add api for usd course for Aziz aka

core/apps/shared/serializers/usd_course.py

@@ -0,0 +1,11 @@
+from rest_framework import serializers
+
+from core.apps.shared.models import UsdCourse
+
+
+class UsdCourseSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = UsdCourse
+        fields = [
+            'id', 'value'
+        ]

core/apps/shared/urls.py

@@ -1,8 +1,10 @@
 from django.urls import path, include 
 
 from core.apps.shared.views import region as region_views
+from core.apps.shared.views.usd_course import UsdCourseApiView
 
 urlpatterns = [
     path('region/list/', region_views.RegionListApiView.as_view()),
     path('region/<uuid:id>/districts/', region_views.DistrictListApiView.as_view()),
+    path('usd_course/', UsdCourseApiView.as_view()),
 ]

core/apps/shared/views/usd_course.py

@@ -0,0 +1,29 @@
+from django.shortcuts import get_object_or_404
+
+from rest_framework import generics
+from rest_framework.response import Response
+
+from core.apps.shared.models import UsdCourse
+from core.apps.shared.serializers.usd_course import UsdCourseSerializer
+from core.apps.accounts.permissions.permissions import HasRolePermission
+
+
+class UsdCourseApiView(generics.GenericAPIView):
+    serializer_class = UsdCourseSerializer
+    queryset = UsdCourse.objects.all()
+    permission_classes = [HasRolePermission]
+
+    def get(self, request):
+        value = UsdCourse.objects.first()
+        serializer = self.serializer_class(value)
+        return Response(serializer.data, status=200)
+    
+    def patch(self, request, id):
+        usd_cource = get_object_or_404(UsdCourse, id=id)
+        serializer = self.serializer_class(data=request.data)
+        if serializer.is_valid():
+            return Response(serializer.errors, status=400)
+        value = serializer.validated_data.get('value')
+        usd_cource.value = value
+        usd_cource.save()
+        return Response({'new_value': usd_cource.value, 'old_value': value}, status=200)