feat: 工单多级审批 + 模版创建 (#6640)

* feat: 工单多级审批 + 模版创建

* feat: 工单权限处理

* fix: 工单关闭后 再审批bug

* perf: 修改一点

Co-authored-by: feng626 <1304903146@qq.com>
Co-authored-by: ibuler <ibuler@qq.com>

apps/common/db/encoder.py

@@ -0,0 +1,20 @@
+import json
+from datetime import datetime
+import uuid
+
+from django.utils.translation import ugettext_lazy as _
+from django.conf import settings
+
+
+class ModelJSONFieldEncoder(json.JSONEncoder):
+    """ 解决一些类型的字段不能序列化的问题 """
+
+    def default(self, obj):
+        if isinstance(obj, datetime):
+            return obj.strftime(settings.DATETIME_DISPLAY_FORMAT)
+        if isinstance(obj, uuid.UUID):
+            return str(obj)
+        if isinstance(obj, type(_("ugettext_lazy"))):
+            return str(obj)
+        else:
+            return super().default(obj)