- Fix

common/modules/cases/controllers/CasesAdminController.php

@@ -75,6 +75,7 @@ class CasesAdminController extends AdminController {
 
         if (Yii::$app->request->isPost)
         {
+            var_dump($_POST); die;
             $transaction = Yii::$app->db->beginTransaction();
 
             try

common/modules/cases/views/cases-admin/_form.php

@@ -27,8 +27,7 @@ $blocks = \common\modules\content\models\CoBlocks::find()->all();
         /** @var \common\modules\content\models\CoCategory $category */
         $category = \common\modules\content\models\CoCategory::findOne($id);
         if (!is_null($category)) {
-            echo $form->field($model, 'category_id')->hiddenInput(['value' => $id]);
-            echo Html::input('text', 'category', $category->name, ['disabled' => true, 'class' => 'form-control']);
+            echo Html::hiddenInput('CoContent[category]', $category->name);
         }
         ?>