my horrible awful stripe/signup integration

home.html.erb

<div class="jumbotron center">
  <h1 class="center-header">Blocipedia</h1>
  <h2 class="center-header">Social, Markdown Wikis</h2>
  <br>
  <div class="row">
    <div class="col-sm-5">
      <h3>Free Account</h3>
      <ul>
        <li>Create unlimited public wikis</li>
        <li>Collaborate with unlimited users</li>
      </ul>
      <%= link_to "Sign up now!", new_user_registration_path(plan: @free_plan.id), class: 'btn btn-default btn-lg btn-block' %>
    </div>
    <div class="col-sm-5 col-sm-offset-2">
      <h3>Premium Account</h3>
      <ul>
        <li>All the benefits of basic</li>
        <li>Unlimited private wikis</li>
      </ul>
      <%= link_to "Sign up now!", new_user_registration_path(plan: @premium_plan.id), class: 'btn btn-success btn-lg btn-block' %>
    </div>
  </div>
</div>

new.html.erb

<!-- registrations/new.html.erb -->
<div class="panel panel-default">
  <div class="panel-heading">
    <h1>Sign up with <%#= @plan.name %>Plan</h1>
  </div>

  <div class="panel-body">
    <% if params[:plan] == "2" %>
      <%= form_for(resource, :as => resource_name, :url => registration_path(resource_name)) do |f| %>
        <%#= devise_error_messages! %>

        <%= hidden_field_tag 'plan', params[:plan] %>

        <div class="form-group">
          <%= f.label :username %>
          <%= f.text_field :username, autofocus: true, class: "form-control" %>
        </div>

        <div class="form-group">
          <%= f.label :email %>
          <%= f.email_field :email, class: "form-control" %>
        </div>

        <div class="form-group">
          <%= f.label :password %>
          <%= f.password_field :password, class: "form-control" %>
        </div>

        <div class="form-group">
          <%= f.label :password_confirmation %>
          <%= f.password_field :password_confirmation, class: "form-control" %>
        </div>

        <%= f.hidden_field :stripe_card_token %>
          <div class="form-group">
            <%= label_tag :card_number, "Credit Card Number" %>
            <%= text_field_tag :card_number, nil, name: nil %>
          </div>
          <div class="form-group">
            <%= label_tag :card_code, "Security Code on Card (CVV)" %>
            <%= text_field_tag :card_code, nil, name: nil %>
          </div>
          <div class="form-group">
            <%= label_tag :card_month, "Card Expiration" %>
            <%= select_month nil, {add_month_numbers: true}, {name: nil, id: "card_month"}%>
            <%= select_year nil, {start_year: Date.today.year, end_year: Date.today.year+15}, {name: nil, id: "card_year"}%>
          </div>
          <div id="stripe_error">
            <noscript>JavaScript is not enabled and is required for this form. First enable it in your web browser settings.</noscript>
          </div>

        <div class="form-group">
          <%= f.submit "Sign up", class: "btn btn-primary" %>
        </div>
      <% end %>
  </div>
  <% else %>
   <%= form_for(resource, :as => resource_name, :url => registration_path(resource_name), html: { id: "free_user"}) do |f| %>
        <%#= devise_error_messages! %>

        <%= hidden_field_tag 'plan', params[:plan] %>

        <div class="form-group">
          <%= f.label :username %>
          <%= f.text_field :username, autofocus: true, class: "form-control" %>
        </div>

        <div class="form-group">
          <%= f.label :email %>
          <%= f.email_field :email, class: "form-control" %>
        </div>

        <div class="form-group">
          <%= f.label :password %>
          <%= f.password_field :password, class: "form-control" %>
        </div>

        <div class="form-group">
          <%= f.label :password_confirmation %>
          <%= f.password_field :password_confirmation, class: "form-control" %>
        </div>

        <div class="form-group">
          <%= f.submit "Sign up", class: "btn btn-primary" %>
        </div>
      <% end %>
    <% end %>


  <div class="panel-footer">
    <%= render "devise/shared/links" %>
  </div>
</div>

pages_controller.rb

class PagesController < ApplicationController
  before_filter :setup, only: [:home]

  def home
    @free_plan
    @premium_plan
  end

  def about
  end

  private

  def setup
    plans = Plan.all
    plans.each do |plan|
      if plan.id == 1
        @free_plan = plan
      else
        @premium_plan = plan
      end
    end
  end
end

plan.rb

class Plan < ActiveRecord::Base
  attr_accessible :name, :price

  has_many :users
end

registrations.js.coffee

jQuery ->
  Stripe.setPublishableKey($('meta[name="stripe-key"]').attr('content'))
  subscription.setupForm()

subscription =
  setupForm: ->
    $('#new_user').submit ->
      $('input[type=submit]').prop('disabled', true)
      subscription.processCard()
      false

  processCard: ->
    card =
      number: $('#card_number').val()
      cvc: $('#card_code').val()
      expMonth: $('#card_month').val()
      expYear: $('#card_year').val()

    Stripe.createToken(card, subscription.handleStripeResponse)

  handleStripeResponse: (status, response) ->
    if status == 200
      $('#user_stripe_card_token').val(response.id)
      $('#new_user')[0].submit()
    else
      $('#stripe_error').text(response.error.message)
      $('input[type=submit]').prop('disabled', false)

registrations_controller.rb

class Users::RegistrationsController < Devise::RegistrationsController

  private

  def build_resource(*args)
    super
    if params[:plan]
      resource.plan_id = params[:plan]
      if resource.plan_id == 2
        resource.save_with_payment
      else
        resource.save
      end
    end
    binding.pry
  end
end

user.rb

class User < ActiveRecord::Base
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :trackable, :validatable #:confirmable,
  
  attr_accessible :username, :email, :password, :password_confirmation, :remember_me, :subscription,
  :stripe_customer_token, :plan_id, :stripe_card_token
  
  has_many :wikis
  has_many :wiki_collaborations
  has_many :shared_wikis, through: :wiki_collaborations, source: :wiki
  
  belongs_to :plan

  validates_presence_of :plan_id

  attr_accessor :stripe_card_token
  
  def save_with_payment
    if valid?
      customer = Stripe::Customer.create(description: email, plan: plan_id, card: stripe_card_token)
      self.stripe_customer_token = customer.id
      save!
    end
  rescue Stripe::InvalidRequestError => e
    logger.error "Stripe error while creating customer: #{e.message}"
    errors.add :base, "There was a problem with your credit card."
    false
  end

end