gistfile1.rb

class Stripe::StripeTransactionsController < ActionController::Base
    layout "stripe/layout"
    before_filter :authorize!

    def create
        @stripe_transaction = StripeTransaction.create(transaction_params[:stripe_transaction])
        puts @stripe_transaction
        if current_user.stripe_cards.empty?
            session[:return_to] = cart_checkout_path
            redirect_to new_stripe_card_path and return
        end

        @stripe_transaction.stripe_card_id = (params[:stripe_card_id] || current_user.default_stripe_card_id)
        @stripe_transaction.amount = @stripe_transaction.line_items.inject(0) {|sum, item| sum = sum+item.amount.to_i }

        itemlist = @stripe_transaction.line_items.map {|item| "[#{item.purchasable_id} #{item.purchasable_type} #{item.purchasable.amount}]"}.join(", ")

        price_cents = @stripe_transaction.price*100

        charge = Stripe::Charge.create(
          :amount => price_cents,
          :currency => "usd",
          :card => current_user.stripe_customer_id, # obtained with Stripe.js
          :description => itemlist
        )
        if charge.id
            @stripe_transaction.stripe_charge_id = charge.id
            @stripe_transaction.stripe_card_id = StripeCard.where(:api_card_id => charge.card.id).first.id
            @stripe_transaction.notes = itemlist + "- Successfully completed transaction"
            @stripe_transaction.completed = true
            @stripe_transaction.save
        else
            @stripe_transaction.completed = false
            @stripe_transaction.notes = "The transaction did not complete. Please try again."
        end
    end
end

StripeTransaction.rb

class StripeTransaction < ActiveRecord::Base
	has_many :line_items
	accepts_nested_attributes_for :line_items
	belongs_to :user
	belongs_to :stripe_card
end