feat: make channel description nullable

migrations/2025-05-21-203022_channel_description_nullable/down.sql

@@ -0,0 +1,4 @@
+-- This file should undo anything in `up.sql`
+UPDATE channels SET description = '' WHERE description IS NULL;
+ALTER TABLE ONLY channels ALTER COLUMN description SET NOT NULL;
+ALTER TABLE ONLY channels ALTER COLUMN description DROP DEFAULT;

migrations/2025-05-21-203022_channel_description_nullable/up.sql

@@ -0,0 +1,3 @@
+-- Your SQL goes here
+ALTER TABLE ONLY channels ALTER COLUMN description DROP NOT NULL;
+ALTER TABLE ONLY channels ALTER COLUMN description SET DEFAULT NULL;

src/schema.rs

@@ -26,7 +26,7 @@ diesel::table! {
         #[max_length = 32]
         name -> Varchar,
         #[max_length = 500]
-        description -> Varchar,
+        description -> Nullable<Varchar>,
     }
 }