fix broken unique constraint

apps/home/migrations/0020_remove_savedguilds_unique_name_guild_id_pair_and_more.py

@@ -0,0 +1,28 @@
+# Generated by Django 5.0.4 on 2024-05-03 13:35
+
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('home', '0019_subscription_filters'),
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.RemoveConstraint(
+            model_name='savedguilds',
+            name='unique name & guild_id pair',
+        ),
+        migrations.AlterField(
+            model_name='subscription',
+            name='filters',
+            field=models.ManyToManyField(blank=True, null=True, to='home.filter'),
+        ),
+        migrations.AddConstraint(
+            model_name='savedguilds',
+            constraint=models.UniqueConstraint(fields=('added_by', 'guild_id'), name='unique added_by & guild_id pair'),
+        ),
+    ]

apps/home/models.py

@@ -95,8 +95,8 @@ class SavedGuilds(models.Model):
         constraints = [
             # Prevent servers from having subscriptions with duplicate names
             models.UniqueConstraint(
-                fields=["name", "guild_id"],
-                name="unique name & guild_id pair"
+                fields=["added_by", "guild_id"],
+                name="unique added_by & guild_id pair"
             )
         ]
 
@@ -216,7 +216,7 @@ class Subscription(models.Model):
         blank=True,
     )
 
-    filters = models.ManyToManyField(to="home.Filter")
+    filters = models.ManyToManyField(to="home.Filter", null=True, blank=True)
 
     active = models.BooleanField(
         default=True,