reactor: 增加DynamicMappingSerializer类，实现Serializer中的字段可以动态改变的功能 (#5379)

* reactor: 增加DynamicMappingSerializer类，实现Serializer中的字段可以动态改变的功能

* reactor: 增加DynamicMappingSerializer类，实现Serializer中的字段可以动态改变的功能 (2)

* reactor: 增加DynamicMappingSerializer类，实现Serializer中的字段可以动态改变的功能 (3)

Co-authored-by: Bai <bugatti_it@163.com>

apps/tickets/api/ticket.py

@@ -0,0 +1,67 @@
+# -*- coding: utf-8 -*-
+#
+
+from rest_framework import viewsets
+from rest_framework.decorators import action
+from rest_framework.exceptions import MethodNotAllowed
+
+from common.const.http import POST, PUT
+from common.mixins.api import CommonApiMixin
+from common.permissions import IsValidUser, IsOrgAdmin
+
+from tickets import serializers
+from tickets.models import Ticket
+from tickets.permissions.ticket import IsAssignee, NotClosed
+
+
+__all__ = ['TicketViewSet']
+
+
+class TicketViewSet(CommonApiMixin, viewsets.ModelViewSet):
+    permission_classes = (IsValidUser,)
+    serializer_class = serializers.TicketSerializer
+    serializer_classes = {
+        'default': serializers.TicketDisplaySerializer,
+        'display': serializers.TicketDisplaySerializer,
+        'open': serializers.TicketApplySerializer,
+        'approve': serializers.TicketApproveSerializer,
+        'reject': serializers.TicketRejectSerializer,
+        'close': serializers.TicketCloseSerializer,
+    }
+    filter_fields = [
+        'id', 'title', 'type', 'action', 'status', 'applicant', 'applicant_display', 'processor',
+        'processor_display', 'assignees__id'
+    ]
+    search_fields = [
+        'title', 'action', 'type', 'status', 'applicant_display', 'processor_display'
+    ]
+
+    def create(self, request, *args, **kwargs):
+        raise MethodNotAllowed(self.action)
+
+    def update(self, request, *args, **kwargs):
+        raise MethodNotAllowed(self.action)
+
+    def destroy(self, request, *args, **kwargs):
+        raise MethodNotAllowed(self.action)
+
+    def get_queryset(self):
+        queryset = Ticket.get_user_related_tickets(self.request.user)
+        return queryset
+
+    @action(detail=False, methods=[POST])
+    def open(self, request, *args, **kwargs):
+        return super().create(request, *args, **kwargs)
+
+    @action(detail=True, methods=[PUT], permission_classes=[IsOrgAdmin, IsAssignee, NotClosed])
+    def approve(self, request, *args, **kwargs):
+        return super().update(request, *args, **kwargs)
+
+    @action(detail=True, methods=[PUT], permission_classes=[IsOrgAdmin, IsAssignee, NotClosed])
+    def reject(self, request, *args, **kwargs):
+        return super().update(request, *args, **kwargs)
+
+    @action(detail=True, methods=[PUT], permission_classes=[IsOrgAdmin, IsAssignee, NotClosed])
+    def close(self, request, *args, **kwargs):
+        return super().update(request, *args, **kwargs)
+