class AddMissingIndexesToIssues < ActiveRecord::Migration[4.2] def self.up add_index :issues, :status_id add_index :issues, :category_id add_index :issues, :assigned_to_id add_index :issues, :fixed_version_id add_index :issues, :tracker_id add_index :issues, :priority_id add_index :issues, :author_id end def self.down remove_index :issues, :status_id remove_index :issues, :category_id remove_index :issues, :assigned_to_id remove_index :issues, :fixed_version_id remove_index :issues, :tracker_id remove_index :issues, :priority_id remove_index :issues, :author_id end end