第三方媒资编号不能为空

app/Http/Controllers/Api/MediaController.php

@@ -181,7 +181,7 @@ class MediaController extends Controller
 
 
             $params = array(
-                'media_id'  => 'mda-'.generateRandomNum(16),
+                'media_id'  => MediaModel::getMediaId(),
                 'media_type'=> '5efa9cb5d16f5a214671fd86',//默认，中公网校
                 'start_time'=> $data_time,
                 'end_time'  => $data_time,

app/Model/MediaModel.php

@@ -798,7 +798,32 @@ class MediaModel extends Eloquent
 
     }
 
+    /**
+     * @return string
+     * @throws DatabaseException
+     */
+    public static function getMediaId(){
+
+        try{
+            $i = 0;
+            do {
+                $media_id = "mda-".generateRandomNum(16);
+                $media = MediaModel::find($media_id);
+                $i ++;
+
+            } while ($i < 3 && !empty($media) );
+
 
+            if ($i == 3){
+                throw new \Exception('获取媒资编号失败');
+            }
+
+        }catch (\Exception $exception){
+            throw new DatabaseException($exception->getMessage());
+        }
+
+        return 'mda-'.$media_id;
+    }
 
 
 }