Merge pull request #3164 from ivan-kolmychek/3154-gridview-filter-error-indication

framework/grid/DataColumn.php

@@ -143,6 +143,9 @@ class DataColumn extends Column
             return $this->filter;
         } elseif ($this->filter !== false && $this->grid->filterModel instanceof Model &&
                   $this->attribute !== null && $this->grid->filterModel->isAttributeActive($this->attribute)) {
+            if ($this->grid->filterModel->hasErrors($this->attribute)) {
+                 Html::addCssClass($this->filterOptions, 'has-error');
+            }
             if (is_array($this->filter)) {
                 $options = array_merge(['prompt' => ''], $this->filterInputOptions);
                 return Html::activeDropDownList($this->grid->filterModel, $this->attribute, $this->filter, $options);

framework/grid/GridView.php

@@ -15,6 +15,8 @@ use yii\helpers\Url;
 use yii\helpers\Html;
 use yii\helpers\Json;
 use yii\widgets\BaseListView;
+use yii\helpers\ArrayHelper;
+use yii\base\Model;
 
 /**
  * The GridView widget is used to display data in a grid.
@@ -174,6 +176,17 @@ class GridView extends BaseListView
      */
     public $filterRowOptions = ['class' => 'filters'];
 
+    /**
+     * @var string the layout that determines how different sections of the list view should be organized.
+     * The following tokens will be replaced with the corresponding section contents:
+     *
+     * - `{summary}`: the summary section. See [[renderSummary()]].
+     * - `{error}`: the filter model errors. See [[renderErrors()]].
+     * - `{items}`: the list items. See [[renderItems()]].
+     * - `{sorter}`: the sorter. See [[renderSorter()]].
+     * - `{pager}`: the pager. See [[renderPager()]].
+     */
+    public $layout = "{summary}\n{errors}\n{items}\n{pager}";
 
     /**
      * Initializes the grid view.
@@ -214,6 +227,34 @@ class GridView extends BaseListView
     }
     
     /**
+     * @inheritdoc
+     */
+    public function renderErrors()
+    {
+        if ($this->filterModel instanceof Model && $this->filterModel->hasErrors()) 
+        {
+            $errorsList = [];
+            foreach($this->filterModel->errors as $attribute => $errors) 
+            {
+                    $errorsList = ArrayHelper::merge($errorsList, $errors); 
+            }
+            return Html::tag('div', Html::ul($errorsList, ['class' => 'help-block']), ['class' => 'has-error']);
+        }
+        
+        return '';
+    }
+    
+    public function renderSection($name)
+    {
+        switch ($name) {
+            case "{errors}":
+                return $this->renderErrors();
+            default:
+                return parent::renderSection($name);
+        }
+    }
+    
+    /**
      * Returns the options for the grid view JS widget.
      * @return array the options
      */