view db/migrate/072_add_enumerations_position.rb @ 69:dc22c3eb3c81 luisf

Feature #35:
- Does not show the label "My Projects" if the user does not have any projects.
- If the user is not signed in only shows the default Projects list.

class AddEnumerationsPosition < ActiveRecord::Migration
  def self.up
    add_column(:enumerations, :position, :integer, :default => 1) unless Enumeration.column_names.include?('position')
    Enumeration.find(:all).group_by(&:opt).each do |opt, enums|
      enums.each_with_index do |enum, i|
        # do not call model callbacks
        Enumeration.update_all "position = #{i+1}", {:id => enum.id}
      end
    end
  end

  def self.down
    remove_column :enumerations, :position
  end
end