View represents a view object in the MVC pattern.
View provides a set of methods (e.g. render()) for rendering purpose.
For more details and usage information on View, see the guide article on views.
Property DetailsA list of named output blocks. The keys are the block names and the values are the corresponding block content. You can call beginBlock() and endBlock() to capture small fragments of a view. They can be later accessed somewhere else through this property.
The context under which the renderFile() method is being invoked.
The default view file extension. This will be appended to view file names if they don't have file extensions.
Class instances supporting dynamic contents.
Custom parameters that are shared among view templates.
A list of available renderers indexed by their corresponding supported file extensions. Each renderer may be a view renderer object or the configuration for creating the renderer object. For example, the following configuration enables both Smarty and Twig view renderers:
[
'tpl' => ['class' => 'yii\smarty\ViewRenderer'],
'twig' => ['class' => 'yii\twig\ViewRenderer'],
]
If no renderer is available for the given view file, the view file will be treated as a normal PHP and rendered via renderPhpFile().
The theme object or the configuration for creating the theme object. If not set, it means theming is not enabled.
The view file currently being rendered. False if no view file is being rendered.
Method DetailsDefined in: yii\base\Component::__call()
Calls the named method which is not a class method.
This method will check if any attached behavior has the named method and will execute it if available.
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 function __call($name, $params)
{
$this->ensureBehaviors();
foreach ($this->_behaviors as $object) {
if ($object->hasMethod($name)) {
return call_user_func_array([$object, $name], $params);
}
}
throw new UnknownMethodException('Calling unknown method: ' . get_class($this) . "::$name()");
}
Defined in: yii\base\Component::__clone()
This method is called after the object is created by cloning an existing one.
It removes all behaviors because they are attached to the old object.
public function __clone()
{
$this->_events = [];
$this->_eventWildcards = [];
$this->_behaviors = null;
}
Defined in: yii\base\BaseObject::__construct()
Constructor.
The default implementation does two things:
$config.If this method is overridden in a child class, it is recommended that
$config here.Name-value pairs that will be used to initialize the object properties
public function __construct($config = [])
{
if (!empty($config)) {
Yii::configure($this, $config);
}
$this->init();
}
Defined in: yii\base\Component::__get()
Returns the value of a component property.
This method will check in the following order and act accordingly:
Do not call this method directly as it is a PHP magic method that will be implicitly called when executing $value = $component->property;.
See also __set().
public function __get($name)
{
$getter = 'get' . $name;
if (method_exists($this, $getter)) {
return $this->$getter();
}
$this->ensureBehaviors();
foreach ($this->_behaviors as $behavior) {
if ($behavior->canGetProperty($name)) {
return $behavior->$name;
}
}
if (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) . '::' . $name);
}
Defined in: yii\base\Component::__isset()
Checks if a property is set, i.e. defined and not null.
This method will check in the following order and act accordingly:
false for non existing propertiesDo not call this method directly as it is a PHP magic method that will be implicitly called when executing isset($component->property).
See also https://www.php.net/manual/en/function.isset.php.
public function __isset($name)
{
$getter = 'get' . $name;
if (method_exists($this, $getter)) {
return $this->$getter() !== null;
}
$this->ensureBehaviors();
foreach ($this->_behaviors as $behavior) {
if ($behavior->canGetProperty($name)) {
return $behavior->$name !== null;
}
}
return false;
}
Defined in: yii\base\Component::__set()
Sets the value of a component property.
This method will check in the following order and act accordingly:
Do not call this method directly as it is a PHP magic method that will be implicitly called when executing $component->property = $value;.
See also __get().
public function __set($name, $value)
{
$setter = 'set' . $name;
if (method_exists($this, $setter)) {
$this->$setter($value);
return;
} elseif (strncmp($name, 'on ', 3) === 0) {
$this->on(trim(substr($name, 3)), $value);
return;
} elseif (strncmp($name, 'as ', 3) === 0) {
$name = trim(substr($name, 3));
if ($value instanceof Behavior) {
$this->attachBehavior($name, $value);
} elseif ($value instanceof \Closure) {
$this->attachBehavior($name, call_user_func($value));
} elseif (isset($value['__class']) && is_subclass_of($value['__class'], Behavior::class)) {
$this->attachBehavior($name, Yii::createObject($value));
} elseif (!isset($value['__class']) && isset($value['class']) && is_subclass_of($value['class'], Behavior::class)) {
$this->attachBehavior($name, Yii::createObject($value));
} elseif (is_string($value) && is_subclass_of($value, Behavior::class, true)) {
$this->attachBehavior($name, Yii::createObject($value));
} else {
throw new InvalidConfigException('Class is not of type ' . Behavior::class . ' or its subclasses');
}
return;
}
$this->ensureBehaviors();
foreach ($this->_behaviors as $behavior) {
if ($behavior->canSetProperty($name)) {
$behavior->$name = $value;
return;
}
}
if (method_exists($this, 'get' . $name)) {
throw new InvalidCallException('Setting read-only property: ' . get_class($this) . '::' . $name);
}
throw new UnknownPropertyException('Setting unknown property: ' . get_class($this) . '::' . $name);
}
Defined in: yii\base\Component::__unset()
Sets a component property to be null.
This method will check in the following order and act accordingly:
Do not call this method directly as it is a PHP magic method that will be implicitly called when executing unset($component->property).
See also https://www.php.net/manual/en/function.unset.php.
public function __unset($name)
{
$setter = 'set' . $name;
if (method_exists($this, $setter)) {
$this->$setter(null);
return;
}
$this->ensureBehaviors();
foreach ($this->_behaviors as $behavior) {
if ($behavior->canSetProperty($name)) {
$behavior->$name = null;
return;
}
}
throw new InvalidCallException('Unsetting an unknown or read-only property: ' . get_class($this) . '::' . $name);
}
Adds a placeholder for dynamic content.
This method is used internally to implement the content caching feature.
public void addDynamicPlaceholder ( $placeholder, $statements ) $placeholder $statements stringThe PHP statements for generating the dynamic content.
public function addDynamicPlaceholder($placeholder, $statements)
{
foreach ($this->cacheStack as $cache) {
if ($cache instanceof DynamicContentAwareInterface) {
$cache->addDynamicPlaceholder($placeholder, $statements);
} else {
$cache->dynamicPlaceholders[$placeholder] = $statements;
}
}
$this->dynamicPlaceholders[$placeholder] = $statements;
}
This method is invoked right after renderFile() renders a view file.
The default implementation will trigger the EVENT_AFTER_RENDER event. If you override this method, make sure you call the parent implementation first.
public void afterRender ( $viewFile, $params, &$output ) $viewFile stringThe view file being rendered.
$params arrayThe parameter array passed to the render() method.
$output stringThe rendering result of the view file. Updates to this parameter will be passed back and returned by renderFile().
public function afterRender($viewFile, $params, &$output)
{
if ($this->hasEventHandlers(self::EVENT_AFTER_RENDER)) {
$event = new ViewEvent([
'viewFile' => $viewFile,
'params' => $params,
]);
$event->output =& $output;
$this->trigger(self::EVENT_AFTER_RENDER, $event);
}
}
public function attachBehavior($name, $behavior)
{
$this->ensureBehaviors();
return $this->attachBehaviorInternal($name, $behavior);
}
public void attachBehaviors ( $behaviors ) $behaviors array
List of behaviors to be attached to the component
public function attachBehaviors($behaviors)
{
$this->ensureBehaviors();
foreach ($behaviors as $name => $behavior) {
$this->attachBehaviorInternal($name, $behavior);
}
}
This method is invoked right before renderFile() renders a view file.
The default implementation will trigger the EVENT_BEFORE_RENDER event. If you override this method, make sure you call the parent implementation first.
public function beforeRender($viewFile, $params)
{
$event = new ViewEvent([
'viewFile' => $viewFile,
'params' => $params,
]);
$this->trigger(self::EVENT_BEFORE_RENDER, $event);
return $event->isValid;
}
public function beginBlock($id, $renderInPlace = false)
{
return Block::begin([
'id' => $id,
'renderInPlace' => $renderInPlace,
'view' => $this,
]);
}
Begins fragment caching.
This method will display cached content if it is available. If not, it will start caching and would expect an endCache() call to end the cache and save the content into cache. A typical usage of fragment caching is as follows,
if ($this->beginCache($id)) {
$this->endCache();
}
public function beginCache($id, $properties = [])
{
$properties['id'] = $id;
$properties['view'] = $this;
$cache = FragmentCache::begin($properties);
if ($cache->getCachedContent() !== false) {
$this->endCache();
return false;
}
return true;
}
Begins the rendering of content that is to be decorated by the specified view.
This method can be used to implement nested layout. For example, a layout can be embedded in another layout file specified as '@app/views/layouts/base.php' like the following:
<?php $this->beginContent('@app/views/layouts/base.php'); ?>
<?php $this->endContent(); ?>
See also yii\widgets\ContentDecorator.
public function beginContent($viewFile, $params = [])
{
return ContentDecorator::begin([
'viewFile' => $viewFile,
'params' => $params,
'view' => $this,
]);
}
Marks the beginning of a page.
public function beginPage()
{
ob_start();
ob_implicit_flush(false);
$this->trigger(self::EVENT_BEGIN_PAGE);
}
Defined in: yii\base\Component::behaviors()
Returns a list of behaviors that this component should behave as.
Child classes may override this method to specify the behaviors they want to behave as.
The return value of this method should be an array of behavior objects or configurations indexed by behavior names. A behavior configuration can be either a string specifying the behavior class or an array of the following structure:
'behaviorName' => [
'class' => 'BehaviorClass',
'property1' => 'value1',
'property2' => 'value2',
]
Note that a behavior class must extend from yii\base\Behavior. Behaviors can be attached using a name or anonymously. When a name is used as the array key, using this name, the behavior can later be retrieved using getBehavior() or be detached using detachBehavior(). Anonymous behaviors can not be retrieved or detached.
Behaviors declared in this method will be attached to the component automatically (on demand).
public function behaviors()
{
return [];
}
Defined in: yii\base\Component::canGetProperty()
Returns a value indicating whether a property can be read.
A property can be read if:
$checkVars is true);$checkBehaviors is true).See also canSetProperty().
public boolean canGetProperty ( $name, $checkVars = true, $checkBehaviors = true ) $name stringThe property name
$checkVars booleanWhether to treat member variables as properties
$checkBehaviors booleanWhether to treat behaviors' properties as properties of this component
return booleanWhether the property can be read
public function canGetProperty($name, $checkVars = true, $checkBehaviors = true)
{
if (method_exists($this, 'get' . $name) || $checkVars && property_exists($this, $name)) {
return true;
} elseif ($checkBehaviors) {
$this->ensureBehaviors();
foreach ($this->_behaviors as $behavior) {
if ($behavior->canGetProperty($name, $checkVars)) {
return true;
}
}
}
return false;
}
Defined in: yii\base\Component::canSetProperty()
Returns a value indicating whether a property can be set.
A property can be written if:
$checkVars is true);$checkBehaviors is true).See also canGetProperty().
public boolean canSetProperty ( $name, $checkVars = true, $checkBehaviors = true ) $name stringThe property name
$checkVars booleanWhether to treat member variables as properties
$checkBehaviors booleanWhether to treat behaviors' properties as properties of this component
return booleanWhether the property can be written
public function canSetProperty($name, $checkVars = true, $checkBehaviors = true)
{
if (method_exists($this, 'set' . $name) || $checkVars && property_exists($this, $name)) {
return true;
} elseif ($checkBehaviors) {
$this->ensureBehaviors();
foreach ($this->_behaviors as $behavior) {
if ($behavior->canSetProperty($name, $checkVars)) {
return true;
}
}
}
return false;
}
Deprecated since 2.0.14. On PHP >=5.5, use ::class instead.
public static function className()
{
return get_called_class();
}
public function detachBehavior($name)
{
$this->ensureBehaviors();
if (isset($this->_behaviors[$name])) {
$behavior = $this->_behaviors[$name];
unset($this->_behaviors[$name]);
$behavior->detach();
return $behavior;
}
return null;
}
public function detachBehaviors()
{
$this->ensureBehaviors();
foreach ($this->_behaviors as $name => $behavior) {
$this->detachBehavior($name);
}
}
Ends recording a block.
public function endBlock()
{
Block::end();
}
Ends fragment caching.
public function endCache()
{
FragmentCache::end();
}
Ends the rendering of content.
public function endContent()
{
ContentDecorator::end();
}
Marks the ending of a page.
public function endPage()
{
$this->trigger(self::EVENT_END_PAGE);
ob_end_flush();
}
public function ensureBehaviors()
{
if ($this->_behaviors === null) {
$this->_behaviors = [];
foreach ($this->behaviors() as $name => $behavior) {
$this->attachBehaviorInternal($name, $behavior);
}
}
}
Evaluates the given PHP statements.
This method is mainly used internally to implement dynamic content feature.
public mixed evaluateDynamicContent ( $statements ) $statements stringThe PHP statements to be evaluated.
return mixedThe return value of the PHP statements.
public function evaluateDynamicContent($statements)
{
return eval($statements);
}
Finds the view file based on the given view name.
protected string findViewFile ( $view, $context = null ) $view stringThe view name or the path alias of the view file. Please refer to render() on how to specify this parameter.
$context object|nullThe context to be assigned to the view and can later be accessed via $context in the view. If the context implements yii\base\ViewContextInterface, it may also be used to locate the view file corresponding to a relative view name.
return stringThe view file path. Note that the file may not exist.
throws yii\base\InvalidCallExceptionif a relative view name is given while there is no active context to determine the corresponding view file.
protected function findViewFile($view, $context = null)
{
if (strncmp($view, '@', 1) === 0) {
$file = Yii::getAlias($view);
} elseif (strncmp($view, '//', 2) === 0) {
$file = Yii::$app->getViewPath() . DIRECTORY_SEPARATOR . ltrim($view, '/');
} elseif (strncmp($view, '/', 1) === 0) {
if (Yii::$app->controller !== null) {
$file = Yii::$app->controller->module->getViewPath() . DIRECTORY_SEPARATOR . ltrim($view, '/');
} else {
throw new InvalidCallException("Unable to locate view file for view '$view': no active controller.");
}
} elseif ($context instanceof ViewContextInterface) {
$file = $context->getViewPath() . DIRECTORY_SEPARATOR . $view;
} elseif (($currentViewFile = $this->getRequestedViewFile()) !== false) {
$file = dirname($currentViewFile) . DIRECTORY_SEPARATOR . $view;
} else {
throw new InvalidCallException("Unable to resolve view file for view '$view': no active view context.");
}
if (pathinfo($file, PATHINFO_EXTENSION) !== '') {
return $file;
}
$path = $file . '.' . $this->defaultExtension;
if ($this->defaultExtension !== 'php' && !is_file($path)) {
$path = $file . '.php';
}
return $path;
}
public function getBehavior($name)
{
$this->ensureBehaviors();
return isset($this->_behaviors[$name]) ? $this->_behaviors[$name] : null;
}
public function getBehaviors()
{
$this->ensureBehaviors();
return $this->_behaviors;
}
Returns a list of currently active dynamic content class instances.
public function getDynamicContents()
{
return $this->cacheStack;
}
Returns a list of placeholders for dynamic content. This method is used internally to implement the content caching feature.
public function getDynamicPlaceholders()
{
return $this->dynamicPlaceholders;
}
protected function getRequestedViewFile()
{
return empty($this->_viewFiles) ? false : end($this->_viewFiles)['requested'];
}
public function getViewFile()
{
return empty($this->_viewFiles) ? false : end($this->_viewFiles)['resolved'];
}
public function hasEventHandlers($name)
{
$this->ensureBehaviors();
if (!empty($this->_events[$name])) {
return true;
}
foreach ($this->_eventWildcards as $wildcard => $handlers) {
if (!empty($handlers) && StringHelper::matchWildcard($wildcard, $name)) {
return true;
}
}
return Event::hasHandlers($this, $name);
}
Defined in: yii\base\Component::hasMethod()
Returns a value indicating whether a method is defined.
A method is defined if:
$checkBehaviors is true).The property name
$checkBehaviors booleanWhether to treat behaviors' methods as methods of this component
return booleanWhether the method is defined
public function hasMethod($name, $checkBehaviors = true)
{
if (method_exists($this, $name)) {
return true;
} elseif ($checkBehaviors) {
$this->ensureBehaviors();
foreach ($this->_behaviors as $behavior) {
if ($behavior->hasMethod($name)) {
return true;
}
}
}
return false;
}
Defined in: yii\base\Component::hasProperty()
Returns a value indicating whether a property is defined for this component.
A property is defined if:
$checkVars is true);$checkBehaviors is true).See also:
public boolean hasProperty ( $name, $checkVars = true, $checkBehaviors = true ) $name stringThe property name
$checkVars booleanWhether to treat member variables as properties
$checkBehaviors booleanWhether to treat behaviors' properties as properties of this component
return booleanWhether the property is defined
public function hasProperty($name, $checkVars = true, $checkBehaviors = true)
{
return $this->canGetProperty($name, $checkVars, $checkBehaviors) || $this->canSetProperty($name, false, $checkBehaviors);
}
Initializes the view component.
public function init()
{
parent::init();
if (is_array($this->theme)) {
if (!isset($this->theme['class'])) {
$this->theme['class'] = 'yii\base\Theme';
}
$this->theme = Yii::createObject($this->theme);
} elseif (is_string($this->theme)) {
$this->theme = Yii::createObject($this->theme);
}
}
Defined in: yii\base\Component::off()
Detaches an existing event handler from this component.
This method is the opposite of on().
Note: in case wildcard pattern is passed for 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 boolean off ( $name, $handler = null ) $name stringEvent name
$handler callable|nullThe event handler to be removed. If it is null, all handlers attached to the named event will be removed.
return booleanIf a handler is found and detached
public function off($name, $handler = null)
{
$this->ensureBehaviors();
if (empty($this->_events[$name]) && empty($this->_eventWildcards[$name])) {
return false;
}
if ($handler === null) {
unset($this->_events[$name], $this->_eventWildcards[$name]);
return true;
}
$removed = false;
if (isset($this->_events[$name])) {
foreach ($this->_events[$name] as $i => $event) {
if ($event[0] === $handler) {
unset($this->_events[$name][$i]);
$removed = true;
}
}
if ($removed) {
$this->_events[$name] = array_values($this->_events[$name]);
return true;
}
}
if (isset($this->_eventWildcards[$name])) {
foreach ($this->_eventWildcards[$name] as $i => $event) {
if ($event[0] === $handler) {
unset($this->_eventWildcards[$name][$i]);
$removed = true;
}
}
if ($removed) {
$this->_eventWildcards[$name] = array_values($this->_eventWildcards[$name]);
if (empty($this->_eventWildcards[$name])) {
unset($this->_eventWildcards[$name]);
}
}
}
return $removed;
}
Defined in: yii\base\Component::on()
Attaches an event handler to an event.
The event handler must be a valid PHP callback. The following are some examples:
function ($event) { ... }
[$object, 'handleClick']
['Page', 'handleClick']
'handleClick'
The event handler must be defined with the following signature,
function ($event)
where $event is an yii\base\Event object which includes parameters associated with the event.
Since 2.0.14 you can specify event name as a wildcard pattern:
$component->on('event.group.*', function ($event) {
Yii::trace($event->name . ' is triggered.');
});
See also off().
public void on ( $name, $handler, $data = null, $append = true ) $name stringThe event name
$handler callableThe event handler
$data mixedThe data to be passed to the event handler when the event is triggered. When the event handler is invoked, this data can be accessed via yii\base\Event::$data.
$append booleanWhether to append new event handler to the end of the existing handler list. If false, the new handler will be inserted at the beginning of the existing handler list.
public function on($name, $handler, $data = null, $append = true)
{
$this->ensureBehaviors();
if (strpos($name, '*') !== false) {
if ($append || empty($this->_eventWildcards[$name])) {
$this->_eventWildcards[$name][] = [$handler, $data];
} else {
array_unshift($this->_eventWildcards[$name], [$handler, $data]);
}
return;
}
if ($append || empty($this->_events[$name])) {
$this->_events[$name][] = [$handler, $data];
} else {
array_unshift($this->_events[$name], [$handler, $data]);
}
}
Removes a last class instance supporting dynamic contents from a list of currently active dynamic content class instances.
public function popDynamicContent()
{
array_pop($this->cacheStack);
}
Adds a class instance supporting dynamic contents to the end of a list of currently active dynamic content class instances.
public function pushDynamicContent(DynamicContentAwareInterface $instance)
{
$this->cacheStack[] = $instance;
}
Renders a view.
The view to be rendered can be specified in one of the following formats:
@ or /. The corresponding view file will be looked for under the view path of the view $context. If $context is not given, it will be looked for under the directory containing the view currently being rendered (i.e., this happens when rendering a view within another view).See also renderFile().
public function render($view, $params = [], $context = null)
{
$viewFile = $this->findViewFile($view, $context);
return $this->renderFile($viewFile, $params, $context);
}
Renders dynamic content returned by the given PHP statements.
This method is mainly used together with content caching (fragment caching and page caching) when some portions of the content (called dynamic content) should not be cached. The dynamic content must be returned by some PHP statements.
See also https://github.com/yiisoft/yii2/issues/17673.
public string renderDynamic ( $statements ) $statements stringThe PHP statements for generating the dynamic content.
return stringThe placeholder of the dynamic content, or the dynamic content if there is no active content cache currently.
Note that most methods that indirectly modify layout such as registerJS() or registerJSFile() do not work with dynamic rendering.
public function renderDynamic($statements)
{
if (!empty($this->cacheStack)) {
$n = count($this->dynamicPlaceholders);
$placeholder = "<![CDATA[YII-DYNAMIC-$n]]>";
$this->addDynamicPlaceholder($placeholder, $statements);
return $placeholder;
}
return $this->evaluateDynamicContent($statements);
}
Renders a view file.
If $theme is enabled (not null), it will try to render the themed version of the view file as long as it is available.
The method will call yii\helpers\FileHelper::localize() to localize the view file.
If renderer is enabled (not null), the method will use it to render the view file. Otherwise, it will simply include the view file as a normal PHP file, capture its output and return it as a string.
public string renderFile ( $viewFile, $params = [], $context = null ) $viewFile stringThe view file. This can be either an absolute file path or an alias of it.
$params arrayThe parameters (name-value pairs) that will be extracted and made available in the view file.
$context object|nullThe context that the view should use for rendering the view. If null, existing $context will be used.
return stringThe rendering result
throws yii\base\ViewNotFoundExceptionif the view file does not exist
public function renderFile($viewFile, $params = [], $context = null)
{
$viewFile = $requestedFile = Yii::getAlias($viewFile);
if ($this->theme !== null) {
$viewFile = $this->theme->applyTo($viewFile);
}
if (is_file($viewFile)) {
$viewFile = FileHelper::localize($viewFile);
} else {
throw new ViewNotFoundException("The view file does not exist: $viewFile");
}
$oldContext = $this->context;
if ($context !== null) {
$this->context = $context;
}
$output = '';
$this->_viewFiles[] = [
'resolved' => $viewFile,
'requested' => $requestedFile
];
if ($this->beforeRender($viewFile, $params)) {
Yii::debug("Rendering view file: $viewFile", __METHOD__);
$ext = pathinfo($viewFile, PATHINFO_EXTENSION);
if (isset($this->renderers[$ext])) {
if (is_array($this->renderers[$ext]) || is_string($this->renderers[$ext])) {
$this->renderers[$ext] = Yii::createObject($this->renderers[$ext]);
}
$renderer = $this->renderers[$ext];
$output = $renderer->render($this, $viewFile, $params);
} else {
$output = $this->renderPhpFile($viewFile, $params);
}
$this->afterRender($viewFile, $params, $output);
}
array_pop($this->_viewFiles);
$this->context = $oldContext;
return $output;
}
Renders a view file as a PHP script.
This method treats the view file as a PHP script and includes the file. It extracts the given parameters and makes them available in the view file. The method captures the output of the included view file and returns it as a string.
This method should mainly be called by view renderer or renderFile().
public string renderPhpFile ( $_file_, $_params_ = [] ) $_file_ stringThe view file.
$_params_ arrayThe parameters (name-value pairs) that will be extracted and made available in the view file.
return stringThe rendering result
throws Throwable public function renderPhpFile($_file_, $_params_ = [])
{
$_obInitialLevel_ = ob_get_level();
ob_start();
ob_implicit_flush(false);
extract($_params_, EXTR_OVERWRITE);
try {
require $_file_;
return ob_get_clean();
} catch (\Exception $e) {
while (ob_get_level() > $_obInitialLevel_) {
if (!@ob_end_clean()) {
ob_clean();
}
}
throw $e;
} catch (\Throwable $e) {
while (ob_get_level() > $_obInitialLevel_) {
if (!@ob_end_clean()) {
ob_clean();
}
}
throw $e;
}
}
Sets a list of placeholders for dynamic content. This method is used internally to implement the content caching feature.
public function setDynamicPlaceholders($placeholders)
{
$this->dynamicPlaceholders = $placeholders;
}
Defined in: yii\base\Component::trigger()
Triggers an event.
This method represents the happening of an event. It invokes all attached handlers for the event including class-level handlers.
public function trigger($name, ?Event $event = null)
{
$this->ensureBehaviors();
$eventHandlers = [];
foreach ($this->_eventWildcards as $wildcard => $handlers) {
if (StringHelper::matchWildcard($wildcard, $name)) {
$eventHandlers[] = $handlers;
}
}
if (!empty($this->_events[$name])) {
$eventHandlers[] = $this->_events[$name];
}
if (!empty($eventHandlers)) {
$eventHandlers = call_user_func_array('array_merge', $eventHandlers);
if ($event === null) {
$event = new Event();
}
if ($event->sender === null) {
$event->sender = $this;
}
$event->handled = false;
$event->name = $name;
foreach ($eventHandlers as $handler) {
$event->data = $handler[1];
call_user_func($handler[0], $event);
if ($event->handled) {
return;
}
}
}
Event::trigger($this, $name, $event);
}
Event Details
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