# Class yii\grid\CheckboxColumn

Inheritance | yii\grid\CheckboxColumn » yii\grid\Column » yii\base\BaseObject
Implements | yii\base\Configurable
Available since version | 2.0
Source Code | https://github.com/yiisoft/yii2/blob/master/framework/grid/CheckboxColumn.php

CheckboxColumn displays a column of checkboxes in a grid view.

To add a CheckboxColumn to the yii\grid\GridView, add it to the columns configuration as follows:

    'columns' => [
        // ...
        [
            'class' => 'yii\grid\CheckboxColumn',
            // you may configure additional properties here
        ],
    ]

Users may click on the checkboxes to select rows of the grid. The selected rows may be obtained by calling the following JavaScript code:

    var keys = $('#grid').yiiGridView('getSelectedRows');
    // keys is an array consisting of the keys associated with the selected rows

For more details and usage information on CheckboxColumn, see the guide article on data widgets.

## Public Properties

Hide inherited properties

Property | Type | Description | Defined By
--- | --- | --- | ---
$checkboxOptions | array|Closure | The HTML attributes for checkboxes. | yii\grid\CheckboxColumn
$content | callable | This is a callable that will be used to generate the content of each cell. | yii\grid\Column
$contentOptions | array|Closure | The HTML attributes for the data cell tag. | yii\grid\Column
$cssClass | string | The css class that will be used to find the checkboxes. | yii\grid\CheckboxColumn
$filterOptions | array | The HTML attributes for the filter cell tag. | yii\grid\Column
$footer | string | The footer cell content. | yii\grid\Column
$footerOptions | array | The HTML attributes for the footer cell tag. | yii\grid\Column
$grid | yii\grid\GridView | The grid view object that owns this column. | yii\grid\Column
$header | string | The header cell content. | yii\grid\Column
$headerOptions | array | The HTML attributes for the header cell tag. | yii\grid\Column
$multiple | boolean | Whether it is possible to select multiple rows. | yii\grid\CheckboxColumn
$name | string | The name of the input checkbox input fields. | yii\grid\CheckboxColumn
$options | array | The HTML attributes for the column group tag. | yii\grid\Column
$visible | boolean | Whether this column is visible. | yii\grid\Column

## Public Methods

Hide inherited methods

Method | Description | Defined By
--- | --- | ---
__call() | Calls the named method which is not a class method. | yii\base\BaseObject
__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
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
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 object. | yii\grid\CheckboxColumn
registerClientScript() | Registers the needed JavaScript. | yii\grid\CheckboxColumn
renderDataCell() | Renders a data cell. | yii\grid\Column
renderFilterCell() | Renders the filter cell. | yii\grid\Column
renderFooterCell() | Renders the footer cell. | yii\grid\Column
renderHeaderCell() | Renders the header cell. | yii\grid\Column

## Protected Methods

Hide inherited methods

Method | Description | Defined By
--- | --- | ---
getHeaderCellLabel() | Returns header cell label. | yii\grid\Column
getHeaderCheckBoxName() | Returns header checkbox name. | yii\grid\CheckboxColumn
renderDataCellContent() | Renders the data cell content. | yii\grid\CheckboxColumn
renderFilterCellContent() | Renders the filter cell content. | yii\grid\Column
renderFooterCellContent() | Renders the footer cell content. | yii\grid\Column
renderHeaderCellContent() | Renders the header cell content. | yii\grid\CheckboxColumn

## Property Details

$checkboxOptions public property

The HTML attributes for checkboxes. This can either be an array of attributes or an anonymous function (Closure) that returns such an array. The signature of the function should be the following: `function ($model, $key, $index, $column)`. Where `$model`, `$key`, and `$index` refer to the model, key and index of the row currently being rendered and `$column` is a reference to the yii\grid\CheckboxColumn object. A function may be used to assign different attributes to different rows based on the data in that row. Specifically if you want to set a different value for the checkbox you can use this option in the following way (in this example using the `name` attribute of the model):

    'checkboxOptions' => function ($model, $key, $index, $column) {
        return ['value' => $model->name];
    }

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

public array|Closure $checkboxOptions = []
$cssClass public property (available since version 2.0.9)

The css class that will be used to find the checkboxes.

public string $cssClass = null
$multiple public property

Whether it is possible to select multiple rows. Defaults to `true`.

public boolean $multiple = true
$name public property

The name of the input checkbox input fields. This will be appended with `[]` to ensure it is an array.

public string $name = 'selection'

## Method Details

getHeaderCheckBoxName() protected method (available since version 2.0.8)

Returns header checkbox name.

protected string getHeaderCheckBoxName ( )
return | string | Header checkbox name

init() public method

Initializes the object.

This method is invoked at the end of the constructor after the object is initialized with the given configuration.

public void init ( )
throws | yii\base\InvalidConfigException | if $name is not set.

registerClientScript() public method (available since version 2.0.8)

Registers the needed JavaScript.

public void registerClientScript ( )

renderDataCellContent() protected method

Renders the data cell content.

protected string renderDataCellContent ( $model, $key, $index )
$model | mixed | The data model
$key | mixed | The key associated with the data model
$index | integer | The zero-based index of the data model among the models array returned by yii\grid\GridView::$dataProvider.
return | string | The rendering result

renderHeaderCellContent() protected method

Renders the header cell content.

The default implementation simply renders $header. This method may be overridden to customize the rendering of the header cell.

protected string renderHeaderCellContent ( )
return | string | The rendering result