ruby-on-rails - 注册时以嵌套形式传递 user_id 并保存两个模型

Question

我的 Devise 注册表单上有一个嵌套表单，它填充了一个连接表。连接表信息未保存，因为 user_id 为 nil。这是因为他们还没有登录，所以我不能通过 current_user。如何通过 user_id 以一种形式保存连接表(语言用户)？

new.html.erb 的相关部分

 <%= form_for(resource, as: resource, url: registration_path(resource)) do |f| %>
  <%= devise_error_messages! %>
  <div class="field">
    <%= f.label :first_name %><br />
    <%= f.text_field :first_name, autofocus: true %>
  </div>
  <%= f.fields_for :languages_users do |lu| %>
   <div class="fields">
     <%= lu.collection_select(:language_id, Language.order('language ASC').all, :id, :language) %><br>
     <%= lu.hidden_field :level, value: 1 %>
     <%#= lu.hidden_field :user_id, value: current_user.id %>
  <% end %>
   </div>
   <div class="actions">
     <%= f.submit "Sign up" %>
   </div>
  <% end %>

registrations_controller.rb

    class Users::RegistrationsController < Devise::RegistrationsController
    before_filter :configure_permitted_parameters
    def new
         build_resource({})
          resource.languages_users.build(user_id: current_user)  
         respond_with self.resource
    end
  def create
    super 
  end
 private
 def configure_permitted_parameters
        devise_parameter_sanitizer.for(:sign_up) { |u|
          u.permit(:email, :password, :password_confirmation, :bio, :location, :last_name, :first_name, :nationality, :avatar, languages_users_attributes: [ :language_id, :user_id, :level]) }
  end
end

这是我的参数:

  {"utf8"=>"✓",
 "authenticity_token"=>"v/uM0+B7/XCUKmhyFGoEKqunCllXAK50uZN5f+TDpUsxlnIsgQVPbXhEb1q1P5pmG586iaULRROyarWzAzz12w==",
 "user"=>{"first_name"=>"Walsh",
 "last_name"=>"Costigan",
 "location"=>"w",
 "nationality"=>"United States",
 "bio"=>"w",
 "email"=>"walsh@seamlessdocs.com",
 "user"=>{"avatar"=>#<ActionDispatch::Http::UploadedFile:0x007fdd25023f78 @tempfile=#<Tempfile:/var/folders/cn/l75pvjk9707bj93z_yykb0t40000gn/T/RackMultipart20160403-6431-1hpthwr.JPG>,
 @original_filename="IMG_4574.JPG",
 @content_type="image/jpeg",
 @headers="Content-Disposition: form-data; name=\"user[user[avatar]]\"; filename=\"IMG_4574.JPG\"\r\nContent-Type: image/jpeg\r\n">},
 "languages_users_attributes"=>{"language_id"=>"18",
 "level"=>"1"},
 "password"=>"[FILTERED]",
 "password_confirmation"=>"[FILTERED]"},
 "commit"=>"Sign up"}

更新** 目前这是我的代码所在的位置。它保存了用户，但不是 languages_user 模型

用户.rb 创建后:创建语言用户

def create_languages_user
 @users = self.id
 @languages_user = LanguagesUser.new(@user)
end

注册 Controller :

def new
 @user = User.new
 build_resource({})
 respond_with self.resource
end

def create 
 super
end

private

def configure_permitted_parameters
    devise_parameter_sanitizer.for(:sign_up) { |u|
      u.permit(:email, :password, :password_confirmation, :bio, :location, :last_name, :first_name, :nationality, :avatar, languages_users_attributes: [ :language_id, :level]) }
end

Answer 1

很简单。只需将 block 传递给 Users::RegistrationsController Controller 中的 #create 方法

def create
 super do |user|
   language_user_params = params[:user][:langauges_user].permit(:language_id,:level)
   user.languages_users.create(language_id: language_user_params[:language_id], level: language_user_params[:level])
 end 
end