fixed gridview documentation

docs/guide/output-data-widgets.md

@@ -122,11 +122,11 @@ grid columns.
 - `visible` is the column should be visible.
 - `content` allows you to pass a valid PHP callback that will return data for a row. The format is the following:
 
-```php
-function ($model, $key, $index, $grid) {
-    return 'a string';
-}
-```
+  ```php
+  function ($model, $key, $index, $column) {
+      return 'a string';
+  }
+  ```
 
 You may specify various container HTML options passing arrays to:
 

framework/grid/Column.php

@@ -32,7 +32,8 @@ class Column extends Object
      */
     public $footer;
     /**
-     * @var callable
+     * @var callable This is a callable that will be used to generated the content of each cell.
+     * The signature of the function should be the following: `function ($model, $key, $index, $column)`.
      */
     public $content;
     /**
@@ -51,8 +52,8 @@ class Column extends Object
     public $headerOptions = [];
     /**
      * @var array|\Closure the HTML attributes for the data cell tag. This can either be an array of
-     * attributes or an anonymous function that ([[Closure]]) that returns such an array.
-     * The signature of the function should be the following: `function ($model, $key, $index, $gridView)`.
+     * attributes or an anonymous function ([[Closure]]) that returns such an array.
+     * The signature of the function should be the following: `function ($model, $key, $index, $column)`.
      * A function may be used to assign different attributes to different rows based on the data in that row.
      *
      * @see \yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered.
@@ -69,6 +70,7 @@ class Column extends Object
      */
     public $filterOptions = [];
 
+
     /**
      * Renders the header cell.
      */

framework/grid/DataColumn.php

@@ -51,7 +51,7 @@ class DataColumn extends Column
     public $label;
     /**
      * @var string|\Closure an anonymous function that returns the value to be displayed for every data model.
-     * The signature of this function is `function ($model, $key, $index, $widget)`.
+     * The signature of this function is `function ($model, $key, $index, $column)`.
      * If this is not set, `$model[$attribute]` will be used to obtain the value.
      *
      * You may also set this property to a string representing the attribute name to be displayed in this column.