add uniqueness constraint to votes to deduplicate

2023-01-24 16:17:53 +01:00 · 2023-01-24 16:17:53 +01:00 · 3193daf664
parent 8b96fa7637
commit 3193daf664
1 changed files with 1 additions and 0 deletions
--- a/db/migrate/20230123193409_create_votes.rb
+++ b/db/migrate/20230123193409_create_votes.rb
@ -9,5 +9,6 @@ class CreateVotes < ActiveRecord::Migration[6.0]

      t.timestamps
    end
+    add_index :votes, [:user_id, :election_slug], unique: true
  end
 end