reactor&feat: 重构工单模块 & 支持申请应用工单 (#5352)

* reactor: 修改工单Model，添加工单迁移文件

* reactor: 修改工单Model，添加工单迁移文件

* reactor: 重构工单模块

* reactor: 重构工单模块2

* reactor: 重构工单模块3

* reactor: 重构工单模块4

* reactor: 重构工单模块5

* reactor: 重构工单模块6

* reactor: 重构工单模块7

* reactor: 重构工单模块8

* reactor: 重构工单模块9

* reactor: 重构工单模块10

* reactor: 重构工单模块11

* reactor: 重构工单模块12

* reactor: 重构工单模块13

* reactor: 重构工单模块14

* reactor: 重构工单模块15

* reactor: 重构工单模块16

* reactor: 重构工单模块17

* reactor: 重构工单模块18

* reactor: 重构工单模块19

* reactor: 重构工单模块20

* reactor: 重构工单模块21

* reactor: 重构工单模块22

* reactor: 重构工单模块23

* reactor: 重构工单模块24

* reactor: 重构工单模块25

* reactor: 重构工单模块26

* reactor: 重构工单模块27

* reactor: 重构工单模块28

* reactor: 重构工单模块29

* reactor: 重构工单模块30

* reactor: 重构工单模块31

* reactor: 重构工单模块32

* reactor: 重构工单模块33

* reactor: 重构工单模块34

* reactor: 重构工单模块35

* reactor: 重构工单模块36

* reactor: 重构工单模块37

* reactor: 重构工单模块38

* reactor: 重构工单模块39

apps/tickets/api/assignee.py

@@ -0,0 +1,29 @@
+# -*- coding: utf-8 -*-
+#
+
+from rest_framework import viewsets
+
+from users.models import User
+from common.permissions import IsValidUser
+from common.exceptions import JMSException
+from orgs.utils import get_org_by_id
+from .. import serializers
+
+
+class AssigneeViewSet(viewsets.ReadOnlyModelViewSet):
+    permission_classes = (IsValidUser,)
+    serializer_class = serializers.AssigneeSerializer
+    filter_fields = ('id', 'name', 'username', 'email', 'source')
+    search_fields = filter_fields
+
+    def get_org(self):
+        org_id = self.request.query_params.get('org_id')
+        org = get_org_by_id(org_id)
+        if not org:
+            raise JMSException('The organization `{}` does not exist'.format(org_id))
+        return org
+
+    def get_queryset(self):
+        org = self.get_org()
+        queryset = User.get_super_and_org_admins(org=org)
+        return queryset