endpoint for filters

app/applicationlayer/cms/master/form/company/views.py

 from rest_framework.filters import SearchFilter, OrderingFilter
 from django_filters import rest_framework as filters
-from app.entities.models import Company, AllowedCompany
+from app.entities.models import (
+    Company, AllowedCompany,
+    ChangeRequestFormHeader, AllowedCompany
+)
 from rest_framework import viewsets, status
 from app.businesslayer.company.serializer import AdminCompanySerializer
 from app.applicationlayer.utils import CustomPagination, status_message_response
@@ -12,6 +15,7 @@ from app.applicationlayer.cms.master.form.company.table_filters import (
 from app.helper.decorators import rms
 from rest_framework.response import Response
 from django.db.models import Q
+from rest_framework.decorators import action
 
 
 class ChangeRequestCompanyFormViewSet(viewsets.ModelViewSet):
@@ -47,3 +51,55 @@ class ChangeRequestCompanyFormViewSet(viewsets.ModelViewSet):
 
         serializer = self.get_serializer(queryset, many=True)
         return Response(serializer.data)
+
+
+    @action(
+        methods=['GET'], detail=False,
+        url_path='filter', url_name='filter'
+    )
+    def filter(self, request, *args, **kwargs):
+
+        # instance = self.get_object()
+        # list_his = []
+
+        queryset = self.filter_queryset(self.get_queryset())
+
+
+        id_number = request.user.code
+
+        forms = ChangeRequestFormHeader.objects.filter(
+            Q(frm_approvers__user__code=id_number) |
+            Q(requested_by_user=id_number) |
+            Q(frm_stakes__user__code=id_number)
+        ).values()
+        # print(id_number)
+        # print(forms)
+
+        allowed = AllowedCompany.objects.filter(
+            id_number=id_number
+        ).values().distinct()
+
+        forms = [data['requested_to_company_id'] for data in forms]
+        allowed = [data['company_pivot_id'] for data in allowed]
+
+        forms = forms + allowed
+        if len(forms) == 0:
+            queryset = queryset.filter(id=0)
+        else:
+            queryset = queryset.filter(code__in=forms)
+    
+        page = self.paginate_queryset(queryset)
+
+        if page is not None:
+            serializer = self.get_serializer(page, many=True)
+
+            message = status_message_response(
+                200,
+                'success',
+                'list of Company found',
+                serializer.data
+            )
+            return self.get_paginated_response(message)
+
+        serializer = self.get_serializer(queryset, many=True)
+        return Response(serializer.data)