Class yii\widgets\Spaceless

Inheritanceyii\widgets\Spaceless » yii\base\Widget » yii\base\Component » yii\base\BaseObject
Implementsyii\base\Configurable, yii\base\ViewContextInterface
Available since version2.0
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/.

Public Properties

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PropertyTypeDescriptionDefined By
$autoIdPrefix string The prefix to the automatically generated widget IDs. yii\base\Widget
$counter integer A counter used to generate \yii\base\id for widgets. yii\base\Widget
$stack yii\base\Widget[] The widgets that are currently being rendered (not ended). yii\base\Widget

Public Methods

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MethodDescriptionDefined 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() 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\BaseObject
hasProperty() Returns a value indicating whether a property is defined. yii\base\BaseObject
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

Events

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EventTypeDescriptionDefined 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

Method Details

init() public method

Starts capturing an output to be cleaned from whitespace characters between HTML tags.

public void init ( )
run() public method

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 ( )