scinote-web/db/migrate/20151021085335_add_search_query_indexes.rb

require File.expand_path('app/helpers/database_helper')
include DatabaseHelper

class AddSearchQueryIndexes < ActiveRecord::Migration[4.2]
  def up
    add_index :projects, :team_id
    add_index :tags, :project_id

    # Add GIST trigram indexes onto columns that check for
    # ILIKE %pattern% during search
    add_gist_index :projects, :name
    add_gist_index :my_modules, :name
    add_gist_index :my_module_groups, :name
    add_gist_index :tags, :name
    add_gist_index :steps, :name
    add_gist_index :results, :name

      # There's already semi-useless BTree index on samples
    remove_index :samples, :name
    add_gist_index :samples, :name
  end

  def down
    remove_index :projects, :team_id
    remove_index :tags, :project_id

    remove_index :projects, :name
    remove_index :my_modules, :name
    remove_index :my_module_groups, :name
    remove_index :tags, :name
    remove_index :steps, :name
    remove_index :results, :name

      # Re-add semi-useless BTree index on samples
    remove_index :samples, :name
    add_index :samples, :name
  end
end