修复 bug YH-5568

@@ -391,7 +391,12 @@ class LiveController extends BaseController
         //图片上传组件
         $picUploader = \backend\widgets\UploadImage::self()->single('pic',$model->pic);
         $backgroundUploader = \backend\widgets\UploadImage::self()->single('background_pic',$model->background_pic);
-        $sharePicUploader = \backend\widgets\UploadImage::self()->single('share_pic',$post['share_pic'] ? :'');
+        if($share = Share::getShareByRoomId($model->room_id)){
+            $share_pic = $share->pic;
+        }else{
+            $share_pic = '';
+        }
+        $sharePicUploader = \backend\widgets\UploadImage::self()->single('share_pic',$share_pic);
 
         $roomShare = [];
         if($shareModel = Share::findOne(['obj_id'=>$model->room_id,'type'=>Params::LIVE_SHARE_TYPE])) {

@@ -94,4 +94,9 @@ class Share extends \yii\db\ActiveRecord
     {
         return $this->del($video_id,Params::VIDEO_SHARE_TYPE);
     }
+
+    public static function getShareByRoomId($room_id)
+    {
+        return self::findOne(['obj_id'=>$room_id,'type'=>Params::LIVE_SHARE_TYPE]);
+    }
 }