用户报考列表添加优化

@@ -194,7 +194,9 @@ class ThirdStudy extends Backend
                         $classes_ids = Db::name('classes')->where('study_id', $res['study_id'])->where('is_major', 1)->column('id');
                         foreach ($classes_ids as $v) {
                             $res['class_id'] = $v;
-                            Db::name('study_class')->insertGetId($res);
+                            if(!Db::name('study_class')->where('third_id',$params['third_id'])->where('class_id',$v)->find()){
+                                Db::name('study_class')->insertGetId($res);
+                            }
                         }
                     }
                     $result = $this->model->allowField(true)->saveAll($paramsAll);