Update role-based data permissions (#465)

* Add department data operation permissions

* Update sys models

* Add role department many-to-many relationship

* Format RBAC code

* update codes

* add update role depts api

* add comments

* Update the implementation

* update dept arg

* debug front

* Update the model file naming

* Refactor the data perms

* Add data permission rule

* Optimize the details

* Implement data filtering

* finish

backend/utils/import_parse.py

@@ -0,0 +1,47 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+import importlib
+
+from functools import lru_cache
+from typing import Any
+
+from backend.common.exception import errors
+
+
+def parse_module_str(module_path: str) -> tuple:
+    """
+    Parse a module string into a Python module and class/function.
+
+    :param module_path:
+    :return:
+    """
+    module_name, class_or_func = module_path.rsplit('.', 1)
+    return module_name, class_or_func
+
+
+@lru_cache(maxsize=512)
+def import_module_cached(module_name: str) -> Any:
+    """
+    缓存导入模块
+
+    :param module_name:
+    :return:
+    """
+    return importlib.import_module(module_name)
+
+
+def dynamic_import(module_path: str) -> Any:
+    """
+    动态导入
+
+    :param module_path:
+    :return:
+    """
+    module_name, obj_name = parse_module_str(module_path)
+
+    try:
+        module = import_module_cached(module_name)
+        class_or_func = getattr(module, obj_name)
+        return class_or_func
+    except (ImportError, AttributeError):
+        raise errors.ServerError(msg=f'数据模型 {module_name} 动态导入失败，请联系系统超级管理员')