db/migrate/20090503121505_populate_member_roles.rb


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class PopulateMemberRoles < ActiveRecord::Migration[4.2]
  def self.up
    MemberRole.delete_all
    Member.all.each do |member|
      MemberRole.create!(:member_id => member.id, :role_id => member.role_id)
    end
  end

  def self.down
    MemberRole.delete_all
  end
end