ambition/app/models/user.rb

class User < ActiveRecord::Base
  has_and_belongs_to_many :projects
  has_and_belongs_to_many :missions

  has_many :notes

  has_secure_password  # 等价于验证password_confirm和password是否相等，并且验证password是否存在

  validates :name, presence: true, length: { maximum: 30 }
  validates :email, presence: true, uniqueness: true, length: { maximum: 50},
           format: { with: /\A([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})\Z/i }
  validates :password, length: { minimum: 6 },on:create
  validates :phone, presence: true, format: { with: /\A[0-9]{11,11}\Z/i },
      multiline: false
end