Verschachteltes Formular für Join-Tabelle

Question

Ich versuche, ein verschachteltes Formular in das Devise-Registrierungsformular einzufügen. Meine 3 Tabellen sind Benutzer (Gerät), Sprachen, und beide sind in Languages_Users verbunden

Es registriert den neuen Benutzer, aber speichert nicht Languages_Users, aber ich sehe, dass es in den Parametern übergeben wird. Ein neues Problem ist ebenfalls aufgetreten - die Avatardatei wird nicht mehr gespeichert. Ich bin mir nicht sicher, ob diese verwandt sind (wenn nicht, mach dir keine Sorgen darüber).

** UPDATE - Hier meine aktuellen Protokolle sind - ich glaube, jetzt das Problem aufgrund languages_users Empfang nicht User_id

"languages users can't be blank'. In my logs though, it says 'SELECT 1 AS one FROM "languages_users" WHERE ("languages_users"."user_id" IS NULL AND "languages_users"."language_id" = 2) LIMIT 1' Is this an issue with not passing the user_id? 

**

User.rb

class User < ActiveRecord::Base 
    has_many :languages_users 
    has_many :languages, :through => :languages_users 
    accepts_nested_attributes_for :languages_users 

    devise :database_authenticatable, :registerable, 
     :recoverable, :rememberable, :trackable, :validatable 

    belongs_to :role 

    has_attached_file :avatar, :styles => { :medium => "300x300>", :thumb => "100x100#" }, :default_url => "/images/:style/missing.png" 

    validates_attachment_content_type :avatar, :content_type => /\Aimage\/.*\Z/ 
    validates_presence_of :first_name, :last_name, :location, :nationality, :bio 
end 

registrations_controller. rb

class Users::RegistrationsController < Devise::RegistrationsController 
before_filter :configure_permitted_parameters 
def new 
build_resource({}) 
    resource.languages_users.build 
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_user_attributes: [:id, :language_id, :user_id, :level]) } 
end 
end 

in Anmeldungen: new.html.erb

<h2>Sign up</h2> 

<%= 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> 
    <div class="field"> 
    <%= f.label :last_name %><br /> 
    <%= f.text_field :last_name %> 
    </div> 
    <div class="field"> 
    <%= f.label :location %><br /> 
    <%= f.text_field :location %> 
    </div> 
    <div class="field"> 
    <%= f.label :nationality %><br/> 
    <%= f.text_field :nationality %> 
    </div> 
    <div class="field"> 
    <%= f.label :bio %><br /> 
    <%= f.text_field :bio %> 
    </div> 
    <div class="field"> 
    <%= f.label :email %><br /> 
    <%= f.text_field :email %> 
    </div> 
    <div class="form-group"> 
     <%= f.label :avatar, class: 'col-sm-2 control-label' %> 
     <div class="col-sm-6"> 
      <%= f.file_field "user[avatar]" %> 
     </div> 
    </div> 
    <%= f.fields_for :langauges_user do |lu| %> 
    <br> 
     <div class="fields"> 
     <%= lu.collection_select(:language_id, Language.order('language ASC').all, :id, :language) %><br> 
     <%= lu.hidden_field :level, value: 1 %> 
    <% end %> 
    </div> 
    <br> 
    <div class="field"> 
    <%= f.label :password %> 
    <% if @minimum_password_length %> 
    <em>(<%= @minimum_password_length %> characters minimum)</em> 
    <% end %><br /> 
    <%= f.password_field :password, autocomplete: "off" %> 
    </div> 
    <div class="field"> 
    <%= f.label :password_confirmation %><br /> 
    <%= f.password_field :password_confirmation, autocomplete: "off" %> 
    </div> 
    <div class="actions"> 
    <%= f.submit "Sign up" %> 
    </div> 
<% end %> 

Protokolle:

Started POST "/users" for ::1 at 2016-03-26 13:30:40 -0400 
Processing by Users::RegistrationsController#create as HTML 
    Parameters: {"utf8"=>"✓", "authenticity_token"=>"x1F0kXqKN2/uu7S6BLxyBgSatcVWiSOLASEYYJ7ZF0b3d8V8O+FVQAO0yhjTJ2LImI+Xy4j7Rn+SvlYjV07mrA==", "user"=>{"first_name"=>"John", "last_name"=>"Smith", "location"=>"NYC", "nationality"=>"American", "bio"=>"hello", "email"=>"johns@gmail.com", "user"=>{"avatar"=>#<ActionDispatch::Http::UploadedFile:0x007f940b16a4f8 @tempfile=#<Tempfile:/var/folders/cn/l75pvjk9707bj93z_yykb0t40000gn/T/RackMultipart20160326-11607-1fg5ncg.JPG>, @original_filename="IMG_4573.JPG", @content_type="image/jpeg", @headers="Content-Disposition: form-data; name=\"user[user[avatar]]\"; filename=\"IMG_4573.JPG\"\r\nContent-Type: image/jpeg\r\n">}, "langauges_users"=>{"language_id"=>"16", "level"=>"1"}, "password"=>"[FILTERED]", "password_confirmation"=>"[FILTERED]"}, "commit"=>"Sign up"} 
Unpermitted parameters: user, langauges_users 

Noch ein newb, so lassen Sie es mich wissen, wenn Sie möchten, dass ich nichts weiter bieten.

Danke!

Answer 1

Sie languages_user zu languages_users

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: [:id, :language_id, :user_id, :level]) } 
end 

Auch in fields_for

<%= f.fields_for :languages_users do |lu| %>