confirm.html.erb

<h1>Payment Result</h1>

<div>Thank you for your payment.</div>

<h2>Transaction Details</h2>

<table>
  <tr><td>Amount</td><td>$<%= @result.transaction.amount %></td></tr>
  <tr><td>Transaction ID:</td><td><%= @result.transaction.id %></td></tr>
  <tr><td>First Name:</td><td><%= h @result.transaction.customer_details.first_name %></td></tr>
  <tr><td>Last Name:</td><td><%= h @result.transaction.customer_details.last_name %></td></tr>
  <tr><td>Email:</td><td><%= h @result.transaction.customer_details.email %></td></tr>
  <tr><td>Credit Card:</td><td><%= h @result.transaction.credit_card_details.masked_number %></td></tr>
  <tr><td>Card Type:</td><td><%= h @result.transaction.credit_card_details.card_type %></td></tr>
</table>

new.html.erb

<%= @user.f_name %>

<div class="settings_form">

	<%= form_for :transaction,
	     :params => @result && @result.params[:transaction],
	     :errors => @result && @result.errors.for(:transaction),
	     :builder => ApplicationHelper::BraintreeFormBuilder,
	     :url => Braintree::TransparentRedirect.url,
		 #:url => 'http://localhost:3000?test=1',  for testing/debugging
	     :html => {:autocomplete => "off"} do |f| -%>
	  <%= field_set_tag "Customer" do -%>
	    <%= f.fields_for :customer, @user do |c| -%>
	    <%#= f.fields_for @user do |c| -%>  
		  <div><%= c.label :f_name, "First Name" %></div>
	      <div><%= c.text_field :f_name %></div>
	      <div><%= c.label :l_name, "Last Name" %></div>
	      <div><%= c.text_field :l_name %></div>
	      <div><%= c.label :email, "Email" %></div>
	      <div><%= c.text_field :email %></div>
	    <% end -%>

	<br /><br />

	  <% end -%>
	  <%= field_set_tag "Credit Card" do -%>
	    <%= f.fields_for :credit_card do |c| -%>
	      <div><%= c.label :number, "Number" %></div>
	      <div><%= c.text_field :number %></div>
	      <div><%= c.label :expiration_date, "Expiration Date (MM/YY)" %></div>
	      <div><%= c.text_field :expiration_date %></div>
	      <div><%= c.label :cvv, "CVV" %></div>
	      <div><%= c.text_field :cvv %></div>
	    <% end -%>
	  <% end -%>
	  <%= hidden_field_tag :tr_data, Braintree::TransparentRedirect.transaction_data(
	    :redirect_url => confirm_payment_url,
	    :transaction => {:type => "sale", :amount => @amount}
	  ) %>
	
	  <%= f.submit "Submit", :class => "primary button" %>
	<% end -%>

</div>

payments_controller.rb

class PaymentsController < ApplicationController

	  def new
	        @plan = Plan.find(params[:plan_id])
		@user = current_user
	        @amount = @plan.price
	  end

	  def confirm
	    #@result = Braintree::TransparentRedirect.confirm(request.query_string)
  	    #p env["rack.request.form_vars"]
	    @result = Braintree::TransparentRedirect.confirm(CGI.unescape(env["rack.request.form_vars"]))
	
	 if @result.success?
	      render :action => "confirm"
	    else
	      @amount = calculate_amount
	      render :action => "new"
	    end
	  end
	
end

rack.request.form_vars error

NoMethodError in PaymentsController#confirm

undefined method `tr' for nil:NilClass

{"bt_message"=>"Invalid params: transaction[customer][f_name],
 transaction[customer][l_name]",
 "http_status"=>"403",
 "hash"=>"11a2e835f0e5d55fa92ba6e77c670dafd9294122"}

request.query_string error

Braintree::AuthorizationError in PaymentsController#confirm

Invalid params: transaction[customer][f_name], transaction[customer][l_name]

Parameters:

{"bt_message"=>"Invalid params: transaction[customer][f_name],
 transaction[customer][l_name]",
 "http_status"=>"403",
 "hash"=>"11a2e835f0e5d55fa92ba6e77c670dafd9294122"}