Class yii\widgets\ListView
Inheritance | yii\widgets\ListView » yii\widgets\BaseListView » yii\base\Widget » yii\base\Component » yii\base\BaseObject |
---|---|
Implements | yii\base\Configurable, yii\base\ViewContextInterface |
Available since version | 2.0 |
Source Code | https://github.com/yiisoft/yii2/blob/master/framework/widgets/ListView.php |
The ListView widget is used to display data from data provider. Each data model is rendered using the view specified.
For more details and usage information on ListView, see the guide article on data widgets.
Public Properties
Property | Type | Description | Defined By |
---|---|---|---|
$afterItem | Closure | An anonymous function that is called once AFTER rendering each data model. | yii\widgets\ListView |
$autoIdPrefix | string | The prefix to the automatically generated widget IDs. | yii\base\Widget |
$beforeItem | Closure | An anonymous function that is called once BEFORE rendering each data model. | yii\widgets\ListView |
$behaviors | yii\base\Behavior[] | List of behaviors attached to this component. | yii\base\Component |
$dataProvider | yii\data\DataProviderInterface | The data provider for the view. | yii\widgets\BaseListView |
$emptyText | string|false | The HTML content to be displayed when $dataProvider does not have any data. | yii\widgets\BaseListView |
$emptyTextOptions | array | The HTML attributes for the emptyText of the list view. | yii\widgets\BaseListView |
$id | string|null | ID of the widget. | yii\base\Widget |
$itemOptions | array|Closure | The HTML attributes for the container of the rendering result of each data model. | yii\widgets\ListView |
$itemView | string|callable | The name of the view for rendering each data item, or a callback (e.g. an anonymous function) for rendering each data item. | yii\widgets\ListView |
$layout | string | The layout that determines how different sections of the list view should be organized. | yii\widgets\BaseListView |
$options | array | The HTML attributes for the container tag of the list view. | yii\widgets\ListView |
$pager | array | The configuration for the pager widget. | yii\widgets\BaseListView |
$separator | string | The HTML code to be displayed between any two consecutive items. | yii\widgets\ListView |
$showOnEmpty | boolean | Whether to show an empty list view if $dataProvider returns no data. | yii\widgets\BaseListView |
$sorter | array | The configuration for the sorter widget. | yii\widgets\BaseListView |
$summary | string | The HTML content to be displayed as the summary of the list view. | yii\widgets\BaseListView |
$summaryOptions | array | The HTML attributes for the summary of the list view. | yii\widgets\BaseListView |
$view | yii\web\View | The view object that can be used to render views or view files. | yii\base\Widget |
$viewParams | array | Additional parameters to be passed to $itemView when it is being rendered. | yii\widgets\ListView |
$viewPath | string | The directory containing the view files for this widget. | yii\base\Widget |
Public Methods
Method | Description | Defined By |
---|---|---|
__call() | Calls the named method which is not a class method. | yii\base\Component |
__clone() | This method is called after the object is created by cloning an existing one. | yii\base\Component |
__construct() | Constructor. | yii\base\BaseObject |
__get() | Returns the value of a component property. | yii\base\Component |
__isset() | Checks if a property is set, i.e. defined and not null. | yii\base\Component |
__set() | Sets the value of a component property. | yii\base\Component |
__unset() | Sets a component property to be null. | yii\base\Component |
afterRun() | This method is invoked right after a widget is executed. | yii\base\Widget |
attachBehavior() | Attaches a behavior to this component. | yii\base\Component |
attachBehaviors() | Attaches a list of behaviors to the component. | yii\base\Component |
beforeRun() | This method is invoked right before the widget is executed. | yii\base\Widget |
begin() | Begins a widget. | yii\base\Widget |
behaviors() | Returns a list of behaviors that this component should behave as. | yii\base\Component |
canGetProperty() | Returns a value indicating whether a property can be read. | yii\base\Component |
canSetProperty() | Returns a value indicating whether a property can be set. | yii\base\Component |
className() | Returns the fully qualified name of this class. | yii\base\BaseObject |
detachBehavior() | Detaches a behavior from the component. | yii\base\Component |
detachBehaviors() | Detaches all behaviors from the component. | yii\base\Component |
end() | Ends a widget. | yii\base\Widget |
ensureBehaviors() | Makes sure that the behaviors declared in behaviors() are attached to this component. | yii\base\Component |
getBehavior() | Returns the named behavior object. | yii\base\Component |
getBehaviors() | Returns all behaviors attached to this component. | yii\base\Component |
getId() | Returns the ID of the widget. | yii\base\Widget |
getView() | Returns the view object that can be used to render views or view files. | yii\base\Widget |
getViewPath() | Returns the directory containing the view files for this widget. | yii\base\Widget |
hasEventHandlers() | Returns a value indicating whether there is any handler attached to the named event. | yii\base\Component |
hasMethod() | Returns a value indicating whether a method is defined. | yii\base\Component |
hasProperty() | Returns a value indicating whether a property is defined for this component. | yii\base\Component |
init() | Initializes the view. | yii\widgets\BaseListView |
off() | Detaches an existing event handler from this component. | yii\base\Component |
on() | Attaches an event handler to an event. | yii\base\Component |
render() | Renders a view. | yii\base\Widget |
renderEmpty() | Renders the HTML content indicating that the list view has no data. | yii\widgets\BaseListView |
renderFile() | Renders a view file. | yii\base\Widget |
renderItem() | Renders a single data model. | yii\widgets\ListView |
renderItems() | Renders all data models. | yii\widgets\ListView |
renderPager() | Renders the pager. | yii\widgets\BaseListView |
renderSection() | Renders a section of the specified name. | yii\widgets\BaseListView |
renderSorter() | Renders the sorter. | yii\widgets\BaseListView |
renderSummary() | Renders the summary text. | yii\widgets\BaseListView |
run() | Runs the widget. | yii\widgets\BaseListView |
setId() | Sets the ID of the widget. | yii\base\Widget |
setView() | Sets the view object to be used by this widget. | yii\base\Widget |
trigger() | Triggers an event. | yii\base\Component |
widget() | Creates a widget instance and runs it. | yii\base\Widget |
Protected Methods
Method | Description | Defined By |
---|---|---|
renderAfterItem() | Calls $afterItem closure, returns execution result. | yii\widgets\ListView |
renderBeforeItem() | Calls $beforeItem closure, returns execution result. | yii\widgets\ListView |
Events
Event | Type | Description | Defined By |
---|---|---|---|
EVENT_AFTER_RUN | yii\base\WidgetEvent | An event raised right after executing a widget. (available since version 2.0.11) | yii\base\Widget |
EVENT_BEFORE_RUN | yii\base\WidgetEvent | An event raised right before executing a widget. (available since version 2.0.11) | yii\base\Widget |
EVENT_INIT | yii\base\Event | An event that is triggered when the widget is initialized via init(). (available since version 2.0.11) | yii\base\Widget |
Property Details
An anonymous function that is called once AFTER rendering each data model.
It should have the same signature as $beforeItem.
The return result of the function will be rendered directly.
Note: If the function returns null
, nothing will be rendered after the item.
See also renderAfterItem().
An anonymous function that is called once BEFORE rendering each data model. It should have the following signature:
function ($model, $key, $index, $widget)
$model
: the current data model being rendered$key
: the key value associated with the current data model$index
: the zero-based index of the data model in the model array returned by $dataProvider$widget
: the ListView object
The return result of the function will be rendered directly.
Note: If the function returns null
, nothing will be rendered before the item.
See also renderBeforeItem().
The HTML attributes for the container of the rendering result of each data model. This can be either an array specifying the common HTML attributes for rendering each data item, or an anonymous function that returns an array of the HTML attributes. The anonymous function will be called once for every data model returned by $dataProvider. The "tag" element specifies the tag name of the container element and defaults to "div". If "tag" is false, it means no container element will be rendered.
If this property is specified as an anonymous function, it should have the following signature:
function ($model, $key, $index, $widget)
See also yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered.
The name of the view for rendering each data item, or a callback (e.g. an anonymous function) for rendering each data item. If it specifies a view name, the following variables will be available in the view:
$model
: mixed, the data model$key
: mixed, the key value associated with the data item$index
: integer, the zero-based index of the data item in the items array returned by $dataProvider.$widget
: ListView, this widget instance
Note that the view name is resolved into the view file by the current context of the $view object.
If this property is specified as a callback, it should have the following signature:
function ($model, $key, $index, $widget)
The HTML attributes for the container tag of the list view. The "tag" element specifies the tag name of the container element and defaults to "div".
See also yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered.
The HTML code to be displayed between any two consecutive items.
Method Details
Defined 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 mixed __call ( $name, $params ) | ||
$name | string |
The method name |
$params | array |
Method parameters |
return | mixed |
The method return value |
---|---|---|
throws | yii\base\UnknownMethodException |
when calling unknown method |
public function __call($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 void __clone ( ) |
public function __clone()
{
$this->_events = [];
$this->_eventWildcards = [];
$this->_behaviors = null;
}
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 = [] ) | ||
$config | array |
Name-value pairs that will be used to initialize the object properties |
public function __construct($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:
- a property defined by a getter: return the getter result
- a property of a behavior: return the behavior property value
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 mixed __get ( $name ) | ||
$name | string |
The property name |
return | mixed |
The property value or the value of a behavior's property |
---|---|---|
throws | yii\base\UnknownPropertyException |
if the property is not defined |
throws | yii\base\InvalidCallException |
if the property is write-only. |
public function __get($name)
{
$getter = 'get' . $name;
if (method_exists($this, $getter)) {
// read property, e.g. getName()
return $this->$getter();
}
// behavior property
$this->ensureBehaviors();
foreach ($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) . '::' . $name);
}
Defined in: yii\base\Component::__isset()
Checks if a property is set, i.e. defined and not null.
This method will check in the following order and act accordingly:
- a property defined by a setter: return whether the property is set
- a property of a behavior: return whether the property is set
- return
false
for non existing properties
Do not call this method directly as it is a PHP magic method that
will be implicitly called when executing isset($component->property)
.
public boolean __isset ( $name ) | ||
$name | string |
The property name or the event name |
return | boolean |
Whether the named property is set |
---|
public function __isset($name)
{
$getter = 'get' . $name;
if (method_exists($this, $getter)) {
return $this->$getter() !== null;
}
// behavior property
$this->ensureBehaviors();
foreach ($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:
- a property defined by a setter: set the property value
- an event in the format of "on xyz": attach the handler to the event "xyz"
- a behavior in the format of "as xyz": attach the behavior named as "xyz"
- a property of a behavior: set the behavior property value
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 void __set ( $name, $value ) | ||
$name | string |
The property name or the event name |
$value | mixed |
The property value |
throws | yii\base\UnknownPropertyException |
if the property is not defined |
---|---|---|
throws | yii\base\InvalidCallException |
if the property is read-only. |
public function __set($name, $value)
{
$setter = 'set' . $name;
if (method_exists($this, $setter)) {
// set property
$this->$setter($value);
return;
} elseif (strncmp($name, 'on ', 3) === 0) {
// on event: attach event handler
$this->on(trim(substr($name, 3)), $value);
return;
} elseif (strncmp($name, 'as ', 3) === 0) {
// as behavior: attach behavior
$name = trim(substr($name, 3));
$this->attachBehavior($name, $value instanceof Behavior ? $value : Yii::createObject($value));
return;
}
// behavior property
$this->ensureBehaviors();
foreach ($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) . '::' . $name);
}
Defined in: yii\base\Component::__unset()
Sets a component property to be null.
This method will check in the following order and act accordingly:
- a property defined by a setter: set the property value to be null
- a property of a behavior: set the property value to be null
Do not call this method directly as it is a PHP magic method that
will be implicitly called when executing unset($component->property)
.
public void __unset ( $name ) | ||
$name | string |
The property name |
throws | yii\base\InvalidCallException |
if the property is read only. |
---|
public function __unset($name)
{
$setter = 'set' . $name;
if (method_exists($this, $setter)) {
$this->$setter(null);
return;
}
// behavior property
$this->ensureBehaviors();
foreach ($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) . '::' . $name);
}
Defined in: yii\base\Widget::afterRun()
This method is invoked right after a widget is executed.
The method will trigger the EVENT_AFTER_RUN event. The return value of the method will be used as the widget return value.
If you override this method, your code should look like the following:
public function afterRun($result)
{
$result = parent::afterRun($result);
// your custom code here
return $result;
}
public mixed afterRun ( $result ) | ||
$result | mixed |
The widget return result. |
return | mixed |
The processed widget result. |
---|
public function afterRun($result)
{
$event = new WidgetEvent();
$event->result = $result;
$this->trigger(self::EVENT_AFTER_RUN, $event);
return $event->result;
}
Defined in: yii\base\Component::attachBehavior()
Attaches a behavior to this component.
This method will create the behavior object based on the given configuration. After that, the behavior object will be attached to this component by calling the yii\base\Behavior::attach() method.
See also detachBehavior().
public yii\base\Behavior attachBehavior ( $name, $behavior ) | ||
$name | string |
The name of the behavior. |
$behavior | string|array|yii\base\Behavior |
The behavior configuration. This can be one of the following:
|
return | yii\base\Behavior |
The behavior object |
---|
public function attachBehavior($name, $behavior)
{
$this->ensureBehaviors();
return $this->attachBehaviorInternal($name, $behavior);
}
Defined in: yii\base\Component::attachBehaviors()
Attaches a list of behaviors to the component.
Each behavior is indexed by its name and should be a yii\base\Behavior object, a string specifying the behavior class, or an configuration array for creating the behavior.
See also attachBehavior().
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);
}
}
Defined in: yii\base\Widget::beforeRun()
This method is invoked right before the widget is executed.
The method will trigger the EVENT_BEFORE_RUN event. The return value of the method will determine whether the widget should continue to run.
When overriding this method, make sure you call the parent implementation like the following:
public function beforeRun()
{
if (!parent::beforeRun()) {
return false;
}
// your custom code here
return true; // or false to not run the widget
}
public boolean beforeRun ( ) | ||
return | boolean |
Whether the widget should continue to be executed. |
---|
public function beforeRun()
{
$event = new WidgetEvent();
$this->trigger(self::EVENT_BEFORE_RUN, $event);
return $event->isValid;
}
Defined in: yii\base\Widget::begin()
Begins a widget.
This method creates an instance of the calling class. It will apply the configuration to the created instance. A matching end() call should be called later. As some widgets may use output buffering, the end() call should be made in the same view to avoid breaking the nesting of output buffers.
See also end().
public static static begin ( $config = [] ) | ||
$config | array |
Name-value pairs that will be used to initialize the object properties |
return | yii\base\Widget |
The newly created widget instance |
---|
public static function begin($config = [])
{
$config['class'] = get_called_class();
/* @var $widget Widget */
$widget = Yii::createObject($config);
self::$stack[] = $widget;
return $widget;
}
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 array behaviors ( ) | ||
return | array |
The behavior configurations. |
---|
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:
- 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); - an attached behavior has a readable property of the given name (when
$checkBehaviors
is true).
See also canSetProperty().
public boolean canGetProperty ( $name, $checkVars = true, $checkBehaviors = true ) | ||
$name | string |
The property name |
$checkVars | boolean |
Whether to treat member variables as properties |
$checkBehaviors | boolean |
Whether to treat behaviors' properties as properties of this component |
return | boolean |
Whether the property can be read |
---|
public function canGetProperty($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:
- 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); - an attached behavior has a writable property of the given name (when
$checkBehaviors
is true).
See also canGetProperty().
public boolean canSetProperty ( $name, $checkVars = true, $checkBehaviors = true ) | ||
$name | string |
The property name |
$checkVars | boolean |
Whether to treat member variables as properties |
$checkBehaviors | boolean |
Whether to treat behaviors' properties as properties of this component |
return | boolean |
Whether the property can be written |
---|
public function canSetProperty($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;
}
::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. |
---|
public static function className()
{
return get_called_class();
}
Defined in: yii\base\Component::detachBehavior()
Detaches a behavior from the component.
The behavior's yii\base\Behavior::detach() method will be invoked.
public yii\base\Behavior|null detachBehavior ( $name ) | ||
$name | string |
The behavior's name. |
return | yii\base\Behavior|null |
The detached behavior. Null if the behavior does not exist. |
---|
public function detachBehavior($name)
{
$this->ensureBehaviors();
if (isset($this->_behaviors[$name])) {
$behavior = $this->_behaviors[$name];
unset($this->_behaviors[$name]);
$behavior->detach();
return $behavior;
}
return null;
}
Defined in: yii\base\Component::detachBehaviors()
Detaches all behaviors from the component.
public void detachBehaviors ( ) |
public function detachBehaviors()
{
$this->ensureBehaviors();
foreach ($this->_behaviors as $name => $behavior) {
$this->detachBehavior($name);
}
}
Defined in: yii\base\Widget::end()
Ends a widget.
Note that the rendering result of the widget is directly echoed out.
See also begin().
public static static end ( ) | ||
return | yii\base\Widget |
The widget instance that is ended. |
---|---|---|
throws | yii\base\InvalidCallException |
public static function end()
{
if (!empty(self::$stack)) {
$widget = array_pop(self::$stack);
$calledClass = get_called_class();
if (Yii::$container->has($calledClass) && isset(Yii::$container->getDefinitions()[$calledClass]['class'])) {
$calledClass = Yii::$container->getDefinitions()[$calledClass]['class'];
}
if (get_class($widget) === $calledClass) {
/* @var $widget Widget */
if ($widget->beforeRun()) {
$result = $widget->run();
$result = $widget->afterRun($result);
echo $result;
}
return $widget;
}
throw new InvalidCallException('Expecting end() of ' . get_class($widget) . ', found ' . get_called_class());
}
throw new InvalidCallException('Unexpected ' . get_called_class() . '::end() call. A matching begin() is not found.');
}
Defined in: yii\base\Component::ensureBehaviors()
Makes sure that the behaviors declared in behaviors() are attached to this component.
public void ensureBehaviors ( ) |
public function ensureBehaviors()
{
if ($this->_behaviors === null) {
$this->_behaviors = [];
foreach ($this->behaviors() as $name => $behavior) {
$this->attachBehaviorInternal($name, $behavior);
}
}
}
Defined in: yii\base\Component::getBehavior()
Returns the named behavior object.
public yii\base\Behavior|null getBehavior ( $name ) | ||
$name | string |
The behavior name |
return | yii\base\Behavior|null |
The behavior object, or null if the behavior does not exist |
---|
public function getBehavior($name)
{
$this->ensureBehaviors();
return isset($this->_behaviors[$name]) ? $this->_behaviors[$name] : null;
}
Defined in: yii\base\Component::getBehaviors()
Returns all behaviors attached to this component.
public yii\base\Behavior[] getBehaviors ( ) | ||
return | yii\base\Behavior[] |
List of behaviors attached to this component |
---|
public function getBehaviors()
{
$this->ensureBehaviors();
return $this->_behaviors;
}
Defined in: yii\base\Widget::getId()
Returns the ID of the widget.
public string|null getId ( $autoGenerate = true ) | ||
$autoGenerate | boolean |
Whether to generate an ID if it is not set previously |
return | string|null |
ID of the widget. |
---|
public function getId($autoGenerate = true)
{
if ($autoGenerate && $this->_id === null) {
$this->_id = static::$autoIdPrefix . static::$counter++;
}
return $this->_id;
}
Defined in: yii\base\Widget::getView()
Returns the view object that can be used to render views or view files.
The render() and renderFile() methods will use this view object to implement the actual view rendering. If not set, it will default to the "view" application component.
public yii\web\View getView ( ) | ||
return | yii\web\View |
The view object that can be used to render views or view files. |
---|
public function getView()
{
if ($this->_view === null) {
$this->_view = Yii::$app->getView();
}
return $this->_view;
}
Defined in: yii\base\Widget::getViewPath()
Returns the directory containing the view files for this widget.
The default implementation returns the 'views' subdirectory under the directory containing the widget class file.
public string getViewPath ( ) | ||
return | string |
The directory containing the view files for this widget. |
---|
public function getViewPath()
{
$class = new ReflectionClass($this);
return dirname($class->getFileName()) . DIRECTORY_SEPARATOR . 'views';
}
Defined in: yii\base\Component::hasEventHandlers()
Returns a value indicating whether there is any handler attached to the named event.
public boolean hasEventHandlers ( $name ) | ||
$name | string |
The event name |
return | boolean |
Whether there is any handler attached to the event. |
---|
public function hasEventHandlers($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:
- the class has a method with the specified name
- an attached behavior has a method with the given name (when
$checkBehaviors
is true).
public boolean hasMethod ( $name, $checkBehaviors = true ) | ||
$name | string |
The property name |
$checkBehaviors | boolean |
Whether to treat behaviors' methods as methods of this component |
return | boolean |
Whether the method is defined |
---|
public function hasMethod($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:
- 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); - an attached behavior has a property of the given name (when
$checkBehaviors
is true).
See also:
public boolean hasProperty ( $name, $checkVars = true, $checkBehaviors = true ) | ||
$name | string |
The property name |
$checkVars | boolean |
Whether to treat member variables as properties |
$checkBehaviors | boolean |
Whether to treat behaviors' properties as properties of this component |
return | boolean |
Whether the property is defined |
---|
public function hasProperty($name, $checkVars = true, $checkBehaviors = true)
{
return $this->canGetProperty($name, $checkVars, $checkBehaviors) || $this->canSetProperty($name, false, $checkBehaviors);
}
Defined in: yii\widgets\BaseListView::init()
Initializes the view.
public void init ( ) |
public function init()
{
parent::init();
if ($this->dataProvider === null) {
throw new InvalidConfigException('The "dataProvider" property must be set.');
}
if ($this->emptyText === null) {
$this->emptyText = Yii::t('yii', 'No results found.');
}
if (!isset($this->options['id'])) {
$this->options['id'] = $this->getId();
}
}
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 | string |
Event name |
$handler | callable|null |
The event handler to be removed. If it is null, all handlers attached to the named event will be removed. |
return | boolean |
If a handler is found and detached |
---|
public function off($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;
}
$removed = false;
// plain event names
if (isset($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;
}
}
// wildcard event names
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]);
// remove empty wildcards to save future redundant regex checks:
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) { ... } // anonymous function
[$object, 'handleClick'] // $object->handleClick()
['Page', 'handleClick'] // Page::handleClick()
'handleClick' // global function handleClick()
The event handler must be defined with the following signature,
function ($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 | 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. |
$append | boolean |
Whether to append new event handler to the end of the existing handler list. If false, the new handler will be inserted at the beginning of the existing handler list. |
public function on($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]);
}
}
Defined in: yii\base\Widget::render()
Renders a view.
The view to be rendered can be specified in one of the following formats:
- path alias (e.g. "@app/views/site/index");
- absolute path within application (e.g. "//site/index"): the view name starts with double slashes. The actual view file will be looked for under the view path of the application.
- absolute path within module (e.g. "/site/index"): the view name starts with a single slash. The actual view file will be looked for under the view path of the currently active module.
- relative path (e.g. "index"): the actual view file will be looked for under $viewPath.
If the view name does not contain a file extension, it will use the default one .php
.
public string render ( $view, $params = [] ) | ||
$view | string |
The view name. |
$params | array |
The parameters (name-value pairs) that should be made available in the view. |
return | string |
The rendering result. |
---|---|---|
throws | yii\base\InvalidArgumentException |
if the view file does not exist. |
public function render($view, $params = [])
{
return $this->getView()->render($view, $params, $this);
}
Calls $afterItem closure, returns execution result.
If $afterItem is not a closure, null
will be returned.
See also $afterItem.
protected string|null renderAfterItem ( $model, $key, $index ) | ||
$model | mixed |
The data model to be rendered |
$key | mixed |
The key value associated with the data model |
$index | integer |
The zero-based index of the data model in the model array returned by $dataProvider. |
return | string|null |
$afterItem call result or |
---|
protected function renderAfterItem($model, $key, $index)
{
if ($this->afterItem instanceof Closure) {
return call_user_func($this->afterItem, $model, $key, $index, $this);
}
return null;
}
Calls $beforeItem closure, returns execution result.
If $beforeItem is not a closure, null
will be returned.
See also $beforeItem.
protected string|null renderBeforeItem ( $model, $key, $index ) | ||
$model | mixed |
The data model to be rendered |
$key | mixed |
The key value associated with the data model |
$index | integer |
The zero-based index of the data model in the model array returned by $dataProvider. |
return | string|null |
$beforeItem call result or |
---|
protected function renderBeforeItem($model, $key, $index)
{
if ($this->beforeItem instanceof Closure) {
return call_user_func($this->beforeItem, $model, $key, $index, $this);
}
return null;
}
Defined in: yii\widgets\BaseListView::renderEmpty()
Renders the HTML content indicating that the list view has no data.
See also $emptyText.
public string renderEmpty ( ) | ||
return | string |
The rendering result |
---|
public function renderEmpty()
{
if ($this->emptyText === false) {
return '';
}
$options = $this->emptyTextOptions;
$tag = ArrayHelper::remove($options, 'tag', 'div');
return Html::tag($tag, $this->emptyText, $options);
}
Defined in: yii\base\Widget::renderFile()
Renders a view file.
public string renderFile ( $file, $params = [] ) | ||
$file | string |
The view file to be rendered. This can be either a file path or a path alias. |
$params | array |
The parameters (name-value pairs) that should be made available in the view. |
return | string |
The rendering result. |
---|---|---|
throws | yii\base\InvalidArgumentException |
if the view file does not exist. |
public function renderFile($file, $params = [])
{
return $this->getView()->renderFile($file, $params, $this);
}
Renders a single data model.
public string renderItem ( $model, $key, $index ) | ||
$model | mixed |
The data model to be rendered |
$key | mixed |
The key value associated with the data model |
$index | integer |
The zero-based index of the data model in the model array returned by $dataProvider. |
return | string |
The rendering result |
---|
public function renderItem($model, $key, $index)
{
if ($this->itemView === null) {
$content = $key;
} elseif (is_string($this->itemView)) {
$content = $this->getView()->render($this->itemView, array_merge([
'model' => $model,
'key' => $key,
'index' => $index,
'widget' => $this,
], $this->viewParams));
} else {
$content = call_user_func($this->itemView, $model, $key, $index, $this);
}
if ($this->itemOptions instanceof Closure) {
$options = call_user_func($this->itemOptions, $model, $key, $index, $this);
} else {
$options = $this->itemOptions;
}
$tag = ArrayHelper::remove($options, 'tag', 'div');
$options['data-key'] = is_array($key) ? json_encode($key, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE) : (string) $key;
return Html::tag($tag, $content, $options);
}
Renders all data models.
public string renderItems ( ) | ||
return | string |
The rendering result |
---|
public function renderItems()
{
$models = $this->dataProvider->getModels();
$keys = $this->dataProvider->getKeys();
$rows = [];
foreach (array_values($models) as $index => $model) {
$key = $keys[$index];
if (($before = $this->renderBeforeItem($model, $key, $index)) !== null) {
$rows[] = $before;
}
$rows[] = $this->renderItem($model, $key, $index);
if (($after = $this->renderAfterItem($model, $key, $index)) !== null) {
$rows[] = $after;
}
}
return implode($this->separator, $rows);
}
Defined in: yii\widgets\BaseListView::renderPager()
Renders the pager.
public string renderPager ( ) | ||
return | string |
The rendering result |
---|
public function renderPager()
{
$pagination = $this->dataProvider->getPagination();
if ($pagination === false || $this->dataProvider->getCount() <= 0) {
return '';
}
/* @var $class LinkPager */
$pager = $this->pager;
$class = ArrayHelper::remove($pager, 'class', LinkPager::className());
$pager['pagination'] = $pagination;
$pager['view'] = $this->getView();
return $class::widget($pager);
}
Defined in: yii\widgets\BaseListView::renderSection()
Renders a section of the specified name.
If the named section is not supported, false will be returned.
public string|boolean renderSection ( $name ) | ||
$name | string |
The section name, e.g., |
return | string|boolean |
The rendering result of the section, or false if the named section is not supported. |
---|
public function renderSection($name)
{
switch ($name) {
case '{summary}':
return $this->renderSummary();
case '{items}':
return $this->renderItems();
case '{pager}':
return $this->renderPager();
case '{sorter}':
return $this->renderSorter();
default:
return false;
}
}
Defined in: yii\widgets\BaseListView::renderSorter()
Renders the sorter.
public string renderSorter ( ) | ||
return | string |
The rendering result |
---|
public function renderSorter()
{
$sort = $this->dataProvider->getSort();
if ($sort === false || empty($sort->attributes) || $this->dataProvider->getCount() <= 0) {
return '';
}
/* @var $class LinkSorter */
$sorter = $this->sorter;
$class = ArrayHelper::remove($sorter, 'class', LinkSorter::className());
$sorter['sort'] = $sort;
$sorter['view'] = $this->getView();
return $class::widget($sorter);
}
Defined in: yii\widgets\BaseListView::renderSummary()
Renders the summary text.
public void renderSummary ( ) |
public function renderSummary()
{
$count = $this->dataProvider->getCount();
if ($count <= 0) {
return '';
}
$summaryOptions = $this->summaryOptions;
$tag = ArrayHelper::remove($summaryOptions, 'tag', 'div');
if (($pagination = $this->dataProvider->getPagination()) !== false) {
$totalCount = $this->dataProvider->getTotalCount();
$begin = $pagination->getPage() * $pagination->pageSize + 1;
$end = $begin + $count - 1;
if ($begin > $end) {
$begin = $end;
}
$page = $pagination->getPage() + 1;
$pageCount = $pagination->pageCount;
if (($summaryContent = $this->summary) === null) {
return Html::tag($tag, Yii::t('yii', 'Showing <b>{begin, number}-{end, number}</b> of <b>{totalCount, number}</b> {totalCount, plural, one{item} other{items}}.', [
'begin' => $begin,
'end' => $end,
'count' => $count,
'totalCount' => $totalCount,
'page' => $page,
'pageCount' => $pageCount,
]), $summaryOptions);
}
} else {
$begin = $page = $pageCount = 1;
$end = $totalCount = $count;
if (($summaryContent = $this->summary) === null) {
return Html::tag($tag, Yii::t('yii', 'Total <b>{count, number}</b> {count, plural, one{item} other{items}}.', [
'begin' => $begin,
'end' => $end,
'count' => $count,
'totalCount' => $totalCount,
'page' => $page,
'pageCount' => $pageCount,
]), $summaryOptions);
}
}
if ($summaryContent === '') {
return '';
}
return Html::tag($tag, Yii::$app->getI18n()->format($summaryContent, [
'begin' => $begin,
'end' => $end,
'count' => $count,
'totalCount' => $totalCount,
'page' => $page,
'pageCount' => $pageCount,
], Yii::$app->language), $summaryOptions);
}
Defined in: yii\widgets\BaseListView::run()
Runs the widget.
public void run ( ) |
public function run()
{
if ($this->showOnEmpty || $this->dataProvider->getCount() > 0) {
$content = preg_replace_callback('/{\\w+}/', function ($matches) {
$content = $this->renderSection($matches[0]);
return $content === false ? $matches[0] : $content;
}, $this->layout);
} else {
$content = $this->renderEmpty();
}
$options = $this->options;
$tag = ArrayHelper::remove($options, 'tag', 'div');
echo Html::tag($tag, $content, $options);
}
Defined in: yii\base\Widget::setId()
Sets the ID of the widget.
public void setId ( $value ) | ||
$value | string |
Id of the widget. |
public function setId($value)
{
$this->_id = $value;
}
Defined in: yii\base\Widget::setView()
Sets the view object to be used by this widget.
public void setView ( $view ) | ||
$view | yii\base\View |
The view object that can be used to render views or view files. |
public function setView($view)
{
$this->_view = $view;
}
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 void trigger ( $name, yii\base\Event $event = null ) | ||
$name | string |
The event name |
$event | yii\base\Event|null |
The event instance. If not set, a default yii\base\Event object will be created. |
public function trigger($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], $event);
// stop further handling if the event is handled
if ($event->handled) {
return;
}
}
}
// invoke class-level attached handlers
Event::trigger($this, $name, $event);
}
Defined in: yii\base\Widget::widget()
Creates a widget instance and runs it.
The widget rendering result is returned by this method.
public static string widget ( $config = [] ) | ||
$config | array |
Name-value pairs that will be used to initialize the object properties |
return | string |
The rendering result of the widget. |
---|---|---|
throws | Throwable |
public static function widget($config = [])
{
ob_start();
ob_implicit_flush(false);
try {
/* @var $widget Widget */
$config['class'] = get_called_class();
$widget = Yii::createObject($config);
$out = '';
if ($widget->beforeRun()) {
$result = $widget->run();
$out = $widget->afterRun($result);
}
} catch (\Exception $e) {
// close the output buffer opened above if it has not been closed already
if (ob_get_level() > 0) {
ob_end_clean();
}
throw $e;
} catch (\Throwable $e) {
// close the output buffer opened above if it has not been closed already
if (ob_get_level() > 0) {
ob_end_clean();
}
throw $e;
}
return ob_get_clean() . $out;
}
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