feat: add basic subscriptions + emit notification for comment

src/fellchensammlung/migrations/0003_subscriptions.py

@@ -0,0 +1,46 @@
+# Generated by Django 5.0.6 on 2024-08-02 17:31
+
+import django.db.models.deletion
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("fellchensammlung", "0002_basenotification_commentnotification"),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name="Subscriptions",
+            fields=[
+                (
+                    "id",
+                    models.BigAutoField(
+                        auto_created=True,
+                        primary_key=True,
+                        serialize=False,
+                        verbose_name="ID",
+                    ),
+                ),
+                ("created_at", models.DateTimeField(auto_now_add=True)),
+                (
+                    "adoption_notice",
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        to="fellchensammlung.adoptionnotice",
+                        verbose_name="AdoptionNotice",
+                    ),
+                ),
+                (
+                    "user",
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        to=settings.AUTH_USER_MODEL,
+                        verbose_name="Nutzer*in",
+                    ),
+                ),
+            ],
+        ),
+    ]

src/fellchensammlung/models.py

@@ -185,6 +185,9 @@ class AdoptionNotice(models.Model):
     def get_report_url(self):
         return reverse('report-adoption-notice', args=[str(self.id)])
 
+    def get_subscriptions(self):
+        return Subscriptions.objects.filter(adoption_notice=self)
+
     def get_photos(self):
         """
         First trys to get group photos that are attached to the adoption notice if there is none it trys to fetch
@@ -557,4 +560,4 @@ class CommentNotification(BaseNotification):
 class Subscriptions(models.Model):
     user = models.ForeignKey(User, on_delete=models.CASCADE, verbose_name=_('Nutzer*in'))
     adoption_notice = models.ForeignKey(AdoptionNotice, on_delete=models.CASCADE, verbose_name=_('AdoptionNotice'))
-    created_at = models.DateTimeField(auto_now_add=True)
+    created_at = models.DateTimeField(auto_now_add=True)

src/fellchensammlung/views.py

@@ -12,7 +12,7 @@ from notfellchen import settings
 
 from fellchensammlung import logger
 from .models import AdoptionNotice, Text, Animal, Rule, Image, Report, ModerationAction, \
-    User, Location, AdoptionNoticeStatus, Subscriptions
+    User, Location, AdoptionNoticeStatus, Subscriptions, CommentNotification
 from .forms import AdoptionNoticeForm, AdoptionNoticeFormWithDateWidget, ImageForm, ReportAdoptionNoticeForm, \
     CommentForm, ReportCommentForm, AnimalForm, \
     AdoptionNoticeSearchForm, AnimalFormWithDateWidget
@@ -59,12 +59,20 @@ def adoption_notice_detail(request, adoption_notice_id):
             if comment_form.is_valid():
                 comment_instance = comment_form.save(commit=False)
                 comment_instance.adoption_notice_id = adoption_notice_id
-                comment_instance.user = request.user.member
+                comment_instance.user = request.user
                 comment_instance.save()
 
                 # Auto-subscribe user to adoption notice
-                subscription = Subscriptions(adoption_notice=adoption_notice, user=request.user)
+                subscription, created = Subscriptions.objects.get_or_create(adoption_notice=adoption_notice, user=request.user)
                 subscription.save()
+
+                # Notify users that a comment was added
+                for subscription in adoption_notice.get_subscriptions():
+                    notification = CommentNotification(user=subscription.user,
+                                                       title=f"{adoption_notice.name} - Neuer Kommentar",
+                                                       text=f"{request.user}: {comment_instance.text}",
+                                                       comment=comment_instance)
+                    notification.save()
         else:
             raise PermissionDenied
     else: