Dwolla Active Merchant Integration Example

README.md

I will attempt to post the commit I did (to a private repo) to get Dwolla integration up and running. Quick and easy, once I figured out the config options, and signed up here for the key/sig: https://www.dwolla.com/applications/create. A "Reflector" account can be used for live-fire testing here: http://developers.dwolla.com/dev/docs/testing.

appcontrollersdwolla_controller.rb

class DwollaController < ApplicationController
  include ActiveMerchant::Billing::Integrations

  def cancel
    backer = Backer.find params[:id]
    flash[:failure] = t('projects.backers.checkout.dwolla_cancel')
    redirect_to new_project_backer_path(backer.project)
  end

  def confirm
    backer = Backer.find(params[:id])
    notify = ActiveMerchant::Billing::Integrations::Dwolla::Notification.new(params.to_json)
    if notify.complete?
      backer.update_attributes(
        :key => checkout.payment_info.first.transaction_id,
        :payment_method => 'Dwolla',
        :payment_token => params[:token]
      )
      backer.build_payment_detail.update_from_service
      backer.confirm!
      flash[:success] = t('projects.backers.checkout.success')
      redirect_to thank_you_path
    else
      #flash[:failure] = t('projects.backers.checkout.dwolla_error')
      flash[:failure] = "#{t('projects.backers.checkout.error_header')} #{params[:error_description]}"
      return redirect_to new_project_backer_path(backer.project)
    end
  end
end

appviewsprojectsbackersreview.html.haml

// snipped out some bits, but this is what was added
    #dwolla_payment
      - payment_service_for("backer-#{@backer.id}", 
        Configuration.find_by_name('dwolla_destination_id').value,
          :credential2 => Configuration.find_by_name('dwolla_key').value,
          :credential3 => Configuration.find_by_name('dwolla_secret').value,
            :amount => @backer.display_value.gsub(/[^0-9.]/,'').to_i,
          :currency => 'USD',
          :service => :dwolla,
          :html => { :id => 'payment-form' }) do |service| 
        - bu = @backer.user
        - service.customer(:first_name => bu.first_name, :last_name => bu.last_name, :phone => bu.phone_number, :email => bu.email)
        - service.billing_address(:city => bu.address_city, :address1 => bu.address_street, :address2 => bu.address_number, :state => bu.address_state, :country => 'USA', :zip => bu.address_zip_code)
        - service.shipping '0.00'
        - service.tax '0.00'
        - service.notify_url url_for(done_dwolla_path(@backer, :only_path => false))
        - service.redirect_url url_for(thank_you_path(@backer, :only_path => false))
        - service.return_url url_for(confirm_dwolla_path(@backer, :only_path => false))
        %h1
          %input(type='submit' value="Pay with Dwolla")

configenvironment.rb

# Load the rails application
require File.expand_path('../application', __FILE__)

# Initialize the rails application
Catarse::Application.initialize!

require 'money'
require 'active_merchant'
require 'active_merchant/billing/integrations/action_view_helper'
ActionView::Base.send(:include, ActiveMerchant::Billing::Integrations::ActionViewHelper)

configroutes.rb

Catarse::Application.routes.draw do
  # this is what was added
  resources :dwolla do
    member do
      get :done # er
      get :cancel
      get :confirm
    end
  end
end

dwolla_controller.rb

class DwollaController < ApplicationController
  include ActiveMerchant::Billing::Integrations

  def cancel
    backer = Backer.find params[:id]
    flash[:failure] = t('projects.backers.checkout.dwolla_cancel')
    redirect_to new_project_backer_path(backer.project)
  end

  def confirm
    backer = Backer.find(params[:id])
    notify = ActiveMerchant::Billing::Integrations::Dwolla::Notification.new(params.to_json)
    if notify.complete?
      backer.update_attributes(
        :key => checkout.payment_info.first.transaction_id,
        :payment_method => 'Dwolla',
        :payment_token => params[:token]
      )
      backer.build_payment_detail.update_from_service
      backer.confirm!
      flash[:success] = t('projects.backers.checkout.success')
      redirect_to thank_you_path
    else
      #flash[:failure] = t('projects.backers.checkout.dwolla_error')
      flash[:failure] = "#{t('projects.backers.checkout.error_header')} #{params[:error_description]}"
      return redirect_to new_project_backer_path(backer.project)
    end
  end
end

environment.rb

# Load the rails application
require File.expand_path('../application', __FILE__)

# Initialize the rails application
Catarse::Application.initialize!

require 'money'
require 'active_merchant'
require 'active_merchant/billing/integrations/action_view_helper'
ActionView::Base.send(:include, ActiveMerchant::Billing::Integrations::ActionViewHelper)

Gemfile

# added
gem 'activemerchant'

review.html.haml

// snipped out some bits, but this is what was added
    #dwolla_payment
      - payment_service_for("backer-#{@backer.id}", 
        Configuration.find_by_name('dwolla_destination_id').value,
          :credential2 => Configuration.find_by_name('dwolla_key').value,
          :credential3 => Configuration.find_by_name('dwolla_secret').value,
            :amount => @backer.display_value.gsub(/[^0-9.]/,'').to_i,
          :currency => 'USD',
          :service => :dwolla,
          :html => { :id => 'payment-form' }) do |service| 
        - bu = @backer.user
        - service.customer(:first_name => bu.first_name, :last_name => bu.last_name, :phone => bu.phone_number, :email => bu.email)
        - service.billing_address(:city => bu.address_city, :address1 => bu.address_street, :address2 => bu.address_number, :state => bu.address_state, :country => 'USA', :zip => bu.address_zip_code)
        - service.shipping '0.00'
        - service.tax '0.00'
        - service.notify_url url_for(done_dwolla_path(@backer, :only_path => false))
        - service.redirect_url url_for(thank_you_path(@backer, :only_path => false))
        - service.return_url url_for(confirm_dwolla_path(@backer, :only_path => false))
        %h1
          %input(type='submit' value="Pay with Dwolla")

routes.rb

Catarse::Application.routes.draw do
  # this is what was added
  resources :dwolla do
    member do
      get :done # er
      get :cancel
      get :confirm
    end
  end
end