# Class yii\grid\Column

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

Column is the base class of all yii\grid\GridView column classes.

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

## Public Properties

Hide inherited properties

Property | Type | Description | Defined By
--- | --- | --- | ---
$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
$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
$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

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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\base\BaseObject
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

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Method | Description | Defined By
--- | --- | ---
getHeaderCellLabel() | Returns header cell label. | yii\grid\Column
renderDataCellContent() | Renders the data cell content. | yii\grid\Column
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\Column

## Property Details

$content public property

This is a callable that will be used to generate the content of each cell. 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\Column object.

public callable $content = null
$contentOptions public property

The HTML attributes for the data cell tag. 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\Column object. A function may be used to assign different attributes to different rows based on the data in that row.

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

public array|Closure $contentOptions = []
$filterOptions public property

The HTML attributes for the filter cell tag.

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

public array $filterOptions = []
$footer public property

The footer cell content. Note that it will not be HTML-encoded.

public string $footer = null
$footerOptions public property

The HTML attributes for the footer cell tag.

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

public array $footerOptions = []
$grid public property

The grid view object that owns this column.

public yii\grid\GridView $grid = null
$header public property

The header cell content. Note that it will not be HTML-encoded.

public string $header = null
$headerOptions public property

The HTML attributes for the header cell tag.

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

public array $headerOptions = []
$options public property

The HTML attributes for the column group tag.

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

public array $options = []
$visible public property

Whether this column is visible. Defaults to true.

public boolean $visible = true

## Method Details

getHeaderCellLabel() protected method (available since version 2.0.8)

Returns header cell label.

This method may be overridden to customize the label of the header cell.

protected string getHeaderCellLabel ( )
return | string | Label

renderDataCell() public method

Renders a data cell.

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

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

renderFilterCell() public method

Renders the filter cell.

public void renderFilterCell ( )

renderFilterCellContent() protected method

Renders the filter cell content.

The default implementation simply renders a space. This method may be overridden to customize the rendering of the filter cell (if any).

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

Renders the footer cell.

public void renderFooterCell ( )

Renders the footer cell content.

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

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

renderHeaderCell() public method

Renders the header cell.

public void renderHeaderCell ( )

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