app/models/page.rb
# == Schema Information
#
# Table name: pages
#
# id :integer not null, primary key
# name :string(255)
# permalink :string(255)
# content :text
# created_at :datetime not null
# updated_at :datetime not null
#
class Page < ActiveRecord::Base
validates :content, presence: true
validates :permalink, uniqueness: true, length: {maximum: 50, minimum: 3}, presence: true
validates :name, length: {maximum: 20, minimum: 3}, presence: true
end