new.html.erb

<div class="account-container register">
        <div class="content clearfix">
                        <h1>Create Your Account</h1>
                        <div class="login-fields">
<%= form_for(@subscription) do |f| %>
<%= f.hidden_field :stripe_card_token %>
<%= text_field_tag :card_number, nil, name: nil, :placeholder => "Card Number" %></br>
<%= text_field_tag :card_code, nil, name: nil, :placeholder => "CVV Code" %></br>
<h3>Expiration:</h3>

<%if @user.errors.any? %>
 <% @user.errors.full_messages.each do |msg| %>
        <li><%= msg %></li></br>
      <% end %>
      <% end %>

<%= select_month nil, {add_month_numbers: true}, {name: nil, id: "card_month"} %></br>
<%= select_year nil, {start_year: Date.today.year, end_year: Date.today.year+15}, {name: nil, id: "card_year"} %></br>

<h3>Plan:</h3>
<%= f.select :plan, {"19.99/mo" => '1', "25.99/mo" => '2', "59.99/mo" => '3'}, :selected => params[:plan]  %>

<%= text_field :user, :email, :placeholder => "Email" %></br>
<%= password_field :user, :password , :placeholder => "Password" %></br>
<%= password_field :user, :password_confirmation, :placeholder => "Confirm Password"  %></br>
  <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>
  <% if @subscription.errors.any? %>
    <div id="error_explanation">
      <h2><%= pluralize(@subscription.errors.count, "error") %> prohibited this purchase from being saved:</h2>
      <ul>
      <% @subscription.errors.full_messages.each do |msg| %>
        <li><%= msg %></li>
      <% end %>
	 </ul>
 </div>

  <% end %>

   </div> <!-- /login-fields -->
        


<div class="login-actions">
<span class="login-checkbox">
<input id="Field" name="Field" type="checkbox" class="field login-checkbox" value="First Choice" tabindex="4" />
<label class="choice" for="Field">I have read and agree with the Terms of Use.</label>
                </span>
<%= f.submit "Get me a database.", :class => "button btn btn-primary btn-large" %>
<% end %>
</div>
</div> <!-- /content -->
</div> <!-- /account-container -->

<!-- Text Under Box -->

subscription.rb

class Subscription < ActiveRecord::Base
 belongs_to :user
 attr_accessible :user_id, :stripe_card_token


def save_with_payment(plan, email)
    if valid?
      customer = Stripe::Customer.create(description: "#{email}", plan: "#{plan}", 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
~             

subscriptions_controller.rb

 def create
    plan = params[:subscription][:plan]
    params[:subscription].delete(:plan)
    @subscription = Subscription.new(params[:subscription])
    @subscription.plan = plan
    @user = User.new(params[:user])
        respond_to do |format|
          if @subscription.save_with_payment(@subscription.plan, @user.email) && @user.save
               @subscription.user_id = @user.id
               @subscription.save
          format.html { redirect_to pages_thankyou_url }
          else
       format.html { render action: "new"  }
              end
        end
 end