Advanced Stripe Integration Training: Customers + Subscriptions

app.rb

require 'sinatra'
require 'sinatra/reloader' if development?
require "stripe"
Stripe.api_key = "sk_test_***"

get '/' do
  # Output index.erb template to user
  erb :index
end

get '/customers' do
  # Get a list of ten customers
  customers = Stripe::Customer.all(:limit => 10)
  
  # Store customer list in an instance variable
  @c = customers.data
  
  #Output customers.erb template to user
  erb :customers
end

get '/customer/:cid' do
  # Output params hash in bash
  puts params.inspect    
  
  # Retrieve customer ID from params hash  
  cid = params[:cid]
  
  # Retrieve customer object from Stripe API
  # Store customer object in an instance variable
  @customer = Stripe::Customer.retrieve(cid)
  
  # Show customer.erb template to user
  erb :customer
end

post '/charge' do
  # Output the params hash with the values from Checkout in the bash
  puts params.inspect
  
  # Store Stripe Token and Customer Email Address in local variables
  token = params[:stripeToken]
  email = params[:stripeEmail]
  
  # Create a new Customer
  # Store the Response in a local variable
    customer = Stripe::Customer.create(
      :source => token,
      :email => email,
      :description => "Ruby customer"
    )
    
    # Charge the Customer instead of the card
    Stripe::Charge.create(
        :amount => 2000, # in cents
        :currency => "eur",
        :customer => customer.id
    )
    
    # Output the Customer ID to the user
    "Successfully created customer with ID: #{customer.id}"
end

customer.erb

<h1><%= @customer.email %> // <%= @customer.id %></h1>

<h2># Subscriptions: <%= @customer.subscriptions.total_count %></h2>

<ol>
    <% @customer.subscriptions.each do |sub| %>
        <li><%= sub.plan.name %></li>
    <%end%>
</ol>

customers.erb

<table>
    <% @c.each do |customer| %>  
        <tr>
              <td><%= customer.id %><td>
              <td><%= customer.email %></td>
              <td><a href="../customer/<%= customer.id %>">Subscriptions [<%= customer.subscriptions.total_count %>] </a></td>
        </tr>
    <% end %>
</table> 

index.erb

<form action="/charge" method="POST">
  <script
    src="https://checkout.stripe.com/checkout.js" class="stripe-button"
    data-key="pk_test_****"
    data-amount="2000"
    data-name="schaeffonline.de"
    data-description="2 widgets"
    data-image="https://cdn.shopify.com/s/files/1/0302/2969/products/great-cookie-m_and_m-cookie-03_1024x1024.jpg"
    data-locale="auto"
    data-zip-code="true"
    data-currency="eur">
  </script>
</form>