introduced DataColumn::label property

framework/yii/grid/DataColumn.php

@@ -28,6 +28,14 @@ class DataColumn extends Column
 	 */
 	public $attribute;
 	/**
+	 * @var string label to be displayed in the [[header|header cell]] and also to be used as the sorting
+	 * link label when sorting is enabled for this column.
+	 * If it is not set and the models provided by the GridViews data provider are instances
+	 * of [[ActiveRecord]], the label will be determined via [[ActiveRecord::getAttributeLabel()]].
+	 * Otherwise [[yii\helpers\Inflector::camel2words]] will be used to get a label.
+	 */
+	public $label;
+	/**
 	 * @var \Closure an anonymous function that returns the value to be displayed for every data model.
 	 * If this is not set, `$model[$attribute]` will be used to obtain the value.
 	 */
@@ -46,6 +54,11 @@ class DataColumn extends Column
 	 */
 	public $enableSorting = true;
 	/**
+	 * @var array the HTML attributes for the link tag in the header cell
+	 * generated by [[Sort::link]] when sorting is enabled for this column.
+	 */
+	public $sortLinkOptions = array();
+	/**
 	 * @var string|array|boolean the HTML code representing a filter input (e.g. a text field, a dropdown list)
 	 * that is used for this data column. This property is effective only when [[GridView::filterModel]] is set.
 	 *
@@ -59,39 +72,37 @@ class DataColumn extends Column
 
 	protected function renderHeaderCellContent()
 	{
+		if ($this->header === null) {
 			$provider = $this->grid->dataProvider;
-		if ($this->attribute !== null && $this->enableSorting &&
-			($sort = $provider->getSort()) !== false && $sort->hasAttribute($this->attribute)) {
 
-			$label = $this->getHeaderLabel();
-			if (($this->header !== null || !isset($sort->attributes[$this->attribute]['label'])) && trim($label) !== '') {
-				$sort->attributes[$this->attribute]['label'] = $label;
-			}
-			return $sort->link($this->attribute);
-		} elseif ($this->header === null) {
-			return $this->getHeaderLabel();
-		} else {
-			return parent::renderHeaderCellContent();
-		}
-	}
-
-	protected function getHeaderLabel()
-	{
-		$provider = $this->grid->dataProvider;
-		if ($this->header !== null) {
-			return $this->header;
-		}
+			if ($this->label === null) {
 				if ($provider instanceof ActiveDataProvider && $provider->query instanceof ActiveQuery) {
 					/** @var Model $model */
 					$model = new $provider->query->modelClass;
-			return $model->getAttributeLabel($this->attribute);
-		}
+					$label = $model->getAttributeLabel($this->attribute);
+				} else {
 					$models = $provider->getModels();
 					if (($model = reset($models)) instanceof Model) {
 						/** @var Model $model */
-			return $model->getAttributeLabel($this->attribute);
+						$label = $model->getAttributeLabel($this->attribute);
+					} else {
+						$label = Inflector::camel2words($this->attribute);
+					}
+				}
+			} else {
+				$label = $this->label;
+			}
+
+			if ($this->attribute !== null && $this->enableSorting &&
+				($sort = $provider->getSort()) !== false && $sort->hasAttribute($this->attribute)) {
+
+				return $sort->link($this->attribute, Html::encode($label), $this->sortLinkOptions);
+			} else {
+				return Html::encode($label);
+			}
+		} else {
+			return parent::renderHeaderCellContent();
 		}
-		return Inflector::camel2words($this->attribute);
 	}
 
 	protected function renderFilterCellContent()

framework/yii/grid/GridView.php

@@ -108,7 +108,7 @@ class GridView extends ListViewBase
 	 *         'class' => DataColumn::className(),
 	 *         'attribute' => 'name',
 	 *         'format' => 'text',
-	 *         'header' => 'Name',
+	 *         'label' => 'Name',
 	 *     ),
 	 *     array(
 	 *         'class' => CheckboxColumn::className(),
@@ -119,9 +119,9 @@ class GridView extends ListViewBase
 	 * If a column is of class [[DataColumn]], the "class" element can be omitted.
 	 *
 	 * As a shortcut format, a string may be used to specify the configuration of a data column
-	 * which only contains "attribute", "format", and/or "header" options: `"attribute:format:header"`.
+	 * which only contains "attribute", "format", and/or "label" options: `"attribute:format:label"`.
 	 * For example, the above "name" column can also be specified as: `"name:text:Name"`.
-	 * Both "format" and "header" are optional. They will take default values if absent.
+	 * Both "format" and "label" are optional. They will take default values if absent.
 	 */
 	public $columns = array();
 	/**
@@ -372,7 +372,7 @@ class GridView extends ListViewBase
 	}
 
 	/**
-	 * Creates a [[DataColumn]] object based on a string in the format of "attribute:format:header".
+	 * Creates a [[DataColumn]] object based on a string in the format of "attribute:format:label".
 	 * @param string $text the column specification string
 	 * @return DataColumn the column instance
 	 * @throws InvalidConfigException if the column specification is invalid
@@ -380,14 +380,14 @@ class GridView extends ListViewBase
 	protected function createDataColumn($text)
 	{
 		if (!preg_match('/^([\w\.]+)(:(\w*))?(:(.*))?$/', $text, $matches)) {
-			throw new InvalidConfigException('The column must be specified in the format of "attribute", "attribute:format" or "attribute:format:header');
+			throw new InvalidConfigException('The column must be specified in the format of "attribute", "attribute:format" or "attribute:format:label');
 		}
 		return Yii::createObject(array(
 			'class' => $this->dataColumnClass ?: DataColumn::className(),
 			'grid' => $this,
 			'attribute' => $matches[1],
 			'format' => isset($matches[3]) ? $matches[3] : 'text',
-			'header' => isset($matches[5]) ? $matches[5] : null,
+			'label' => isset($matches[5]) ? $matches[5] : null,
 		));
 	}