Question

I’m trying to achieve a simple 1 to 1 relation in Rails 3 where a user can connect a bank account.

class User < ActiveRecord::Base
  has_one :bank
  accepts_nested_attributes_for :bank
  attr_accessible :bank_attributes
end

class Bank < ActiveRecord::Base
   belongs_to :user
end

Route

resources :users do
  resources :bank

Now when i build a new bank object for a user in users/1/bank/new like this:

def new
  @user = User.find(current_user.id)
  @bank = @user.build_bank
end

I get an error on my for which looks like this:

<%= simple_form_for(@bank) do |f| %>

The error is:

undefined method `banks_path' for #<#<Class:0x007fa7bd090f08>:0x007fa7c0545b40>

My goal is to have a separate form for a user to add there bank account information.. Hope someone can help me in the right direction to do this. I also use ActiveAdmin and the relation with forms etc works fine there.

Any help is appreciated!

Answer 1

You need to declare resource in plural form regardless of the association type.

So, your resource declaration

resources :users do
  resource :banks
end