locking is only supported by [[update()]] and [[delete()]].
*
* To use Optimistic locking:
*
* 1. Create a column to store the version number of each row. The column type should be `BIGINT DEFAULT 0`.
* Override this method to return the name of this column.
* 2. In the Web form that collects the user input, add a hidden field that stores
* the lock version of the recording being updated.
* 3. In the controller action that does the data updating, try to catch the [[StaleObjectException]]
* and implement necessary business logic (e.g. merging the changes, prompting stated data)
* to resolve the conflict.
*
* @return string the column name that stores the lock version of a table row.
* If null is returned (default implemented), optimistic locking will not be supported.
*/
public function optimisticLock()
{
return null;
}
/**
* PHP getter magic method.
* This method is overridden so that attributes and related objects 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]) || array_key_exists($name, $this->_attributes)) {
return $this->_attributes[$name];
} elseif ($this->hasAttribute($name)) {
return null;
} else {
if (isset($this->_related[$name]) || array_key_exists($name, $this->_related)) {
return $this->_related[$name];
}
$value = parent::__get($name);
if ($value instanceof ActiveRelationInterface) {
return $this->_related[$name] = $value->multiple ? $value->all() : $value->one();
} else {
return $value;
}
}
}
/**
* 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->hasAttribute($name)) {
$this->_attributes[$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)
{
try {
return $this->__get($name) !== null;
} catch (\Exception $e) {
return false;
}
}
/**
* 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 ($this->hasAttribute($name)) {
unset($this->_attributes[$name]);
} else {
if (isset($this->_related[$name])) {
unset($this->_related[$name]);
} else {
parent::__unset($name);
}
}
}
/**
* Declares a `has-one` relation.
* The declaration is returned in terms of an [[ActiveRelation]] instance
* through which the related record can be queried and retrieved back.
*
* A `has-one` relation means that there is at most one related record matching
* the criteria set by this relation, e.g., a customer has one country.
*
* For example, to declare the `country` relation for `Customer` class, we can write
* the following code in the `Customer` class:
*
* ~~~
* public function getCountry()
* {
* return $this->hasOne(Country::className(), ['id' => 'country_id']);
* }
* ~~~
*
* Note that in the above, the 'id' key in the `$link` parameter refers to an attribute name
* in the related class `Country`, while the 'country_id' value refers to an attribute name
* in the current AR class.
*
* Call methods declared in [[ActiveRelation]] to further customize the relation.
*
* @param string $class the class name of the related record
* @param array $link the primary-foreign key constraint. The keys of the array refer to
* the attributes of the record associated with the `$class` model, while the values of the
* array refer to the corresponding attributes in **this** AR class.
* @return ActiveRelationInterface the relation object.
*/
public function hasOne($class, $link)
{
/** @var ActiveRecord $class */
return $class::createActiveRelation([
'modelClass' => $class,
'primaryModel' => $this,
'link' => $link,
'multiple' => false,
]);
}
/**
* Declares a `has-many` relation.
* The declaration is returned in terms of an [[ActiveRelation]] instance
* through which the related record can be queried and retrieved back.
*
* A `has-many` relation means that there are multiple related records matching
* the criteria set by this relation, e.g., a customer has many orders.
*
* For example, to declare the `orders` relation for `Customer` class, we can write
* the following code in the `Customer` class:
*
* ~~~
* public function getOrders()
* {
* return $this->hasMany(Order::className(), ['customer_id' => 'id']);
* }
* ~~~
*
* Note that in the above, the 'customer_id' key in the `$link` parameter refers to
* an attribute name in the related class `Order`, while the 'id' value refers to
* an attribute name in the current AR class.
*
* @param string $class the class name of the related record
* @param array $link the primary-foreign key constraint. The keys of the array refer to
* the attributes of the record associated with the `$class` model, while the values of the
* array refer to the corresponding attributes in **this** AR class.
* @return ActiveRelationInterface the relation object.
*/
public function hasMany($class, $link)
{
/** @var ActiveRecord $class */
return $class::createActiveRelation([
'modelClass' => $class,
'primaryModel' => $this,
'link' => $link,
'multiple' => true,
]);
}
/**
* Creates an [[ActiveRelation]] instance.
* This method is called by [[hasOne()]] and [[hasMany()]] to create a relation instance.
* You may override this method to return a customized relation.
@ -427,36 +160,6 @@ abstract class ActiveRecord extends Model
}
/**
* Populates the named relation with the related records.
* Note that this method does not check if the relation exists or not.
* @param string $name the relation name (case-sensitive)
* @param ActiveRecord|array|null the related records to be populated into the relation.
*/
public function populateRelation($name, $records)
{
$this->_related[$name] = $records;
}
/**
* Check whether the named relation has been populated with records.
* @param string $name the relation name (case-sensitive)
* @return bool whether relation has been populated with records.
*/
public function isRelationPopulated($name)
{
return array_key_exists($name, $this->_related);
}
/**
* Returns all populated relations.
* @return array an array of relation data indexed by relation names.
*/
public function getPopulatedRelations()
{
return $this->_related;
}
/**
* Returns the list of all attribute names of the model.
* This method must be overridden by child classes to define available attributes.
* Note: primary key attribute "_id" should be always present in returned array.
@ -475,168 +178,6 @@ abstract class ActiveRecord extends Model
}
/**
* Returns a value indicating whether the model has an attribute with the specified name.
* @param string $name the name of the attribute
* @return boolean whether the model has an attribute with the specified name.
*/
public function hasAttribute($name)
{
return isset($this->_attributes[$name]) || in_array($name, $this->attributes());
}
/**
* Returns the named attribute value.
* If this record is the result of a query and the attribute is not loaded,
* null will be returned.
* @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)
{
return isset($this->_attributes[$name]) ? $this->_attributes[$name] : null;
}
/**
* Sets the named attribute value.
* @param string $name the attribute name
* @param mixed $value the attribute value.
* @throws InvalidParamException if the named attribute does not exist.
* @see hasAttribute()
*/
public function setAttribute($name, $value)
{
if ($this->hasAttribute($name)) {
$this->_attributes[$name] = $value;
} else {
throw new InvalidParamException(get_class($this) . ' has no attribute named "' . $name . '".');
}
}
/**
* Returns the old attribute values.
* @return array the old attribute values (name-value pairs)
*/
public function getOldAttributes()
{
return $this->_oldAttributes === null ? [] : $this->_oldAttributes;
}
/**
* Sets the old attribute values.
* All existing old attribute values will be discarded.
* @param array $values old attribute values to be set.
*/
public function setOldAttributes($values)
{
$this->_oldAttributes = $values;
}
/**
* Returns the old value of the named attribute.
* If this record is the result of a query and the attribute is not loaded,
* null will be returned.
* @param string $name the attribute name
* @return mixed the old attribute value. Null if the attribute is not loaded before
* or does not exist.
* @see hasAttribute()
*/
public function getOldAttribute($name)
{
return isset($this->_oldAttributes[$name]) ? $this->_oldAttributes[$name] : null;
}
/**
* Sets the old value of the named attribute.
* @param string $name the attribute name
* @param mixed $value the old attribute value.
* @throws InvalidParamException if the named attribute does not exist.
* @see hasAttribute()
*/
public function setOldAttribute($name, $value)
{
if (isset($this->_oldAttributes[$name]) || $this->hasAttribute($name)) {
$this->_oldAttributes[$name] = $value;
} else {
throw new InvalidParamException(get_class($this) . ' has no attribute named "' . $name . '".');
}
}
/**
* Returns a value indicating whether the named attribute has been changed.
* @param string $name the name of the attribute
* @return boolean whether the attribute has been changed
*/
public function isAttributeChanged($name)
{
if (isset($this->_attributes[$name], $this->_oldAttributes[$name])) {
return $this->_attributes[$name] !== $this->_oldAttributes[$name];
} else {
return isset($this->_attributes[$name]) || isset($this->_oldAttributes[$name]);
}
}
/**
* Returns the attribute values that have been modified since they are loaded or saved most recently.
* @param string[]|null $names the names of the attributes whose values may be returned if they are
* changed recently. If null, [[attributes()]] will be used.
* @return array the changed attribute values (name-value pairs)
*/
public function getDirtyAttributes($names = null)
{
if ($names === null) {
$names = $this->attributes();
}
$names = array_flip($names);
$attributes = [];
if ($this->_oldAttributes === null) {
foreach ($this->_attributes as $name => $value) {
if (isset($names[$name])) {
$attributes[$name] = $value;
}
}
} else {
foreach ($this->_attributes as $name => $value) {
if (isset($names[$name]) && (!array_key_exists($name, $this->_oldAttributes) || $value !== $this->_oldAttributes[$name])) {
$attributes[$name] = $value;
}
}
}
return $attributes;
}
/**
* Saves the current record.
*
* This method will call [[insert()]] when [[isNewRecord]] is true, or [[update()]]
* when [[isNewRecord]] is false.
*
* For example, to save a customer record:
*
* ~~~
* $customer = new Customer; // or $customer = Customer::find($id);
* $customer->name = $name;
* $customer->email = $email;
* $customer->save();
* ~~~
*
*
* @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, $attributes = null)
{
if ($this->getIsNewRecord()) {
return $this->insert($runValidation, $attributes);
} else {
return $this->update($runValidation, $attributes) !== false;
}
}
/**
* Inserts a row into the associated database table using the attribute values of this record.
*
* This method performs the following steps in order:
@ -686,91 +227,33 @@ abstract class ActiveRecord extends Model
/**
* @see ActiveRecord::insert()
*/
private function insertInternal($attributes = null)
protected function insertInternal($attributes = null)
{
if (!$this->beforeSave(true)) {
return false;
}
$values = $this->getDirtyAttributes($attributes);
if (empty($values)) {
$currentAttributes = $this->getAttributes();
foreach ($this->primaryKey() as $key) {
$values[$key] = isset($this->_attributes[$key]) ? $this->_attributes[$key] : null;
$values[$key] = isset($currentAttributes[$key]) ? $currentAttributes[$key] : null;
}
}
$collection = static::getCollection();
$newId = $collection->insert($values);
$this->setAttribute('_id', $newId);
foreach ($values as $name => $value) {
$this->_oldAttributes[$name] = $value;
$this->setOldAttribute($name, $value);
}
$this->afterSave(true);
return true;
}
/**
* Saves the changes to this active record into the associated database table.
*
* This method performs the following steps in order:
*
* 1. call [[beforeValidate()]] when `$runValidation` is true. If validation
* fails, it will skip the rest of the steps;
* 2. call [[afterValidate()]] when `$runValidation` is true.
* 3. call [[beforeSave()]]. If the method returns false, it will skip the
* rest of the steps;
* 4. save the record into database. If this fails, it will skip the rest of the steps;
* 5. call [[afterSave()]];
*
* In the above step 1, 2, 3 and 5, events [[EVENT_BEFORE_VALIDATE]],
* [[EVENT_BEFORE_UPDATE]], [[EVENT_AFTER_UPDATE]] and [[EVENT_AFTER_VALIDATE]]
* will be raised by the corresponding methods.
*
* Only the [[changedAttributes|changed attribute values]] will be saved into database.
*
* For example, to update a customer record:
*
* ~~~
* $customer = Customer::find($id);
* $customer->name = $name;
* $customer->email = $email;
* $customer->update();
* ~~~
*
* Note that it is possible the update does not affect any row in the table.
* In this case, this method will return 0. For this reason, you should use the following
* code to check if update() is successful or not:
*
* ~~~
* if ($this->update() !== false) {
* // update successful
* } else {
* // update failed
* }
* ~~~
*
* @param boolean $runValidation whether to perform validation before saving the record.
* If the validation fails, the record will not be inserted into the database.
* @param array $attributes list of attributes that need to be saved. Defaults to null,
* meaning all attributes that are loaded from DB will be saved.
* @return integer|boolean the number of rows affected, or false if validation fails
* or [[beforeSave()]] stops the updating process.
* @throws StaleObjectException if [[optimisticLock|optimistic locking]] is enabled and the data
* being updated is outdated.
* @throws \Exception in case update failed.
*/
public function update($runValidation = true, $attributes = null)
{
if ($runValidation && !$this->validate($attributes)) {
return false;
}
$result = $this->updateInternal($attributes);
return $result;
}
/**
* @see CActiveRecord::update()
* @throws StaleObjectException
*/
private function updateInternal($attributes = null)
protected function updateInternal($attributes = null)
{
if (!$this->beforeSave(false)) {
return false;
@ -797,43 +280,13 @@ abstract class ActiveRecord extends Model
}
foreach ($values as $name => $value) {
$this->_oldAttributes[$name] = $this->_attributes[$name];
$this->setOldAttribute($name, $this->getAttribute($name));
}
$this->afterSave(false);
return $rows;
}
/**
* Updates one or several counter columns for the current AR object.
* Note that this method differs from [[updateAllCounters()]] in that it only
* saves counters for the current AR object.
*
* An example usage is as follows:
*
* ~~~
* $post = Post::find($id);
* $post->updateCounters(['view_count' => 1]);
* ~~~
*
* @param array $counters the counters to be updated (attribute name => increment value)
* Use negative values if you want to decrement the counters.
* @return boolean whether the saving is successful
* @see updateAllCounters()
*/
public function updateCounters($counters)
{
if ($this->updateAllCounters($counters, $this->getOldPrimaryKey(true)) > 0) {
foreach ($counters as $name => $value) {
$this->_attributes[$name] += $value;
$this->_oldAttributes[$name] = $this->_attributes[$name];
}
return true;
} else {
return false;
}
}
/**
* Deletes the table row corresponding to this active record.
*
* This method performs the following steps in order:
@ -867,156 +320,13 @@ abstract class ActiveRecord extends Model
if ($lock !== null && !$result) {
throw new StaleObjectException('The object being deleted is outdated.');
}
$this->_oldAttributes = null;
$this->setOldAttributes(null);
$this->afterDelete();
}
return $result;
}
/**
* Returns a value indicating whether the current record is new.
* @return boolean whether the record is new and should be inserted when calling [[save()]].
*/
public function getIsNewRecord()
{
return $this->_oldAttributes === null;
}
/**
* Sets the value indicating whether the record is new.
* @param boolean $value whether the record is new and should be inserted when calling [[save()]].
* @see getIsNewRecord()
*/
public function setIsNewRecord($value)
{
$this->_oldAttributes = $value ? null : $this->_attributes;
}
/**
* Initializes the object.
* This method is called at the end of the constructor.
* The default implementation will trigger an [[EVENT_INIT]] event.
* If you override this method, make sure you call the parent implementation at the end
* to ensure triggering of the event.
*/
public function init()
{
parent::init();
$this->trigger(self::EVENT_INIT);
}
/**
* This method is called when the AR object is created and populated with the query result.
* The default implementation will trigger an [[EVENT_AFTER_FIND]] event.
* When overriding this method, make sure you call the parent implementation to ensure the
* event is triggered.
*/
public function afterFind()
{
$this->trigger(self::EVENT_AFTER_FIND);
}
/**
* This method is called at the beginning of inserting or updating a record.
* The default implementation will trigger an [[EVENT_BEFORE_INSERT]] event when `$insert` is true,
* or an [[EVENT_BEFORE_UPDATE]] event if `$insert` is false.
* When overriding this method, make sure you call the parent implementation like the following:
*
* ~~~
* public function beforeSave($insert)
* {
* if (parent::beforeSave($insert)) {
* // ...custom code here...
* return true;
* } else {
* return false;
* }
* }
* ~~~
*
* @param boolean $insert whether this method called while inserting a record.
* If false, it means the method is called while updating a record.
* @return boolean whether the insertion or updating should continue.
* If false, the insertion or updating will be cancelled.
*/
public function beforeSave($insert)
{
$event = new ModelEvent;
$this->trigger($insert ? self::EVENT_BEFORE_INSERT : self::EVENT_BEFORE_UPDATE, $event);
return $event->isValid;
}
/**
* This method is called at the end of inserting or updating a record.
* The default implementation will trigger an [[EVENT_AFTER_INSERT]] event when `$insert` is true,
* or an [[EVENT_AFTER_UPDATE]] event if `$insert` is false.
* When overriding this method, make sure you call the parent implementation so that
* the event is triggered.
* @param boolean $insert whether this method called while inserting a record.
* If false, it means the method is called while updating a record.
*/
public function afterSave($insert)
{
$this->trigger($insert ? self::EVENT_AFTER_INSERT : self::EVENT_AFTER_UPDATE);
}
/**
* This method is invoked before deleting a record.
* The default implementation raises the [[EVENT_BEFORE_DELETE]] event.
* When overriding this method, make sure you call the parent implementation like the following:
*
* ~~~
* public function beforeDelete()
* {
* if (parent::beforeDelete()) {
* // ...custom code here...
* return true;
* } else {
* return false;
* }
* }
* ~~~
*
* @return boolean whether the record should be deleted. Defaults to true.
*/
public function beforeDelete()
{
$event = new ModelEvent;
$this->trigger(self::EVENT_BEFORE_DELETE, $event);
return $event->isValid;
}
/**
* This method is invoked after deleting a record.
* The default implementation raises the [[EVENT_AFTER_DELETE]] 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.
*/
public function afterDelete()
{
$this->trigger(self::EVENT_AFTER_DELETE);
}
/**
* 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. Otherwise, this record will remain unchanged.
*/
public function refresh()
{
$record = $this->find($this->getPrimaryKey(true));
if ($record === null) {
return false;
}
foreach ($this->attributes() as $name) {
$this->_attributes[$name] = isset($record->_attributes[$name]) ? $record->_attributes[$name] : null;
}
$this->_oldAttributes = $this->_attributes;
$this->_related = [];
return true;
}
/**
* Returns a value indicating whether the given active record is the same as the current one.
* The comparison is made by comparing the table names and the primary key values of the two active records.
* If one of the records [[isNewRecord|is new]] they are also considered not equal.
@ -1030,156 +340,4 @@ abstract class ActiveRecord extends Model
}
return $this->collectionName() === $record->collectionName() && $this->getPrimaryKey() === $record->getPrimaryKey();
}
/**
* Returns the primary key value(s).
* @param boolean $asArray whether to return the primary key value as an array. If true,
* the return value will be an array with column names as keys and column values as values.
* Note that for composite primary keys, an array will always be returned regardless of this parameter value.
* @property mixed The primary key value. An array (column name => column value) is returned if
* the primary key is composite. A string is returned otherwise (null will be returned if
* the key value is null).
* @return mixed the primary key value. An array (column name => column value) is returned if the primary key
* is composite or `$asArray` is true. A string is returned otherwise (null will be returned if
* the key value is null).
*/
public function getPrimaryKey($asArray = false)
{
$keys = $this->primaryKey();
if (count($keys) === 1 && !$asArray) {
return isset($this->_attributes[$keys[0]]) ? $this->_attributes[$keys[0]] : null;
} else {
$values = [];
foreach ($keys as $name) {
$values[$name] = isset($this->_attributes[$name]) ? $this->_attributes[$name] : null;
}
return $values;
}
}
/**
* Returns the old primary key value(s).
* 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.
* @param boolean $asArray whether to return the primary key value as an array. If true,
* the return value will be an array with column name as key and column value as value.
* If this is false (default), a scalar value will be returned for non-composite primary key.
* @property mixed The old primary key value. An array (column name => column value) is
* returned if the primary key is composite. A string is returned otherwise (null will be
* returned if the key value is null).
* @return mixed the old primary key value. An array (column name => column value) is returned if the primary key
* is composite or `$asArray` is true. A string is returned otherwise (null will be returned if
* the key value is null).
*/
public function getOldPrimaryKey($asArray = false)
{
$keys = $this->primaryKey();
if (count($keys) === 1 && !$asArray) {
return isset($this->_oldAttributes[$keys[0]]) ? $this->_oldAttributes[$keys[0]] : null;
} else {
$values = [];
foreach ($keys as $name) {
$values[$name] = isset($this->_oldAttributes[$name]) ? $this->_oldAttributes[$name] : null;
}
return $values;
}
}
/**
* Creates an active record object using a row of data.
* This method is called by [[ActiveQuery]] to populate the query results
* into Active Records. It is not meant to be used to create new records.
* @param array $row attribute values (name => value)
* @return ActiveRecord the newly created active record.
*/
public static function create($row)
{
$record = static::instantiate($row);
$columns = array_flip($record->attributes());
foreach ($row as $name => $value) {
if (isset($columns[$name])) {
$record->_attributes[$name] = $value;
} else {
$record->$name = $value;
}
}
$record->_oldAttributes = $record->_attributes;
$record->afterFind();
return $record;
}
/**
* Creates an active record instance.
* This method is called by [[create()]].
* You may override this method if the instance being created
* depends on the row data to be populated into 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 $row row data to be populated into the record.
* @return ActiveRecord the newly created active record
*/
public static function instantiate($row)
{
return new static;
}
/**
* Returns whether there is an element at the specified offset.
* This method is required by the interface ArrayAccess.
* @param mixed $offset the offset to check on
* @return boolean whether there is an element at the specified offset.
*/
public function offsetExists($offset)
{
return $this->__isset($offset);
}
/**
* Returns the relation object with the specified name.
* A relation is defined by a getter method which returns an [[ActiveRelation]] object.
* It can be declared in either the Active Record class itself or one of its behaviors.
* @param string $name the relation name
* @return ActiveRelation the relation object
* @throws InvalidParamException if the named relation does not exist.
*/
public function getRelation($name)
{
$getter = 'get' . $name;
try {
$relation = $this->$getter();
if ($relation instanceof ActiveRelationInterface) {
return $relation;
} else {
throw new InvalidParamException(get_class($this) . ' has no relation named "' . $name . '".');
}
} catch (UnknownMethodException $e) {
throw new InvalidParamException(get_class($this) . ' has no relation named "' . $name . '".', 0, $e);
}
}
/**
* Sets the element at the specified offset.
* This method is required by the SPL interface `ArrayAccess`.
* It is implicitly called when you use something like `$model[$offset] = $item;`.
* @param integer $offset the offset to set element
* @param mixed $item the element value
* @throws \Exception on failure
*/
public function offsetSet($offset, $item)
{
// Bypass relation owner restriction to 'yii\db\ActiveRecord' at [[yii\db\ActiveRelationTrait::findWith()]]:
try {
$relation = $this->getRelation($offset);
if (is_object($relation)) {
$this->populateRelation($offset, $item);
return;
}
} catch (InvalidParamException $e) {
// shut down exception : has getter, but not relation
} catch (UnknownMethodException $e) {
throw $e->getPrevious();
}
parent::offsetSet($offset, $item);
}
}
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