Rails 4 nested_attributes 与 has_one 关联回滚

Question

我在 Rails 4 个应用程序中有两个模型与 has_one 关联。

class User < ActiveRecord::Base
  has_one :member
  accepts_nested_attributes_for :member
end

class Member < ActiveRecord::Base
  belongs_to :user
end

我正在尝试创建带成员的用户。这是我的控制器。

class UsersController < ApplicationController
  def new
    @user = User.new
    @user.build_member
  end

  def create
    @user = User.new member_params
    if @user.save
      redirect_to users_path
    else
      render action: :new
    end
  end

  private

  def member_params
    params[:user].permit(:id, :name, :email, :password, :city, member_attributes: [ :position, :avatar, :avatar_cache, :user_id ])
  end
end

这是表格。我使用 SimpleForm.

= simple_form_for @user do |f|
  = f.input :name
  = f.input :email
  = f.input :city
  = f.input :password
  = f.simple_fields_for :member, @user.member do |us|
    = us.input :position
    = us.input :avatar
  = f.button :submit

我的代码哪一部分有问题？

Parameters: {"utf8"=>"✓", "authenticity_token"=>"eqxcHlLrnKB9atm3YGG6WyMT429qqRr5zpB/LM4IMAI=", "user"=>{"name"=>"Павел", "email"=>"kalashnikov@ulmic.ru", "city"=>"Ульяновск", "password"=>"[FILTERED]", "member_attributes"=>{"position"=>"123", "avatar_cache"=>""}}, "commit"=>"Создать User"}
User Load (0.4ms)  SELECT  "users".* FROM "users"  WHERE "users"."id" = 1 LIMIT 1 (0.3ms)  
BEGIN
User Exists (0.5ms)  SELECT  1 AS one FROM "users"  WHERE "users"."email" = 'kalashnikov@ulmic.ru' LIMIT 1 (0.3ms)  
ROLLBACK

此代码在我的 Rails 3 项目中有效，但在 Rails 3 中没有 strong_parameters。

Answer 1

验证问题比强参数问题更有可能。在您的情况下， user.email 似乎被限制为唯一的，但它可以是 user 或 member 模型上的任何内容。当然，即使提交了正确的数据，禁止参数也可能是验证失败的原因，但在这种情况下，您会在服务器日志中看到一条消息（但不会抛出异常）。

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