Class yii\bootstrap4\Breadcrumbs

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

Breadcrumbs represents a bootstrap 4 version of \yii\widgets\Breadcrumbs. It displays a list of links indicating the position of the current page in the whole site hierarchy.

To use Breadcrumbs, you need to configure its $links property, which specifies the links to be displayed. For example,

echo Breadcrumbs::widget([
    'links' => isset($this->params['breadcrumbs']) ? $this->params['breadcrumbs'] : [],
    'options' => [],
]);

See also http://getbootstrap.com/javascript/#buttons.

Public Properties

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PropertyTypeDescriptionDefined By
$activeItemTemplate string The template used to render each active item in the breadcrumbs. yii\bootstrap4\Breadcrumbs
$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
$encodeLabels boolean Whether to HTML-encode the link labels. yii\bootstrap4\Breadcrumbs
$itemTemplate string The template used to render each inactive item in the breadcrumbs. yii\bootstrap4\Breadcrumbs
$navOptions array The HTML attributes for the widgets nav container tag. yii\bootstrap4\Breadcrumbs
$options array The HTML attributes for the widget container tag. yii\bootstrap4\Widget
$tag string The name of the breadcrumb container tag. yii\bootstrap4\Breadcrumbs

Public Methods

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MethodDescriptionDefined By
getView() yii\bootstrap4\BootstrapWidgetTrait
init() Initializes the widget. yii\bootstrap4\Breadcrumbs
run() Renders the widget. yii\bootstrap4\Breadcrumbs

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
renderItem() Renders a single breadcrumb item. yii\bootstrap4\Breadcrumbs

Property Details

$activeItemTemplate public property

The template used to render each active item in the breadcrumbs. The token {link} will be replaced with the actual HTML link for each active item.

public string $activeItemTemplate "<li class=\"breadcrumb-item active\" aria-current=\"page\">{link}</li>\n"
$encodeLabels public property

Whether to HTML-encode the link labels.

public boolean $encodeLabels true

The first hyperlink in the breadcrumbs (called home link). Please refer to $links on the format of the link. If this property is not set, it will default to a link pointing to \yii\web\Application::homeUrl with the label 'Home'. If this property is false, the home link will not be rendered.

public array $homeLink null
$itemTemplate public property

The template used to render each inactive item in the breadcrumbs. The token {link} will be replaced with the actual HTML link for each inactive item.

public string $itemTemplate "<li class=\"breadcrumb-item\">{link}</li>\n"

List of links to appear in the breadcrumbs. If this property is empty, the widget will not render anything. Each array element represents a single link in the breadcrumbs with the following structure:

[
    'label' => 'label of the link',  // required
    'url' => 'url of the link',      // optional, will be processed by Url::to()
    'template' => 'own template of the item', // optional, if not set $this->itemTemplate will be used
]
public array $links = []
$navOptions public property

The HTML attributes for the widgets nav container tag.

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

public array $navOptions = ['aria-label' => 'breadcrumb']
$tag public property

The name of the breadcrumb container tag.

public string $tag 'ol'

Method Details

init() public method

Initializes the widget.

If you override this method, make sure you call the parent implementation first.

public void init ( )
renderItem() protected method

Renders a single breadcrumb item.

protected string renderItem ( $link, $template )
$link array

The link to be rendered. It must contain the "label" element. The "url" element is optional.

$template string

The template to be used to rendered the link. The token "{link}" will be replaced by the link.

return string

The rendering result

throws \yii\base\InvalidConfigException

if $link does not have "label" element.

run() public method

Renders the widget.

public void run ( )
throws \yii\base\InvalidConfigException