Better views for projects

projects/migrations/0017_remove_project_views_count.py

@@ -0,0 +1,17 @@
+# Generated by Django 4.1.3 on 2023-06-20 20:46
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("projects", "0016_alter_projectnews_files"),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name="project",
+            name="views_count",
+        ),
+    ]

projects/models.py

@@ -66,12 +66,6 @@ class Project(models.Model):
 
     objects = ProjectManager()
 
-    views_count = models.PositiveIntegerField(default=0)
-
-    def increment_views_count(self):
-        self.views_count += 1
-        self.save()
-
     def get_short_description(self) -> Optional[str]:
         return self.description[:90] if self.description else None
 

projects/serializers.py

@@ -1,7 +1,9 @@
 from django.contrib.auth import get_user_model
+from django.contrib.contenttypes.models import ContentType
 from rest_framework import serializers
 
 from core.fields import CustomListField
+from core.models import View
 from core.services import get_views_count, get_likes_count, is_fan
 from industries.models import Industry
 from projects.models import Project, Achievement, Collaborator, ProjectNews
@@ -71,6 +73,7 @@ class ProjectDetailSerializer(serializers.ModelSerializer):
     short_description = serializers.SerializerMethodField()
     industry_id = serializers.IntegerField(required=False)
     likes_count = serializers.SerializerMethodField(method_name="count_likes")
+    views_count = serializers.SerializerMethodField(method_name="count_views")
     links = serializers.SerializerMethodField()
 
     @classmethod
@@ -88,6 +91,13 @@ def get_short_description(cls, project):
     def count_likes(self, project):
         return LikesOnProject.objects.filter(project=project, is_liked=True).count()
 
+    def count_views(self, project):
+        # FIXME
+        # TODO: add caching here at least every 5 minutes, otherwise will be heavy load
+        return View.objects.filter(
+            content_type=ContentType.objects.get_for_model(Project), object_id=project.pk
+        ).count()
+
     def update(self, instance, validated_data):
         instance = super().update(instance, validated_data)
         instance.save()
@@ -132,6 +142,14 @@ class ProjectListSerializer(serializers.ModelSerializer):
         method_name="get_collaborator_count"
     )
     vacancies = ProjectVacancyListSerializer(many=True, read_only=True)
+    views_count = serializers.SerializerMethodField(method_name="count_views")
+
+    def count_views(self, project):
+        # FIXME
+        # TODO: add caching here at least every 5 minutes, otherwise will be heavy load
+        return View.objects.filter(
+            content_type=ContentType.objects.get_for_model(Project), object_id=project.pk
+        ).count()
 
     short_description = serializers.SerializerMethodField()
 
@@ -172,9 +190,7 @@ class Meta:
             "views_count",
         ]
 
-        read_only_fields = [
-            "leader",
-        ]
+        read_only_fields = ["leader", "views_count"]
 
     def is_valid(self, *, raise_exception=False):
         return super().is_valid(raise_exception=raise_exception)

projects/views.py

@@ -6,6 +6,7 @@
 from rest_framework.response import Response
 from rest_framework.views import APIView
 
+from core.models import View
 from core.permissions import IsStaffOrReadOnly
 from core.serializers import SetLikedSerializer
 from core.services import add_view, set_like
@@ -92,7 +93,10 @@ class ProjectDetail(generics.RetrieveUpdateDestroyAPIView):
 
     def retrieve(self, request, *args, **kwargs):
         instance = self.get_object()
-        instance.increment_views_count()
+        # create (or not, if it exists) a view object for project
+        View.objects.get_or_create(
+            user=request.user, content_type=Project, content_object=instance
+        )
         serializer = self.get_serializer(instance)
         return Response(serializer.data)