[feat] add GetResRelationResource

base/res_relation.go

@@ -22,6 +22,9 @@ type GetResRelations func(categoryUuid string) []ResRelation
 
 type GetOrmJoinsByResRelations func(root string, items []ResRelation) []contracts.Join
 
+// 获取被关联对象的资源
+type GetResRelationResource func(r ResRelation) Resource
+
 // 资源关联依赖
 func GetJoinResDependencies(root string, items []ResRelation) (dependencies []string) {
 	dependencies = []string{root}