feat 修改sellers长度为0不保存的bug

structs/storage/article.go

@@ -35,10 +35,15 @@ func (a *articleApi) Upsert(article v2.Article) error {
 		}).Create(&article).Error; err != nil {
 			return err
 		}
-		if err := tx.Save(&article.Providers).Error; err != nil {
-			return fmt.Errorf("failed to save providers: %v", err)
+		if len(article.Providers) > 0 {
+			if err := tx.Save(&article.Providers).Error; err != nil {
+				return fmt.Errorf("failed to save providers: %v", err)
+			}
 		}
-		return tx.Save(&article.Sellers).Error
+		if len(article.Sellers) > 0 {
+			return tx.Save(&article.Sellers).Error
+		}
+		return nil
 	})
 
 }