[Rails] Problem with HABTM relation

[Daniel Goldberg]

When I try to create some User with the POST below I received the following 
msg:

Completed 404 Not Found in 17005ms (Views: 1.7ms | ActiveRecord: 6.6ms).

I debugged a little and I find this error

Couldn't find Shared::Category with ID=5 for Shared::User with ID=

I don't know really what's going on. I can't create any user.

Thanks!

------WebKitFormBoundaryZnTz2ebfP2GeXgF8Content-Disposition: form-data; 
name="user[username]"
asdasdasd
------WebKitFormBoundaryZnTz2ebfP2GeXgF8Content-Disposition: form-data; 
name="user[first_name]"
asd------WebKitFormBoundaryZnTz2ebfP2GeXgF8Content-Disposition: form-data; 
name="user[last_name]"
asd------WebKitFormBoundaryZnTz2ebfP2GeXgF8Content-Disposition: form-data; 
name="user[email]"
asdas...@tob.uy------WebKitFormBoundaryZnTz2ebfP2GeXgF8Content-Disposition: 
form-data; name="user[birth_date]"Wed Apr 01 2015 00:00:00 GMT-0300 
(ART)------WebKitFormBoundaryZnTz2ebfP2GeXgF8Content-Disposition: form-data; 
name="user[brand]"false------WebKitFormBoundaryZnTz2ebfP2GeXgF8Content-Disposition:
 form-data; 
name="user[influencer]"false------WebKitFormBoundaryZnTz2ebfP2GeXgF8Content-Disposition:
 form-data; 
name="user[inspirational]"false------WebKitFormBoundaryZnTz2ebfP2GeXgF8Content-Disposition:
 form-data; name="user[gender]"
male------WebKitFormBoundaryZnTz2ebfP2GeXgF8Content-Disposition: form-data; 
name="user[avatar]"; filename="ic_launcher.png"Content-Type: 
image/png------WebKitFormBoundaryZnTz2ebfP2GeXgF8Content-Disposition: 
form-data; 
name="user[categories_attributes][0][id]"5------WebKitFormBoundaryZnTz2ebfP2GeXgF8Content-Disposition:
 form-data; name="user[categories_attributes][0][name]"
facebook------WebKitFormBoundaryZnTz2ebfP2GeXgF8Content-Disposition: form-data; 
name="user[categories_attributes][0][avatar]"
http://localhost:3000/uploads/shared/category/avatar/5/big_facebook.png.webp------WebKitFormBoundaryZnTz2ebfP2GeXgF8Content-Disposition:
 form-data; 
name="user[categories_attributes][1][id]"7------WebKitFormBoundaryZnTz2ebfP2GeXgF8Content-Disposition:
 form-data; name="user[categories_attributes][1][name]"
tobuycat------WebKitFormBoundaryZnTz2ebfP2GeXgF8Content-Disposition: form-data; 
name="user[categories_attributes][1][avatar]"
http://localhost:3000/uploads/shared/category/avatar/7/big_ic_launcher.png.webp------WebKitFormBoundaryZnTz2ebfP2GeXgF8Content-Disposition:
 form-data; 
name="user[password]"123123------WebKitFormBoundaryZnTz2ebfP2GeXgF8Content-Disposition:
 form-data; 
name="user[password_confirmation]"123123------WebKitFormBoundaryZnTz2ebfP2GeXgF8--

Clases (in shared module)

class User < ActiveRecord::Base
    has_and_belongs_to_many :categories, class_name: 'Shared::Category', 
join_table: "categories_users"
    accepts_nested_attributes_for :categories
class Category < ActiveRecord::Base
    self.table_name = :categories

    has_and_belongs_to_many :users, class_name: 'Shared::User', join_table: 
"categories_users"
    accepts_nested_attributes_for :users

Controller:

def create
    user = Shared::User.new(user_params)
    user.created_by = staff_from_token
    location = user.save ? v1_private_user_url(user) : nil
    respond_with(user, location: location, serializer: 
Private::UserSerializer)end

Serializers

module Shared
  class CategorySerializer < ActiveModel::Serializer
    attributes :name, :id, :avatar, :avatar_thumb
    def avatar_thumb
      Rails.env.test? ? object.avatar.url : object.avatar.thumb_webp.url
    end
    def users
      object.users.order(name: :asc)
    end
    def avatar
      Rails.env.test? ? object.avatar.url : object.avatar.big_webp.url
    end
  endend

module Shared
  class UserSerializer < ActiveModel::Serializer
    attributes :first_name, :last_name, :email, :gender, :username, 
:inspirational,
               :location, :brand, :influencer, :birth_date, :avatar, 
:avatar_thumb, :id,
               :facebook_uid, :categories
    def avatar_thumb
      Rails.env.test? ? object.avatar.url : object.avatar.thumb_webp.url
    end
    def avatar
      Rails.env.test? ? object.avatar.url : object.avatar.big_webp.url
    end
    def categories
      object.categories.map do |category|
        CategorySerializer.new(category)
      end
    end
  endend

-- 
You received this message because you are subscribed to the Google Groups "Ruby 
on Rails: Talk" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to rubyonrails-talk+unsubscr...@googlegroups.com.
To post to this group, send email to rubyonrails-talk@googlegroups.com.
To view this discussion on the web visit 
https://groups.google.com/d/msgid/rubyonrails-talk/bf29eab6-dc00-47e4-9546-4f79d8085eea%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.