bigdir/db/migrate/20140626012511_modify_student_roles.rb

# -*coding:utf-8 -*-
class ModifyStudentRoles < ActiveRecord::Migration
  def change
    # 修改学生权限
    # 添加回复讨论区权限
    role = Role.find_by_name('学生')
    if role
      role.permissions.append(:add_messages)
      role.save(:validate => false)
    end
  end

end