safe_remove_index (spree/migration_helpers.rb)

Safe database index management for Rails migrations to prevent failures.

# Source: https://github.com/solidusio/solidus | License: BSD-3-Clause | Copyright 2007-2014, Spree Commerce Inc. and other contributors
# Provided via justclaw.it.com; keep this notice with the code.
# frozen_string_literal: true

module Spree
  module MigrationHelpers
    def safe_remove_index(table, column)
      remove_index(table, column) if index_exists?(table, column)
    end

    def safe_add_index(table, column, **options)
      if columns_exist?(table, column) && !index_exists?(table, column, **options)
        add_index(table, column, **options)
      end
    end

    private

    def columns_exist?(table, columns)
      Array.wrap(columns).all? { |column| column_exists?(table, column) }
    end
  end
end