feat: add dynamic announcement modal with database management

Author: zorexsalvo

app/announcements/__init__.py

@@ -0,0 +1,16 @@
+from django.contrib import admin
+
+from .models import Announcement
+
+
+@admin.register(Announcement)
+class AnnouncementAdmin(admin.ModelAdmin):
+    list_display = ("title", "is_published", "created_at", "updated_at")
+    list_filter = ("is_published", "created_at")
+    search_fields = ("title", "content")
+    readonly_fields = ("created_at", "updated_at")
+    fieldsets = (
+        ("Content", {"fields": ("title", "content")}),
+        ("Status", {"fields": ("is_published",)}),
+        ("Metadata", {"fields": ("created_at", "updated_at")}),
+    )

app/announcements/admin.py

@@ -0,0 +1,7 @@
+from django.apps import AppConfig
+
+
+class AnnouncementsConfig(AppConfig):
+    default_auto_field = "django.db.models.BigAutoField"
+    name = "app.announcements"
+    verbose_name = "Announcements"

app/announcements/apps.py

@@ -0,0 +1,31 @@
+# Generated by Django 5.2.7 on 2026-03-12 13:53
+
+import tinymce.models
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Announcement',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('title', models.CharField(max_length=255)),
+                ('content', tinymce.models.HTMLField()),
+                ('is_published', models.BooleanField(default=False)),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+            ],
+            options={
+                'verbose_name': 'Announcement',
+                'verbose_name_plural': 'Announcements',
+                'ordering': ['-created_at'],
+            },
+        ),
+    ]

app/announcements/migrations/0001_initial.py

@@ -0,0 +1,23 @@
+from django.db import models
+from tinymce.models import HTMLField
+
+
+class Announcement(models.Model):
+    title = models.CharField(max_length=255)
+    content = HTMLField()
+    is_published = models.BooleanField(default=False)
+    created_at = models.DateTimeField(auto_now_add=True)
+    updated_at = models.DateTimeField(auto_now=True)
+
+    def __str__(self):
+        return self.title
+
+    @classmethod
+    def get_latest_published(cls):
+        """Get the latest published announcement."""
+        return cls.objects.filter(is_published=True).order_by("-created_at").first()
+
+    class Meta:
+        ordering = ["-created_at"]
+        verbose_name = "Announcement"
+        verbose_name_plural = "Announcements"

app/announcements/migrations/__init__.py

@@ -0,0 +1,5 @@
+def announcement_context(request):
+    """Inject latest published announcement into template context."""
+    from app.announcements.models import Announcement
+
+    return {"latest_announcement": Announcement.get_latest_published()}

app/announcements/models.py

@@ -69,6 +69,7 @@
     "app.speakers",
     "app.sponsors",
     "app.pages",
+    "app.announcements.apps.AnnouncementsConfig",
 ]
 
 INSTALLED_APPS = [
@@ -119,6 +120,7 @@
                 "django.contrib.auth.context_processors.auth",
                 "django.contrib.messages.context_processors.messages",
                 "app.pages.context_processors.navigation",
+                "config.context_processors.announcement_context",
             ],
         },
     },