CODEWITHSUNDEEP
ruby-on-rails
Lilz
Lilz

Reputation: 4091

linking models ruby on rails

I have 3 models: user, seller and cars

i want the user to be able to choose a car from a seller and this gets added to the user's shopping list.

I have something like this in my car controller:

 @user = User.find(params[:user])
  @seller = Seller.find(params[:seller])

  @car = @user.cars.build(params[:car])

but the seller isnt being added. how can I do this please?

Btw I have this:

class Car < ActiveRecord::Base
  belongs_to :user
  belongs_to :seller
end

in my Model for car

Upvotes: 0

Views: 130

Answers (3)

EmFi
EmFi

Reputation: 23450

If you ensure that the fields in your form that produce params[:car] includes a field for the seller's id you won't need to change your controller at all.

Eg:

<% fields_for :car, @seller.cars.build do |car_form| %>
 <%= car_form.hidden_field :seller_id
 ... more fields for car form ...

<% end %>

Upvotes: 1

Chuck Vose
Chuck Vose

Reputation: 4580

add:

@car.seller = @seller after you build the car. Then @car.save

Build doesn't know about @seller, you need to tell the car that it has a seller. It only really knows that there's a user because you created the car from the user.

You could also do:

@car = Car.new
@car.seller = @seller
@car.user = @user

Upvotes: 2

Steve Graham
Steve Graham

Reputation: 3021

@car.seller = @seller

Upvotes: 0

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