RailsでECサイトを作る！【決済機能の追加⑴】

$ rails g controller charges

class ChargesController < ApplicationController
    
    def new
    end
    
    def create
      Stripe.api_key = ENV.fetch('STRIPE_SECRET_KEY')

      # Token is created using Checkout or Elements!
      # Get the payment token ID submitted by the form:
      token = params[:stripeToken]
            
      charge = Stripe::Charge.create({
          amount: 999,
          currency: 'usd',
          description: 'Example charge',
          source: token,
      })
    
    rescue Stripe::CardError => e
      flash[:error] = e.message
      redirect_to new_charge_path
    end
end

resource :charge, only: [:create]

Rails.configuration.stripe = {
  :publishable_key => ENV['STRIPE_PUBLISHABLE_KEY'],
  :secret_key      => ENV['STRIPE_SECRET_KEY']
}

Stripe.api_key = Rails.configuration.stripe[:secret_key]

<%= form_tag charges_path do %>
  <article>
    <% if flash[:error].present? %>
      <div id="error_explanation">
        <p><%= flash[:error] %></p>
      </div>
    <% end %>
    <label class="amount">
      <span>Amount: </span>
    </label>
  </article>

  <script src="https://checkout.stripe.com/checkout.js" class="stripe-button"
          data-key="<%= Rails.configuration.stripe[:publishable_key] %>"
          data-description="payment"
          data-amount="500"
          data-locale="auto">
   </script>
<% end %>

gem 'dotenv-rails', groups: [:development, :test]

STRIPE_PUBLISHABLE_KEY="pk_test_~~~~~~~~~~~"
STRIPE_SECRET_KEY="sk_test_~~~~~~~~~~~~"

/.env