bigdir/app/models/user_extensions.rb

# encoding: utf-8
=begin
  identity字段含义
  0 教师教授
  1 学生
  2 企业
  3 开发者
=end
class UserExtensions < ActiveRecord::Base
  validate :school, presence: true

  belongs_to :user
  belongs_to :school, :class_name => 'School', :foreign_key => :school_id
  attr_accessible :user_id,:birthday,:brief_introduction,:gender,:location,:occupation,:work_experience,:zip_code,:identity, :technical_title,:student_id
  TEACHER = 0
  STUDENT = 1
  ENTERPRISE = 2
  DEVELOPER = 3
  #this method was used to update the table user_extensions
  def update_user_extensions(birthday=nil,brief_introduction=nil,
                              gender=nil,location=nil,occupation=nil,work_experience=nil,zip_code=nil)
     self.birthday = birthday
     self.brief_introduction = brief_introduction
     self.gender = gender
     self.location = location
     self.occupation = occupation
     self.work_experience = work_experience
     self.zip_code = zip_code
     self.save
  end
  
  def get_brief_introduction
     return self.brief_introduction
  end
  
# added by bai  
  def show_identity
    if self.identity == 0
      user_identity = '教师'
    elsif self.identity == 1
      user_identity = '学生'
    elsif self.identity == 2
      user_identity = '企业' 
    elsif self.identity == 3
      user_identity = '开发者' 
    else
      user_identity = ''
    end
    return user_identity
  end
# end 
  
  def self.introduction(user, message)
    unless user.user_extensions.nil?
       info = user.user_extensions
       info.brief_introduction = message
       info.save
    else
       info = UserExtensions.new
       info.user_id = user.id
       info.brief_introduction = message
       info.save
    end
  end
  

  
end