Class yii\bootstrap\Collapse

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Inheritance	yii\bootstrap\Collapse » yii\bootstrap\Widget » yii\base\Widget » yii\base\Component » yii\base\BaseObject
Implements	yii\base\Configurable, yii\base\ViewContextInterface
Uses Traits	yii\bootstrap\BootstrapWidgetTrait
Available since version	2.0
Source Code	https://github.com/yiisoft/yii2-bootstrap/blob/master/Collapse.php

Collapse renders an accordion bootstrap javascript component.

For example:

echo Collapse::widget([
    'items' => [
        // equivalent to the above
        [
            'label' => 'Collapsible Group Item #1',
            'content' => 'Anim pariatur cliche...',
            // open its content by default
            'contentOptions' => ['class' => 'in']
        ],
        // another group item
        [
            'label' => 'Collapsible Group Item #1',
            'content' => 'Anim pariatur cliche...',
            'contentOptions' => [...],
            'options' => [...],
        ],
        // if you want to swap out .panel-body with .list-group, you may use the following
        [
            'label' => 'Collapsible Group Item #1',
            'content' => [
                'Anim pariatur cliche...',
                'Anim pariatur cliche...'
            ],
            'contentOptions' => [...],
            'options' => [...],
            'footer' => 'Footer' // the footer label in list-group
        ],
    ]
]);

Public Properties

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Property	Type	Description	Defined By
$autoCloseItems	boolean	Whether to close other items if an item is opened.	yii\bootstrap\Collapse
$autoIdPrefix	string	The prefix to the automatically generated widget IDs.	yii\base\Widget
$behaviors	yii\base\Behavior[]	List of behaviors attached to this component. This property is read-only.	yii\base\Component
$clientEvents	array	The event handlers for the underlying Bootstrap JS plugin.	yii\bootstrap\BootstrapWidgetTrait
$clientOptions	array	The options for the underlying Bootstrap JS plugin.	yii\bootstrap\BootstrapWidgetTrait
$counter	integer	A counter used to generate $id for widgets.	yii\base\Widget
$encodeLabels	boolean	Whether the labels for header items should be HTML-encoded.	yii\bootstrap\Collapse
$id	string\|null	ID of the widget. Note that the type of this property differs in getter and setter. See getId() and setId() for details.	yii\base\Widget
$itemToggleOptions	array	The HTML options for the item toggle tag.	yii\bootstrap\Collapse
$items	array	List of groups in the collapse widget.	yii\bootstrap\Collapse
$options	array	The HTML attributes for the widget container tag.	yii\bootstrap\Widget
$stack	yii\base\Widget[]	The widgets that are currently being rendered (not ended).	yii\base\Widget
$view	yii\web\View	The view object that can be used to render views or view files. Note that the type of this property differs in getter and setter. See getView() and setView() for details.	yii\base\Widget
$viewPath	string	The directory containing the view files for this widget. This property is read-only.	yii\base\Widget

Public Methods

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Method	Description	Defined By
__call()	Calls the named method which is not a class method.	yii\base\BaseObject
__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 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
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\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
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()		yii\bootstrap\BootstrapWidgetTrait
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\BaseObject
hasProperty()	Returns a value indicating whether a property is defined.	yii\base\BaseObject
init()	Initializes the widget.	yii\bootstrap\Collapse
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
renderFile()	Renders a view file.	yii\base\Widget
renderItem()	Renders a single collapsible item group	yii\bootstrap\Collapse
renderItems()	Renders collapsible items as specified on $items.	yii\bootstrap\Collapse
run()	Renders the widget.	yii\bootstrap\Collapse
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

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Method	Description	Defined By
registerClientEvents()	Registers JS event handlers that are listed in $clientEvents.	yii\bootstrap\BootstrapWidgetTrait
registerPlugin()	Registers a specific Bootstrap plugin and the related events	yii\bootstrap\BootstrapWidgetTrait

Events

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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

$autoCloseItems public property (available since version 2.0.7)

Whether to close other items if an item is opened. Defaults to true which causes an accordion effect. Set this to false to allow keeping multiple items open at once.

public boolean $autoCloseItems = true

$encodeLabels public property

Whether the labels for header items should be HTML-encoded.

public boolean $encodeLabels = true

$itemToggleOptions public property (available since version 2.0.8)

The HTML options for the item toggle tag. Key 'tag' might be used here for the tag name specification. For example:

[
    'tag' => 'div',
    'class' => 'custom-toggle',
]

public array $itemToggleOptions = []

$items public property

List of groups in the collapse widget. Each array element represents a single group with the following structure:

label: string, required, the group header label.
encode: bool, optional, whether this label should be HTML-encoded. This param will override global $this->encodeLabels param.
content: array|string|object, required, the content (HTML) of the group
options: array, optional, the HTML attributes of the group
contentOptions: optional, the HTML attributes of the group's content

Since version 2.0.7 you may also specify this property as key-value pairs, where the key refers to the label and the value refers to content. If value is a string it is interpreted as label. If it is an array, it is interpreted as explained above.

For example:

echo Collapse::widget([
    'items' => [
      'Introduction' => 'This is the first collapsable menu',
      'Second panel' => [
          'content' => 'This is the second collapsable menu',
      ],
      [
          'label' => 'Third panel',
          'content' => 'This is the third collapsable menu',
      ],
  ]
])

public array $items = []

Method Details

init() public method

Initializes the widget.

public void init ( )

renderItem() public method

Renders a single collapsible item group

public string renderItem ( $header, $item, $index )
$header	string	A label of the item group $items
$item	array	A single item from $items
$index	integer	The item index as each item group content must have an id
return	string	The rendering result
throws	yii\base\InvalidConfigException

renderItems() public method

Renders collapsible items as specified on $items.

public string renderItems ( )
return	string	The rendering result
throws	yii\base\InvalidConfigException	if label isn't specified

run() public method

Renders the widget.

public void run ( )