| Inheritance | yii\widgets\Spaceless » yii\base\Widget » yii\base\Component » yii\base\Object |
|---|---|
| Implements | yii\base\Configurable, yii\base\ViewContextInterface |
| Available since version | 2.0 |
| Source Code | https://github.com/yiisoft/yii2/blob/master/framework/widgets/Spaceless.php |
Spaceless widget removes whitespace characters between HTML tags. Whitespaces within HTML tags or in a plain text are always left untouched.
Usage example:
<body>
<?php Spaceless::begin(); ?>
<div class="nav-bar">
<!-- tags -->
</div>
<div class="content">
<!-- tags -->
</div>
<?php Spaceless::end(); ?>
</body>
This example will generate the following HTML:
<body>
<div class="nav-bar"><!-- tags --></div><div class="content"><!-- tags --></div></body>
This method is not designed for content compression (you should use gzip output compression to achieve it). Main intention is to strip out extra whitespace characters between HTML tags in order to avoid browser rendering quirks in some circumstances (e.g. newlines between inline-block elements).
Note, never use this method with pre or textarea tags. It's not that trivial to deal with such tags as it may seem at first sight. For this case you should consider using HTML Tidy Project instead.
See also http://tidy.sourceforge.net/.
| Property | Type | Description | Defined By |
|---|---|---|---|
| $autoIdPrefix | string | The prefix to the automatically generated widget IDs. | yii\base\Widget |
| $behaviors | yii\base\Behavior[] | List of behaviors attached to this component | yii\base\Component |
| $counter | integer | A counter used to generate $id for widgets. | yii\base\Widget |
| $id | string | ID of the widget. | yii\base\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. | yii\base\Widget |
| $viewPath | string | The directory containing the view files for this widget. | yii\base\Widget |
| Method | Description | Defined By |
|---|---|---|
| __call() | Calls the named method which is not a class method. | yii\base\Object |
| __clone() | This method is called after the object is created by cloning an existing one. | yii\base\Component |
| __construct() | Constructor. | yii\base\Object |
| __get() | Returns the value of an object property. | yii\base\Object |
| __isset() | Checks if a property is set, i.e. defined and not null. | yii\base\Object |
| __set() | Sets value of an object property. | yii\base\Object |
| __unset() | Sets an object property to null. | yii\base\Object |
| 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\Object |
| canSetProperty() | Returns a value indicating whether a property can be set. | yii\base\Object |
| className() | Returns the fully qualified name of this class. | yii\base\Object |
| 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\Object |
| hasProperty() | Returns a value indicating whether a property is defined. | yii\base\Object |
| init() | Starts capturing an output to be cleaned from whitespace characters between HTML tags. | yii\widgets\Spaceless |
| 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 |
| run() | Marks the end of content to be cleaned from whitespace characters between HTML tags. | yii\widgets\Spaceless |
| 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 |
| 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 |
Starts capturing an output to be cleaned from whitespace characters between HTML tags.
| public void init ( ) |
|---|
Marks the end of content to be cleaned from whitespace characters between HTML tags.
Stops capturing an output and echoes cleaned result.
| public void run ( ) |
|---|
© 2008–2017 by Yii Software LLC
Licensed under the three clause BSD license.
http://www.yiiframework.com/doc-2.0/yii-widgets-spaceless.html