Multi-model nested form, can't add users to current account - ruby-on-rails

Question

I've searched everywhere for a solution but haven't come up with any.
The part that works: My app allows customers to create an account using a nested form. The data collected creates records in four models - accounts, users, accounts_users (because a user can be associated with many accounts), and profile (to store the user's fname, lname, phone, etc).
That part that doesn't work: Once logged in, I want the users to be able to add more users to their account using the form below. I don't receive any errors upon submit but I am brought back to the same form with no additional records created. Any help would be awesome!
Here is the nested form...
<%= form_for #user, :validate => true do |f| %>
<fieldset>
<%= f.fields_for :profile do |p| %>
<div class="field">
<%= p.label :first_name %>
<%= p.text_field :first_name %>
</div>
<div class="field">
<%= p.label :last_name %>
<%= p.text_field :last_name %>
</div>
<div class="field">
<%= p.label :phone %>
<%= p.text_field :phone %>
</div>
<% end %>
<div class="field">
<%= f.label :email %>
<%= f.text_field :email %>
</div>
<div class="actions">
<%= f.submit 'Create New User', :class => "btn btn-large btn-success" %>
<%= cancel %>
</div>
</fieldset>
The ApplicationController scopes everything to the current_account like so:
def current_account
#current_account ||= Account.find_by_subdomain(request.subdomain) if request.subdomain
end
The UsersController
def new
#user = User.new
#user.build_profile()
#current_account.accounts_users.build() #Edit2: This line was removed
respond_to do |format|
format.html # new.html.erb
format.json { render json: #user }
end
def create
#user = User.new(params[:user])
#user.accounts_users.build(:account_id => current_account.id) #Edit2: This line was added
if #user.save
# Send Email and show 'success' message
flash[:success] = 'An email has been sent to the user'
else
# Render form again
render 'new'
end
end
Models look like this:
class Account < ActiveRecord::Base
attr_accessible :name, :subdomain, :users_attributes
has_many :accounts_users
has_many :users, :through => :accounts_users
accepts_nested_attributes_for :users
end
class User < ActiveRecord::Base
attr_accessible :email, :password, :password_confirmation, :profile_attributes
has_many :accounts_users
has_many :accounts, :through => :accounts_users
has_one :profile
accepts_nested_attributes_for :profile
end
class AccountsUser < ActiveRecord::Base
belongs_to :account
belongs_to :user
end
class Profile < ActiveRecord::Base
belongs_to :user
attr_accessible :first_name, :last_name, :phone
end
Edit2: It turns out that I had required a password + password_comfirmation validation in the User model which prevented me from adding another user without these fields. I commented out these validations plus removed the line: current_account.accounts_users.build() in the 'new' action and added the line: #user.accounts_users.build(:account_id => current_account.id) in the 'create' action.

Answer 1

"I want the users to be able to add more users to their account using the form below." I assume you mean profiles (since your nested form is on profiles)?
If that's the case, I think your UsersController's create action isn't associating the profiles with users by using new.
Try this...
def new
#user = User.build
#profile = #user.profiles.build #build adds the profile to user's associated collection of profiles, but new doesn't
...
end
def create
#user = User.build(params[:user])
if #user.save
....
end
end
If you want the user to be associated with account, then you need to put the new and create actions in the AccountsController and do something similar to nest association of the users and profiles records.
Btw, the reason that it went back to new is because you render new at the end of the create, in case that's also part of the question. Hope that helps!