form_for for a has_one relation model

[Jean]

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.