How to save a database with associations in rails protecting mass assignment

Question

After several hours of work, I cannot save the database.

The context is this: I have two types of users: for this I need only basic information [Username, email address, password] and another kind of user for which I need more information [age, gender, city, etc.]

I did not use STI because of the huge number of null values ​​that would be in the table. Therefore, I created three modes in which the user has a profile (profile table) or not depending on its type [1 or 2], and the field of this profile is the city in which this user lives, which belongs to another table in the database, table of cities

class User < ActiveRecord::Base
  has_one :profile
  has_one :city, through: :profile
end

class Profile < ActiveRecord::Base
  belongs_to :user
  belongs_to :city
  [...a bunch of fields here]
end

class City < ActiveRecord::Base
  has_many :profiles
  has_many :users, through: :profiles
end

When I play with them in the rails console, everything goes fine:

usr = User.new(name: "roxy", email: "[e-mail]", password: "roxanna", password_confirmation: "roxanna", utype: 1)
cty = City.new(name: "Bucaramanga")
prf = Profile.new (rname: "Rosa Juliana Diaz del Castillo"...)
prf.city = cty
usr.profile = prf
usr.valid?
=> true
usr.save
=> true

( )

<%= f.label :city, "En que ciudad te encuentras?"%>
<%= select_tag :city, options_from_collection_for_select(City.all, 'id', "name"),{:prompt => 'Selecciona tu ciudad'}%>

def new
  @profile = Profile.new
end

def create
  @profile = params[:profile]
  @city= City.find_by_id(params[:city].to_i)
  @profile.city = @city
end

:

undefined method `city=' for #<ActiveSupport::HashWithIndifferentAccess:0xa556fe0>

- ?

UPDATE , Profile create, :

def create
  @profile = Profile.new(params[:profile])
  @city= City.find_by_id(params[:city].to_i)
  @profile.city = @city
  @usr = current_user
  if @usr.profile.exists? @profile
    @usr.errors.add(:profile, "is already assigned to this user") # or something to that effect
    render :new
  else 
   @usr.profile << @profile
   redirect_to root_path
  end
end

undefined method `exists?' for nil:NilClass

current_user @current_user

def current_user
  @current_user ||= User.find_by_remember_token(cookies[:remember_token])
end

, ?

Answer 1

, , , .

, , . , , Profiles,

# education       :string(255)     not null

, :

Failed to save the new associated so_profile.

, , NOT_NULL, , , uncomment'em.

, :

class User < ActiveRecord::Base
  has_one :profile
  has_one :city, through: :profile
  attr_accessible :email, :name
end

class Profile < ActiveRecord::Base
  belongs_to :user
  belongs_to :city
  attr_accessible :age, :fcolor, :gender
end

class City < ActiveRecord::Base
  has_many :profiles
  has_many :users, through: :profiles
  attr_accessible :name
end

:

class ProfilesController < ApplicationController
  def new
    @user = User.find_by_id(params[:id])
    @profile = Profile.new
  end

  def create
    @profile = Profile.new(params[:profile])
    city = City.find_by_id(params[:city])
    @profile.city = city
    @user = User.find_by_id(params[:userid])
    @user.profile = @profile
    if @user.save
      flash[:success] =  "Guardado"
      redirect_to profile_path(id: @user.id)
    end
  end

  def show
   @user = User.find(params[:id])
  end  
end

class UsersController < ApplicationController
  def new
    @user = User.new
  end

  def create
    @user = User.new(params[:user])
    if @user.save
      flash[:success] =  "Registrado!"
      redirect_to new_profile_path(id: @user.id)
    else
      flash[:error] =  "No Registrado :("
      redirect_to new
    end
  end

  def show
    @user = User.find_by_id(params[:id])
  end
end

Cookies - , , , , user_token, user_id, , .

:

/new.html.erb

<%= @user.name %>
<%= form_for @profile, url: {action: :create, userid: @user.id } do |f| %>
<%= f.label :age, "Edad" %>
<%= f.text_field :age%> <br />

<%= label :city, "Ciudad"%>
<%= select_tag :city, options_from_collection_for_select(City.all, 'id', 'name')%>

<%= f.submit %>
<% end %>

/show.html.erb

Hello <%= @user.name %><br />
Tu edad es: <%= @user.profile.age %><br />
Vives en <%= @user.profile.city.name%>

/new.html.erb

<%= form_for @user do |f|%>
<%= f.label :name, "Nombre"%>
<%= f.text_field :name, size: 20, placeholder: "Escribe tu nombre aqui" %><br />

<%= f.label :email, "Email"%>
<%= f.text_field :email, size: 20, placeholder: "Escribe tu email aqui" %><br />

<%= f.submit "Sign me up!"%>

 

/show.html.erb

Name: <%= @user.name %><br />
Email: <%= @user.email %>

!

.

Answer 2

,

@so_profile.City 

not

@so_profile.city  

- City

Answer 3

. , @profile , Profile create.