Nested form is not showing up!

Question

I have a nested model structure that looks like this:

resources :users, :path => '/' do
    resources :accounts do
        resources :characters
    end
end

I'm trying to get the accounts#new page to show both the forms but for some reason only the accounts form is displayed (screenshot).

Here's the git: https://github.com/imjp/d2shed

account.rb

class Account < ActiveRecord::Base
attr_accessible :account_name, :realm
accepts_nested_attributes_for :characters

belongs_to :user
has_many :characters, :dependent => :destroy 

validates :account_name, :presence => 'true',
                    :length => { :in => 4..20 },
                    :uniqueness => 'true'

validates_presence_of :realm
validates_format_of :account_name, :with => /^[A-Za-z\d_]+$/
end

accounts_controller.rb

def new 
    @user = User.find(params[:user_id])
    @account = Account.new
    @account.characters.build
end

_form.html.erb

<%= form_for([@user, @account]) do |f| %>
<div class="field">
<%= f.label :account_name %><br />
<%= f.text_field :account_name %>
</div>
<div class="field">
<%= f.radio_button(:realm, "USWest") %>
    <%= f.label(:realm, "USWest") %>

    <%= f.radio_button(:realm, "USEast") %>
    <%= f.label(:realm, "USEast") %>

    <%= f.radio_button(:realm, "Europe") %>
    <%= f.label(:realm, "Europe") %>

    <%= f.radio_button(:realm, "Asia") %>
    <%= f.label(:realm, "Asia") %>
 </div>     

<%= f.fields_for :character do |character_form| %>

        <div class="field"> 
            Name: <%= character_form.text_field :name %>
        </div> 
    <% end %>

 <div class="actions">
<%= f.submit %>
</div>
<% end %>

EDIT: The code works now!

Answer 1

Why are you doing fields_for ".." ?

What you want to do is <%= f.fields_for :characters %> as that will iterate through all the characters and render the fields as required in the account form. By calling fields_for on the f object you're telling the parent form that it contains nested attributes.

Secondly, you'll need to use the @account object in your form rather than building another one with @user.accounts.build. By doing it this wrong way, you're actually creating a new account object which wouldn't have any character objects pre-built for it.

In addition to this you will need to specify accepts_nested_attributes_for :characters in your Account model so that the form accepts them along with the account parameters.