修复发布课程界面添加讲师时的错误。

src/common/models/Teacher.php

@@ -45,8 +45,10 @@ class Teacher extends ActiveRecord
             [['name', 'class_id'], 'required'],
             [['user_id', 'created_at', 'updated_at'], 'integer'],
             [['intro'], 'string'],
+            [['intro'], 'default', 'value'=>''],
             [['name'], 'string', 'min'=>2, 'max' => 64],
             [['avatar'], 'string', 'max' => 100],
+            [['avatar'], 'default', 'value' => ''],
         ];
     }
 

src/frontend/controllers/ClassesInfoController.php

@@ -90,7 +90,7 @@ class ClassesInfoController extends \yii\web\Controller
             if (!$agreement) {
                 $model->addError('agreement', '必须同意使用协议');
             } elseif ($model->validate() && $model->save()) {
-                return $this->redirect('/classes-info');
+                return $this->render('@app/views/site/success', ['message'=>'您已成功提交课堂申请,我们将尽快为您审核通过。']);
             }
         }