Some minimal doc blocks changes for consitency

framework/behaviors/AttributeBehavior.php

@@ -21,14 +21,16 @@ use yii\base\Event;
  * attribute(s). For example,
  *
  * ~~~
+ * use yii\behaviors\AttributeBehavior;
+ *
  * public function behaviors()
  * {
  *     return [
  *         'attributeStamp' => [
- *             'class' => 'yii\behaviors\AttributeBehavior',
+ *             'class' => AttributeBehavior::className(),
  *             'attributes' => [
- *                 ActiveRecord::EVENT_BEFORE_INSERT => ['attribute1'],
- *                 ActiveRecord::EVENT_BEFORE_UPDATE => ['attribute2'],
+ *                 ActiveRecord::EVENT_BEFORE_INSERT => 'attribute1',
+ *                 ActiveRecord::EVENT_BEFORE_UPDATE => 'attribute2',
  *             ],
  *             'value' => function ($event) {
  *                 return 'some value';

framework/behaviors/BlameableBehavior.php

@@ -39,8 +39,8 @@ use yii\db\BaseActiveRecord;
  *         [
  *             'class' => BlameableBehavior::className(),
  *             'attributes' => [
- *                 ActiveRecord::EVENT_BEFORE_INSERT => ['creator_id'],
- *                 ActiveRecord::EVENT_BEFORE_UPDATE => ['updater_id'],
+ *                 ActiveRecord::EVENT_BEFORE_INSERT => 'author_id',
+ *                 ActiveRecord::EVENT_BEFORE_UPDATE => 'updater_id',
  *             ],
  *         ],
  *     ];
@@ -63,7 +63,7 @@ class BlameableBehavior extends AttributeBehavior
 	 */
 	public $attributes = [
 		BaseActiveRecord::EVENT_BEFORE_INSERT => ['created_by', 'updated_by'],
-		BaseActiveRecord::EVENT_BEFORE_UPDATE => ['updated_by'],
+		BaseActiveRecord::EVENT_BEFORE_UPDATE => 'updated_by',
 	];
 	/**
 	 * @var callable the value that will be assigned to the attributes. This should be a valid

framework/behaviors/TimestampBehavior.php

@@ -34,7 +34,6 @@ use yii\db\Expression;
  * you may configure the [[attributes]] and [[value]] properties like the following:
  *
  * ```php
- * use yii\behaviors\TimestampBehavior;
  * use yii\db\Expression;
  *
  * public function behaviors()
@@ -43,8 +42,8 @@ use yii\db\Expression;
  *         'timestamp' => [
  *             'class' => TimestampBehavior::className(),
  *             'attributes' => [
- *                 ActiveRecord::EVENT_BEFORE_INSERT => ['creation_time'],
- *                 ActiveRecord::EVENT_BEFORE_UPDATE => ['update_time'],
+ *                 ActiveRecord::EVENT_BEFORE_INSERT => 'creation_time',
+ *                 ActiveRecord::EVENT_BEFORE_UPDATE => 'update_time',
  *             ],
  *             'value' => new Expression('NOW()'),
  *         ],
@@ -74,7 +73,7 @@ class TimestampBehavior extends AttributeBehavior
 	 */
 	public $attributes = [
 		BaseActiveRecord::EVENT_BEFORE_INSERT => ['created_at', 'updated_at'],
-		BaseActiveRecord::EVENT_BEFORE_UPDATE => ['updated_at'],
+		BaseActiveRecord::EVENT_BEFORE_UPDATE => 'updated_at',
 	];
 	/**
 	 * @var callable|Expression The expression that will be used for generating the timestamp.