Rails尝试在创建用户后创建配置文件 [英] Rails Trying to create a profile after the user has been created

问题描述

我正在试图找出刚刚创建的用户的新配置文件，

I'm trying to figure out how to create a new profile for the user that has just been created,

我在用户模型上使用devise， User模型与UserProfile模型有一对一的关系。

I'm using devise on the User model, and the User model has a one to one relationship with the UserProfile model.

以下是我的用户模型：

class User < ActiveRecord::Base
  has_and_belongs_to_many :roles
  belongs_to :batch
  has_one :user_profile

  after_create :create_user_profile

  def create_user_profile
    self.user_profile.new(:name => 'username')
  end

  # Include default devise modules. Others available are:
  # :confirmable, :lockable, :timeoutable and :omniauthable
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :trackable, :validatable
end

这会产生以下错误：

未定义的方法new为nil：NilClass

undefined method `new' for nil:NilClass

我尝试过 User.find （1）.user_profile 在 rails c 中，所以我很确定关系的设置是否正确，

i've tried User.find(1).user_profile in rails c and that works so I'm pritty sure the relationship is setup correctly,

我'可能是一个大胖子noob，并试图获取自己不正确。

I'm probably being a big fat noob and trying to fetch self incorrectly.

加上你还可以告诉我如何访问params在模型...甚至可能？

plus can you also tell me how to access the params in a Model... is that even possible?

推荐答案

has_one关系将自动添加：create_<关系> 和 build_<关系> 方法。 检查导轨指南。

A has_one relationship will automatically add the :create_<relationship> and build_<relationship> methods. Checkout the rails guide.

您可以尝试这样：

after_create do
  create_user_profile(:name => 'username')
end

或更有可能

after_create do
  create_user_profile(:name => self.username)
end

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