Feat/3824/bulletin/post and project

front_end/src/app/(main)/components/bulletins.tsx

@@ -35,14 +35,28 @@ const Bulletins: FC = () => {
     );
   }, [pathname]);
 
+  const bulletinParams = useMemo(() => {
+    const questionMatch = pathname.match(/^\/questions\/(\d+)(?:\/|$)/);
+    if (questionMatch) {
+      return { post_id: Number(questionMatch[1]) };
+    }
+
+    const projectMatch = pathname.match(/^\/tournament\/([^/]+)(?:\/|$)/);
+    if (projectMatch) {
+      return { project_slug: projectMatch[1] };
+    }
+
+    return undefined;
+  }, [pathname]);
+
   const fetchBulletins = useCallback(async () => {
     try {
-      const bulletins = await ClientMiscApi.getBulletins();
-      setBulletins(bulletins);
+      const bulletins = await ClientMiscApi.getBulletins(bulletinParams);
+      setBulletins(bulletins ?? []);
     } catch (error) {
       logError(error);
     }
-  }, []);
+  }, [bulletinParams]);
 
   useEffect(() => {
     if (!shouldHide) {

front_end/src/services/api/misc/misc.shared.ts

@@ -1,4 +1,5 @@
 import { ApiService } from "@/services/api/api_service";
+import { encodeQueryParams } from "@/utils/navigation";
 
 export type ContactForm = {
   email: string;
@@ -21,14 +22,20 @@ export interface SiteStats {
   years_of_predictions: number;
 }
 
+type BulletinParams = {
+  post_id?: number;
+  project_slug?: string;
+};
+
 class MiscApi extends ApiService {
-  async getBulletins() {
+  async getBulletins(params?: BulletinParams) {
+    const queryParams = encodeQueryParams(params ?? {});
     const resp = await this.get<{
       bulletins: {
         text: string;
         id: number;
       }[];
-    }>("/get-bulletins/");
+    }>(`/get-bulletins/${queryParams}`);
     return resp?.bulletins;
   }
 

misc/admin.py

@@ -1,3 +1,4 @@
+from admin_auto_filters.filters import AutocompleteFilterFactory
 from django import forms
 from django.contrib import admin
 from django.core.exceptions import ValidationError
@@ -8,7 +9,12 @@
 @admin.register(Bulletin)
 class BulletinAdmin(admin.ModelAdmin):
     list_display = ["__str__", "bulletin_start", "bulletin_end"]
-    search_fields = ["bulletin_start", "bulletin_end", "text"]
+    search_fields = ["post", "project", "bulletin_start", "bulletin_end", "text"]
+    list_filter = [
+        AutocompleteFilterFactory("Post", "post"),
+        AutocompleteFilterFactory("Project", "project"),
+    ]
+    autocomplete_fields = ["post", "project"]
 
 
 class SidebarItemAdminForm(forms.ModelForm):

misc/migrations/0007_bulletin_post_bulletin_project.py

@@ -0,0 +1,38 @@
+# Generated by Django 5.1.13 on 2025-11-22 16:04
+
+import django.db.models.deletion
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("misc", "0006_whitelistuser_notes_and_more"),
+        ("posts", "0025_post_actual_resolve_time"),
+        ("projects", "0021_projectindex_project_index_projectindexpost"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="bulletin",
+            name="post",
+            field=models.ForeignKey(
+                blank=True,
+                help_text="Optional. If set, places this Bulletin only on this post's page.",
+                null=True,
+                on_delete=django.db.models.deletion.CASCADE,
+                to="posts.post",
+            ),
+        ),
+        migrations.AddField(
+            model_name="bulletin",
+            name="project",
+            field=models.ForeignKey(
+                blank=True,
+                help_text="Optional. If set, places this Bulletin only on this project's page.",
+                null=True,
+                on_delete=django.db.models.deletion.CASCADE,
+                to="projects.project",
+            ),
+        ),
+    ]

misc/models.py

@@ -43,8 +43,30 @@ class Bulletin(TimeStampedModel):
     bulletin_end = models.DateTimeField()
     text = models.TextField()
 
+    post = models.ForeignKey(
+        Post,
+        null=True,
+        blank=True,
+        db_index=True,
+        on_delete=models.CASCADE,
+        help_text="""Optional. If set, places this Bulletin only on this post's page.""",
+    )
+    project = models.ForeignKey(
+        Project,
+        null=True,
+        blank=True,
+        db_index=True,
+        on_delete=models.CASCADE,
+        help_text="""Optional. If set, places this Bulletin only on this project's page.""",
+    )
+
     def __str__(self):
-        return self.text[:150] + "..." if len(self.text) > 150 else self.text
+        text = self.text
+        if self.post:
+            text = (self.post.short_title or self.post.title)[:50] + "... " + text
+        elif self.project:
+            text = self.project.name[:50] + "... " + text
+        return text[:150] + "..." if len(text) > 150 else text
 
 
 class BulletinViewedBy(TimeStampedModel):

misc/views.py

@@ -1,10 +1,11 @@
 from datetime import datetime
 
-import django
+from django.db.models import Q
 from django.conf import settings
 from django.core.mail import EmailMessage
 from django.http import JsonResponse
 from django.views.decorators.cache import cache_page
+from django.utils import timezone
 from rest_framework import status
 from rest_framework.decorators import api_view, permission_classes
 from rest_framework.exceptions import PermissionDenied
@@ -85,12 +86,27 @@ def remove_article_api_view(request, pk):
 @permission_classes([AllowAny])
 def get_bulletins(request):
     user = request.user
+    data = request.query_params
+    post_id = data.get("post_id")
+    project_slug = data.get("project_slug")  # maybe needs to be slug for simplicity
 
     bulletins = Bulletin.objects.filter(
-        bulletin_start__lte=django.utils.timezone.now(),
-        bulletin_end__gte=django.utils.timezone.now(),
+        bulletin_start__lte=timezone.now(),
+        bulletin_end__gte=timezone.now(),
     )
 
+    if post_id:
+        bulletins = bulletins.filter(Q(post_id__isnull=True) | Q(post_id=post_id))
+    else:
+        bulletins = bulletins.filter(post_id__isnull=True)
+
+    if project_slug:
+        bulletins = bulletins.filter(
+            Q(project_id__isnull=True) | Q(project__slug=project_slug)
+        )
+    else:
+        bulletins = bulletins.filter(project_id__isnull=True)
+
     bulletins_viewed_by_user = []
     if user and user.is_authenticated:
         bulletins_viewed_by_user = [