Merge remote-tracking branch 'origin/lichang'

src/framework/datasource/datasource.go

@@ -117,6 +117,9 @@ func DefaultDB() *gorm.DB {
 
 // 获取数据源
 func DB(source string) *gorm.DB {
+	if source == "" {
+		source = config.Get("gorm.defaultDataSourceName").(string)
+	}
 	return dbMap[source]
 }