openproject/db/migrate/20130919105841_migrate_settings_to_work_package.rb

#-- copyright
# OpenProject is a project management system.
#
# Copyright (C) 2012-2013 the OpenProject Team
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License version 3.
#
# See doc/COPYRIGHT.rdoc for more details.
#++

require_relative 'migration_utils/utils'

class MigrateSettingsToWorkPackage < ActiveRecord::Migration
  include Migration::Utils

  COLUMN = 'name'

  SETTINGS = {
    "issue_list_summable_columns" => "work_package_list_summable_columns",
    "issue_list_default_columns" => "work_package_list_default_columns",
    "issues_export_limit" => "work_packages_export_limit",
    "issue_done_ratio" => "work_package_done_ratio",
    "cross_project_issue_relations" => "cross_project_work_package_relations",
    "display_subprojects_issues" => "display_subprojects_work_packages",
    "issue_startdate_is_adddate" => "work_package_startdate_is_adddate"
  }

  def up
    say_with_time_silently "Update settings" do
      update_column_values('settings', [COLUMN], update_settings(SETTINGS), filter)
    end
  end

  def down
    say_with_time_silently "Restore settings" do
      update_column_values('settings', [COLUMN], update_settings(SETTINGS.invert), filter)
    end
  end

  private

  def filter
    "#{COLUMN} LIKE '%issue%'"
  end

  def update_settings(settings)
    Proc.new do |row|
      merge_setting = !row[COLUMN].nil? && settings.has_key?(row[COLUMN])

      row[COLUMN] = settings[row[COLUMN]] if merge_setting

      UpdateResult.new(row, merge_setting)
    end
  end
end