Class yii\bootstrap4\ButtonDropdown

Inheritanceyii\bootstrap4\ButtonDropdown » yii\bootstrap4\Widget » yii\base\Widget
Uses Traitsyii\bootstrap4\BootstrapWidgetTrait
Source Code https://github.com/yiisoft/yii2-bootstrap4/blob/master/src/ButtonDropdown.php

ButtonDropdown renders a group or split button dropdown bootstrap component.

For example,

// a button group using Dropdown widget
echo ButtonDropdown::widget([
    'label' => 'Action',
    'dropdown' => [
        'items' => [
            ['label' => 'DropdownA', 'url' => '/'],
            ['label' => 'DropdownB', 'url' => '#'],
        ],
    ],
]);

See also:

Public Properties

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PropertyTypeDescriptionDefined By
$buttonOptions array The HTML attributes of the button. yii\bootstrap4\ButtonDropdown
$clientEvents array The event handlers for the underlying Bootstrap JS plugin. yii\bootstrap4\BootstrapWidgetTrait
$clientOptions array The options for the underlying Bootstrap JS plugin. yii\bootstrap4\BootstrapWidgetTrait
$direction string The drop-direction of the widget Possible values are 'left', 'right', 'up', or 'down' (default) yii\bootstrap4\ButtonDropdown
$dropdown array The configuration array for yii\bootstrap4\Dropdown. yii\bootstrap4\ButtonDropdown
$dropdownClass string Name of a class to use for rendering dropdowns withing this widget. yii\bootstrap4\ButtonDropdown
$encodeLabel boolean Whether the label should be HTML-encoded. yii\bootstrap4\ButtonDropdown
$label string The button label yii\bootstrap4\ButtonDropdown
$options array The HTML attributes for the container tag. yii\bootstrap4\ButtonDropdown
$renderContainer boolean Whether to render the container using the $options as HTML attributes. yii\bootstrap4\ButtonDropdown
$split boolean Whether to display a group of split-styled button group. yii\bootstrap4\ButtonDropdown
$tagName string The tag to use to render the button yii\bootstrap4\ButtonDropdown

Protected Methods

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MethodDescriptionDefined By
registerClientEvents() Registers JS event handlers that are listed in $clientEvents. yii\bootstrap4\BootstrapWidgetTrait
registerPlugin() Registers a specific Bootstrap plugin and the related events yii\bootstrap4\BootstrapWidgetTrait
renderButton() Generates the button dropdown. yii\bootstrap4\ButtonDropdown
renderDropdown() Generates the dropdown menu. yii\bootstrap4\ButtonDropdown

Constants

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ConstantValueDescriptionDefined By
DIRECTION_DOWN 'down' The css class part of dropdown yii\bootstrap4\ButtonDropdown
DIRECTION_LEFT 'left' The css class part of dropleft yii\bootstrap4\ButtonDropdown
DIRECTION_RIGHT 'right' The css class part of dropright yii\bootstrap4\ButtonDropdown
DIRECTION_UP 'up' The css class part of dropup yii\bootstrap4\ButtonDropdown

Property Details

$buttonOptions public property

The HTML attributes of the button.

See also \yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered.

public array $buttonOptions = []
$direction public property

The drop-direction of the widget

Possible values are 'left', 'right', 'up', or 'down' (default)

public string $direction self::DIRECTION_DOWN
$dropdown public property

The configuration array for yii\bootstrap4\Dropdown.

public array $dropdown = []
$dropdownClass public property

Name of a class to use for rendering dropdowns withing this widget. Defaults to yii\bootstrap4\Dropdown.

public string $dropdownClass 'yii\bootstrap4\Dropdown'
$encodeLabel public property

Whether the label should be HTML-encoded.

public boolean $encodeLabel true
$label public property

The button label

public string $label 'Button'
$options public property

The HTML attributes for the container tag. The following special options are recognized:

  • tag: string, defaults to "div", the name of the container tag.

See also \yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered.

public array $options = []
$renderContainer public property

Whether to render the container using the $options as HTML attributes. If set to false, the container element enclosing the button and dropdown will NOT be rendered.

public boolean $renderContainer true
$split public property

Whether to display a group of split-styled button group.

public boolean $split false
$tagName public property

The tag to use to render the button

public string $tagName 'button'

Method Details

init() public method

Initializes the widget.

This method will register the bootstrap asset bundle. If you override this method, make sure you call the parent implementation first.

public void init ( )
renderButton() protected method

Generates the button dropdown.

protected string renderButton ( )
return string

The rendering result.

throws Exception
renderDropdown() protected method

Generates the dropdown menu.

protected string renderDropdown ( )
return string

The rendering result.

throws Exception
run() public method

public void run ( )
throws Exception