Hello guys, I''m new in rails and I have the following question: I have two model user and user_informacion: class User < ActiveRecord::Base attr_accessible :email, :password, :password_confirmation has_one :user_information has_secure_password before_save { |user| user.email = email.downcase } before_save :create_remember_token VALID_EMAIL_REGEX = /\A[\w+\-.]+@[a-z\d\-.]+\.[a-z]+\z/i validates :email, presence: true, format: { with: VALID_EMAIL_REGEX }, uniqueness: { case_sensitive: false } validates :password, presence: true, length: { minimum: 6 }, confirmation: true, unless: Proc.new { |a| !a.new_record? && a.password.present? } def send_password_reset self.password_reset_token = SecureRandom.urlsafe_base64 self.password_reset_at = Time.zone.now self.password = self.password self.save!(:validate => false ) UserMailer.password_reset(self).deliver end def reset_password_token self.password_reset_token = nil self.password_reset_at = nil save! end private def create_remember_token if self.new_record? self.remember_token = SecureRandom.urlsafe_base64 end end end class UserInformation < ActiveRecord::Base belongs_to :user attr_accessible :address, :address2, :business, :descripcion, :identification_number, :mobile_cell, :name, :phone_number validates :address, presence: true, length: { :maximum => 250 } validates :address2, length: { :maximum => 250 } validates :descripcion, presence: true, length: { :maximum => 300 } validates :identification_number, presence: true validates :phone_number, presence: true, length: { :is => 11 } validates :mobile_cell, :length => { :is => 11 } validates :user_id, presence: true end As you can see User has_one UserInformation My routes are like this: resources :users do member do resource :user_information end end resources :sessions, only: [:new, :create, :destroy] resources :password_resets root to: ''users#new'' match ''/signup'', to: ''users#new'' match ''/signin'', to: ''sessions#new'' match ''/signout'', to: ''sessions#destroy'', via: :delete I having a lot of problem tying to figure out how to make a form_for for my create action of my user_information. I tried with form_form(@user_information) do |f|, form_for([user, user.user_information.build]) do |f| but I always get an error. Does anyone can help me with this form_fom, please??? The form_for if for my new view of may user_information. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To view this discussion on the web visit https://groups.google.com/d/msg/rubyonrails-talk/-/kLrf8MgfytEJ. For more options, visit https://groups.google.com/groups/opt_out.