✨ Feat: [#41] notification 앱 생성 및 알림 조회 구현

notifications/admin.py

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+from django.contrib import admin
+
+# Register your models here.

notifications/apps.py

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+from django.apps import AppConfig
+
+
+class NotificationsConfig(AppConfig):
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'notifications'

notifications/models.py

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+from django.db import models
+
+from users.models import *
+
+from common.models.baseModels import *
+
+class Notification(BaseModel):
+    user = models.ForeignKey(User, on_delete=models.CASCADE, related_name='notifications')
+    content = models.TextField(blank=True)
+    is_read = models.BooleanField(default=False)
+    note_type = models.CharField(max_length=10, choices=NotificationType.choices)

notifications/serializers.py

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+from .models import *
+from projects.models import *
+from rest_framework import serializers
+
+class NotificationSerializer(serializers.ModelSerializer):
+    meta = serializers.SerializerMethodField()
+
+    class Meta:
+        model  = Notification
+        fields = ['id', 'content', 'note_type', 'is_read', 'meta']
+
+    def get_meta(self, obj):
+
+        REL_SERIALIZER_MAP = {
+            'project_invitation' : ProjectInvitationMetaSerializer,
+        }
+
+        for rel_name, serializer_cls in REL_SERIALIZER_MAP.items():
+            rel_obj = getattr(obj, rel_name, None)
+            if rel_obj is not None:
+                return serializer_cls(rel_obj).data
+        return None
+
+class ProjectInvitationMetaSerializer(serializers.ModelSerializer):
+    project_invitation_id = serializers.CharField(source='id')
+    project_title      = serializers.CharField(source='project.title')
+    from_user_nickname = serializers.CharField(source='from_user.nickname')
+
+    class Meta:
+        model  = ProjectInvitation
+        fields = ['project_invitation_id', 'project_title', 'from_user_nickname', 'status']
+    

notifications/services.py

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+from users.models import *
+from .models import *
+
+from common.models.choiceModels import *
+
+
+
+# 알림 관련 서비스 로직
+class NotifiationService:
+    @staticmethod
+    def set_content():
+        pass
+    
+    @staticmethod
+    def create_notification(user: User, note_type: NotificationType):
+        return Notification.objects.create(
+            user = user,
+            note_type=note_type
+        )

notifications/tests.py

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+from django.test import TestCase
+
+# Create your tests here.

notifications/urls.py

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+from django.urls import path, include
+
+from .views import *
+
+from rest_framework.routers import DefaultRouter
+
+app_name = 'notifications'
+
+router = DefaultRouter()
+router.register(r'', NotificationReadViewSet, basename='notification')
+
+urlpatterns = [
+    path('', include(router.urls)),
+]

notifications/views.py

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+from django.shortcuts import get_object_or_404
+from django.db import transaction
+
+from rest_framework.viewsets import ReadOnlyModelViewSet
+from rest_framework.views import APIView
+from rest_framework.response import Response
+from rest_framework import status
+
+from .serializers import *
+from .models import *
+from .services import *
+
+from users.services import *
+
+
+# Create your views here.
+class NotificationReadViewSet(ReadOnlyModelViewSet):
+    serializer_class = NotificationSerializer
+
+    # 30일 이전 알림만 가져옴
+    def get_queryset(self):
+        qs = UserToNotificationService.get_all_notification(self.request.user)
+        print(qs)
+        return qs.select_related(
+                'project_invitation__project',
+                'project_invitation__from_user',
+            )
+
+    def retrieve(self, request, *args, **kwargs):
+        instance = self.get_object()
+        instance.is_read = True
+        instance.save()
+        serializer = self.get_serializer(instance)
+        return Response(serializer.data, status=status.HTTP_200_OK)