# Class yii\db\AfterSaveEvent

Inheritance | yii\db\AfterSaveEvent » yii\base\Event » yii\base\BaseObject
Implements | yii\base\Configurable
Available since version | 2.0
Source Code | https://github.com/yiisoft/yii2/blob/master/framework/db/AfterSaveEvent.php

AfterSaveEvent represents the information available in yii\db\ActiveRecord::EVENT_AFTER_INSERT and yii\db\ActiveRecord::EVENT_AFTER_UPDATE.

## Public Properties

Hide inherited properties

Property | Type | Description | Defined By
--- | --- | --- | ---
$changedAttributes | array | The attribute values that had changed and were saved. | yii\db\AfterSaveEvent
$data | mixed | The data that is passed to yii\base\Component::on() when attaching an event handler. | yii\base\Event
$handled | boolean | Whether the event is handled. | yii\base\Event
$name | string | The event name. | yii\base\Event
$sender | object|null | The sender of this event. | yii\base\Event

## Public Methods

Hide inherited methods

Method | Description | Defined By
--- | --- | ---
__call() | Calls the named method which is not a class method. | yii\base\BaseObject
__construct() | Constructor. | yii\base\BaseObject
__get() | Returns the value of an object property. | yii\base\BaseObject
__isset() | Checks if a property is set, i.e. defined and not null. | yii\base\BaseObject
__set() | Sets value of an object property. | yii\base\BaseObject
__unset() | Sets an object property to null. | yii\base\BaseObject
canGetProperty() | Returns a value indicating whether a property can be read. | yii\base\BaseObject
canSetProperty() | Returns a value indicating whether a property can be set. | yii\base\BaseObject
className() | Returns the fully qualified name of this class. | yii\base\BaseObject
hasHandlers() | Returns a value indicating whether there is any handler attached to the specified class-level event. | yii\base\Event
hasMethod() | Returns a value indicating whether a method is defined. | yii\base\BaseObject
hasProperty() | Returns a value indicating whether a property is defined. | yii\base\BaseObject
init() | Initializes the object. | yii\base\BaseObject
off() | Detaches an event handler from a class-level event. | yii\base\Event
offAll() | Detaches all registered class-level event handlers. | yii\base\Event
on() | Attaches an event handler to a class-level event. | yii\base\Event
trigger() | Triggers a class-level event. | yii\base\Event

## Property Details

Hide inherited properties

$changedAttributes public property

The attribute values that had changed and were saved.

public array $changedAttributes = null

## Method Details

Hide inherited methods

__call() public method

Defined in: yii\base\BaseObject::__call()

Calls the named method which is not a class method.

Do not call this method directly as it is a PHP magic method that will be implicitly called when an unknown method is being invoked.

public mixed __call ( $name, $params )
$name | string | The method name
$params | array | Method parameters
return | mixed | The method return value
throws | yii\base\UnknownMethodException | when calling unknown method

Source code

                    public function __call($name, $params)
    {
        throw new UnknownMethodException('Calling unknown method: ' . get_class($this) . "::$name()");
    }

__construct() public method

Defined in: yii\base\BaseObject::__construct()

Constructor.

The default implementation does two things:

- Initializes the object with the given configuration `$config`.
- Call init().

If this method is overridden in a child class, it is recommended that

- the last parameter of the constructor is a configuration array, like `$config` here.
- call the parent implementation at the end of the constructor.

public void __construct ( $config = [] )
$config | array | Name-value pairs that will be used to initialize the object properties

Source code

                    public function __construct($config = [])
    {
        if (!empty($config)) {
            Yii::configure($this, $config);
        }
        $this->init();
    }

__get() public method

Defined in: yii\base\BaseObject::__get()

Returns the value of an object property.

Do not call this method directly as it is a PHP magic method that will be implicitly called when executing `$value = $object->property;`.

See also __set().

public mixed __get ( $name )
$name | string | The property name
return | mixed | The property value
throws | yii\base\UnknownPropertyException | if the property is not defined
throws | yii\base\InvalidCallException | if the property is write-only

Source code

                    public function __get($name)
    {
        $getter = 'get' . $name;
        if (method_exists($this, $getter)) {
            return $this->$getter();
        } elseif (method_exists($this, 'set' . $name)) {
            throw new InvalidCallException('Getting write-only property: ' . get_class($this) . '::' . $name);
        }
        throw new UnknownPropertyException('Getting unknown property: ' . get_class($this) . '::' . $name);
    }

__isset() public method

Defined in: yii\base\BaseObject::__isset()

Checks if a property is set, i.e. defined and not null.

Do not call this method directly as it is a PHP magic method that will be implicitly called when executing `isset($object->property)`.

Note that if the property is not defined, false will be returned.

See also https://www.php.net/manual/en/function.isset.php.

public boolean __isset ( $name )
$name | string | The property name or the event name
return | boolean | Whether the named property is set (not null).

Source code

                    public function __isset($name)
    {
        $getter = 'get' . $name;
        if (method_exists($this, $getter)) {
            return $this->$getter() !== null;
        }
        return false;
    }

__set() public method

Defined in: yii\base\BaseObject::__set()

Sets value of an object property.

Do not call this method directly as it is a PHP magic method that will be implicitly called when executing `$object->property = $value;`.

See also __get().

public void __set ( $name, $value )
$name | string | The property name or the event name
$value | mixed | The property value
throws | yii\base\UnknownPropertyException | if the property is not defined
throws | yii\base\InvalidCallException | if the property is read-only

Source code

                    public function __set($name, $value)
    {
        $setter = 'set' . $name;
        if (method_exists($this, $setter)) {
            $this->$setter($value);
        } elseif (method_exists($this, 'get' . $name)) {
            throw new InvalidCallException('Setting read-only property: ' . get_class($this) . '::' . $name);
        } else {
            throw new UnknownPropertyException('Setting unknown property: ' . get_class($this) . '::' . $name);
        }
    }

__unset() public method

Defined in: yii\base\BaseObject::__unset()

Sets an object property to null.

Do not call this method directly as it is a PHP magic method that will be implicitly called when executing `unset($object->property)`.

Note that if the property is not defined, this method will do nothing. If the property is read-only, it will throw an exception.

See also https://www.php.net/manual/en/function.unset.php.

public void __unset ( $name )
$name | string | The property name
throws | yii\base\InvalidCallException | if the property is read only.

Source code

                    public function __unset($name)
    {
        $setter = 'set' . $name;
        if (method_exists($this, $setter)) {
            $this->$setter(null);
        } elseif (method_exists($this, 'get' . $name)) {
            throw new InvalidCallException('Unsetting read-only property: ' . get_class($this) . '::' . $name);
        }
    }

canGetProperty() public method

Defined in: yii\base\BaseObject::canGetProperty()

Returns a value indicating whether a property can be read.

A property is readable if:

- the class has a getter method associated with the specified name (in this case, property name is case-insensitive);
- the class has a member variable with the specified name (when `$checkVars` is true);

See also canSetProperty().

public boolean canGetProperty ( $name, $checkVars = true )
$name | string | The property name
$checkVars | boolean | Whether to treat member variables as properties
return | boolean | Whether the property can be read

Source code

                    public function canGetProperty($name, $checkVars = true)
    {
        return method_exists($this, 'get' . $name) || $checkVars && property_exists($this, $name);
    }

canSetProperty() public method

Defined in: yii\base\BaseObject::canSetProperty()

Returns a value indicating whether a property can be set.

A property is writable if:

- the class has a setter method associated with the specified name (in this case, property name is case-insensitive);
- the class has a member variable with the specified name (when `$checkVars` is true);

See also canGetProperty().

public boolean canSetProperty ( $name, $checkVars = true )
$name | string | The property name
$checkVars | boolean | Whether to treat member variables as properties
return | boolean | Whether the property can be written

Source code

                    public function canSetProperty($name, $checkVars = true)
    {
        return method_exists($this, 'set' . $name) || $checkVars && property_exists($this, $name);
    }

className() public static method
Deprecated since 2.0.14. On PHP >=5.5, use `::class` instead.

Defined in: yii\base\BaseObject::className()

Returns the fully qualified name of this class.

public static string className ( )
return | string | The fully qualified name of this class.

Source code

                    public static function className()
    {
        return get_called_class();
    }

hasHandlers() public static method

Defined in: yii\base\Event::hasHandlers()

Returns a value indicating whether there is any handler attached to the specified class-level event.

Note that this method will also check all parent classes to see if there is any handler attached to the named event.

public static boolean hasHandlers ( $class, $name )
$class | string|object | The object or the fully qualified class name specifying the class-level event.
$name | string | The event name.
return | boolean | Whether there is any handler attached to the event.

Source code

                    public static function hasHandlers($class, $name)
    {
        if (empty(self::$_eventWildcards) && empty(self::$_events[$name])) {
            return false;
        }
        if (is_object($class)) {
            $class = get_class($class);
        } else {
            $class = ltrim($class, '\\');
        }
        $classes = array_merge(
            [$class],
            class_parents($class, true),
            class_implements($class, true)
        );
        // regular events
        foreach ($classes as $className) {
            if (!empty(self::$_events[$name][$className])) {
                return true;
            }
        }
        // wildcard events
        foreach (self::$_eventWildcards as $nameWildcard => $classHandlers) {
            if (!StringHelper::matchWildcard($nameWildcard, $name, ['escape' => false])) {
                continue;
            }
            foreach ($classHandlers as $classWildcard => $handlers) {
                if (empty($handlers)) {
                    continue;
                }
                foreach ($classes as $className) {
                    if (StringHelper::matchWildcard($classWildcard, $className, ['escape' => false])) {
                        return true;
                    }
                }
            }
        }
        return false;
    }

hasMethod() public method

Defined in: yii\base\BaseObject::hasMethod()

Returns a value indicating whether a method is defined.

The default implementation is a call to php function `method_exists()`. You may override this method when you implemented the php magic method `__call()`.

public boolean hasMethod ( $name )
$name | string | The method name
return | boolean | Whether the method is defined

Source code

                    public function hasMethod($name)
    {
        return method_exists($this, $name);
    }

hasProperty() public method

Defined in: yii\base\BaseObject::hasProperty()

Returns a value indicating whether a property is defined.

A property is defined if:

- the class has a getter or setter method associated with the specified name (in this case, property name is case-insensitive);
- the class has a member variable with the specified name (when `$checkVars` is true);

See also:

- canGetProperty()
- canSetProperty()

public boolean hasProperty ( $name, $checkVars = true )
$name | string | The property name
$checkVars | boolean | Whether to treat member variables as properties
return | boolean | Whether the property is defined

Source code

                    public function hasProperty($name, $checkVars = true)
    {
        return $this->canGetProperty($name, $checkVars) || $this->canSetProperty($name, false);
    }

init() public method

Defined in: yii\base\BaseObject::init()

Initializes the object.

This method is invoked at the end of the constructor after the object is initialized with the given configuration.

public void init ( )

Source code

                    public function init()
    {
    }

off() public static method

Defined in: yii\base\Event::off()

Detaches an event handler from a class-level event.

This method is the opposite of on().

Note: in case wildcard pattern is passed for class name or event name, only the handlers registered with this wildcard will be removed, while handlers registered with plain names matching this wildcard will remain.

See also on().

public static boolean off ( $class, $name, $handler = null )
$class | string | The fully qualified class name from which the event handler needs to be detached.
$name | string | The event name.
$handler | callable|null | The event handler to be removed. If it is `null`, all handlers attached to the named event will be removed.
return | boolean | Whether a handler is found and detached.

Source code

                    public static function off($class, $name, $handler = null)
    {
        $class = ltrim($class, '\\');
        if (empty(self::$_events[$name][$class]) && empty(self::$_eventWildcards[$name][$class])) {
            return false;
        }
        if ($handler === null) {
            unset(self::$_events[$name][$class]);
            unset(self::$_eventWildcards[$name][$class]);
            return true;
        }
        // plain event names
        if (isset(self::$_events[$name][$class])) {
            $removed = false;
            foreach (self::$_events[$name][$class] as $i => $event) {
                if ($event[0] === $handler) {
                    unset(self::$_events[$name][$class][$i]);
                    $removed = true;
                }
            }
            if ($removed) {
                self::$_events[$name][$class] = array_values(self::$_events[$name][$class]);
                return true;
            }
        }
        // wildcard event names
        $removed = false;
        if (isset(self::$_eventWildcards[$name][$class])) {
            foreach (self::$_eventWildcards[$name][$class] as $i => $event) {
                if ($event[0] === $handler) {
                    unset(self::$_eventWildcards[$name][$class][$i]);
                    $removed = true;
                }
            }
            if ($removed) {
                self::$_eventWildcards[$name][$class] = array_values(self::$_eventWildcards[$name][$class]);
                // remove empty wildcards to save future redundant regex checks :
                if (empty(self::$_eventWildcards[$name][$class])) {
                    unset(self::$_eventWildcards[$name][$class]);
                    if (empty(self::$_eventWildcards[$name])) {
                        unset(self::$_eventWildcards[$name]);
                    }
                }
            }
        }
        return $removed;
    }

offAll() public static method (available since version 2.0.10)

Defined in: yii\base\Event::offAll()

Detaches all registered class-level event handlers.

See also:

- on()
- off()

public static void offAll ( )

Source code

                    public static function offAll()
    {
        self::$_events = [];
        self::$_eventWildcards = [];
    }

on() public static method

Defined in: yii\base\Event::on()

Attaches an event handler to a class-level event.

When a class-level event is triggered, event handlers attached to that class and all parent classes will be invoked.

For example, the following code attaches an event handler to `ActiveRecord`'s `afterInsert` event:

    Event::on(ActiveRecord::class, ActiveRecord::EVENT_AFTER_INSERT, function ($event) {
        Yii::trace(get_class($event->sender) . ' is inserted.');
    });

The handler will be invoked for EVERY successful ActiveRecord insertion.

Since 2.0.14 you can specify either class name or event name as a wildcard pattern:

    Event::on('app\models\db\*', '*Insert', function ($event) {
        Yii::trace(get_class($event->sender) . ' is inserted.');
    });

For more details about how to declare an event handler, please refer to yii\base\Component::on().

See also off().

public static void on ( $class, $name, $handler, $data = null, $append = true )
$class | string | The fully qualified class name to which the event handler needs to attach.
$name | string | The event name.
$handler | callable | The event handler.
$data | mixed | The data to be passed to the event handler when the event is triggered. When the event handler is invoked, this data can be accessed via yii\base\Event::$data.
$append | boolean | Whether to append new event handler to the end of the existing handler list. If `false`, the new handler will be inserted at the beginning of the existing handler list.

Source code

                    public static function on($class, $name, $handler, $data = null, $append = true)
    {
        $class = ltrim($class, '\\');
        if (strpos($class, '*') !== false || strpos($name, '*') !== false) {
            if ($append || empty(self::$_eventWildcards[$name][$class])) {
                self::$_eventWildcards[$name][$class][] = [$handler, $data];
            } else {
                array_unshift(self::$_eventWildcards[$name][$class], [$handler, $data]);
            }
            return;
        }
        if ($append || empty(self::$_events[$name][$class])) {
            self::$_events[$name][$class][] = [$handler, $data];
        } else {
            array_unshift(self::$_events[$name][$class], [$handler, $data]);
        }
    }

trigger() public static method

Defined in: yii\base\Event::trigger()

Triggers a class-level event.

This method will cause invocation of event handlers that are attached to the named event for the specified class and all its parent classes.

public static void trigger ( $class, $name, $event = null )
$class | string|object | The object or the fully qualified class name specifying the class-level event.
$name | string | The event name.
$event | yii\base\Event|null | The event parameter. If not set, a default yii\base\Event object will be created.

Source code

                    public static function trigger($class, $name, $event = null)
    {
        $wildcardEventHandlers = [];
        foreach (self::$_eventWildcards as $nameWildcard => $classHandlers) {
            if (!StringHelper::matchWildcard($nameWildcard, $name)) {
                continue;
            }
            $wildcardEventHandlers = array_merge($wildcardEventHandlers, $classHandlers);
        }
        if (empty(self::$_events[$name]) && empty($wildcardEventHandlers)) {
            return;
        }
        if ($event === null) {
            $event = new static();
        }
        $event->handled = false;
        $event->name = $name;
        if (is_object($class)) {
            if ($event->sender === null) {
                $event->sender = $class;
            }
            $class = get_class($class);
        } else {
            $class = ltrim($class, '\\');
        }
        $classes = array_merge(
            [$class],
            class_parents($class, true),
            class_implements($class, true)
        );
        foreach ($classes as $class) {
            $eventHandlers = [];
            foreach ($wildcardEventHandlers as $classWildcard => $handlers) {
                if (StringHelper::matchWildcard($classWildcard, $class, ['escape' => false])) {
                    $eventHandlers = array_merge($eventHandlers, $handlers);
                    unset($wildcardEventHandlers[$classWildcard]);
                }
            }
            if (!empty(self::$_events[$name][$class])) {
                $eventHandlers = array_merge($eventHandlers, self::$_events[$name][$class]);
            }
            foreach ($eventHandlers as $handler) {
                $event->data = $handler[1];
                call_user_func($handler[0], $event);
                if ($event->handled) {
                    return;
                }
            }
        }
    }