feat(models.py): add max_attendees and signed_up_users fields to EventPage

home/models.py

@@ -85,6 +85,11 @@ class EventPage(Page):
 
     # TODO: use google maps here
     location = models.CharField(max_length=255, blank=True)
+    max_attendees = models.PositiveIntegerField(
+        null=True,
+        blank=True,
+        help_text="Maximum number of attendees. Leave blank for unlimited.",
+    )
 
     description = RichTextField(blank=True)
     hosts = ParentalManyToManyField(
@@ -92,12 +97,35 @@ class EventPage(Page):
         related_name="hosted_events",
         help_text="Select users who will be listed as hosts of this event.",
     )
+    signed_up_users = models.ManyToManyField(
+        User,
+        related_name="signed_up_events",
+        blank=True,
+        help_text="Users who have signed up for this event.",
+    )
+
+    @property
+    def attendees_count(self):
+        return self.signed_up_users.count()  # pyright: ignore[reportAttributeAccessIssue]
+
+    def _user_signed_up(self, user):
+        if not user.is_authenticated:
+            return False
+
+        return self.signed_up_users.filter(id__in=[user.id]).exists()  # pyright: ignore[reportAttributeAccessIssue]
+
+    def get_context(self, request):
+        context = super().get_context(request)
+        context["user_signed_up"] = self._user_signed_up(request.user)
+        return context
 
     content_panels = Page.content_panels + [
         FieldPanel("image"),
         FieldPanel("start"),
         FieldPanel("end"),
         FieldPanel("location"),
+        FieldPanel("max_attendees"),
         FieldPanel("hosts", widget=CheckboxSelectMultiple),
         FieldPanel("description"),
+        FieldPanel("signed_up_users", read_only=True, widget=CheckboxSelectMultiple),
     ]