remove index conditionally on up method

mbleigh · Jul 11, 2016 · 9cc580e · 9cc580e
1 parent 0ca1f1c
commit 9cc580e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/db/migrate/2_add_missing_unique_indices.rb b/db/migrate/2_add_missing_unique_indices.rb
@@ -2,7 +2,7 @@ class AddMissingUniqueIndices < ActiveRecord::Migration
   def self.up
     add_index :tags, :name, unique: true
 
-    remove_index :taggings, :tag_id
+    remove_index :taggings, :tag_id if index_exists?(:taggings, :tag_id)
     remove_index :taggings, [:taggable_id, :taggable_type, :context]
     add_index :taggings,
               [:tag_id, :taggable_id, :taggable_type, :context, :tagger_id, :tagger_type],