Add return for reversable migration

has-friendship · Dec 3, 2018 · 7c3412d · 7c3412d
1 parent e89bd72
commit 7c3412d
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/db/migrate/4_add_unique_index_to_friendships.rb b/db/migrate/4_add_unique_index_to_friendships.rb
@@ -14,6 +14,8 @@ def self.up
   end
 
   def self.down
+    return unless index_exists?(:friendships, [:friendable_id, :friend_id])
+
     remove_index :friendships, [:friendable_id, :friend_id]
   end
 end