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Collect payments from wepay in your rails application.

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README.rdoc

wepay-rails

Wepay-Rails allows your rails app to accept payments with Wepay (www.wepay.com).

Features

  • Built in IPN that listens to push notifications from wepay and updates saved checkout records for you

  • Allows you to fetch your access token easily through a web interface

  • Built in API tools to allow you to make all wepay-api calls easily

  • Built in ability to send your customers to wepay to make payments and handles their trip back for you

  • Saves the current state of every checkout

  • Configurable

Installation

To install it, add this to your Gemfile

gem 'wepay-rails'

To create your WepayCheckoutRecord model and migration:

script/rails g wepay_rails:install

This will create 3 files for you, a migration file for a table to hold the checkout results, the model and a wepay.yml.example file. Next run:

rake db:migrate

WepayCheckoutRecord will be updated by wepay's IPN system as changes to the checkout change - such as the status. Wepay-rails handles those IPN notifications for you. You can write observers watching the WepayCheckoutRecord model if you need to have something specific occur when the checkout changes. Also, since a model is created for you, you can also track changes to it's state through state machine or paper trail or some other gem of your liking. Hook up WepayCheckoutRecord how you like.

Modify config/wepay.yml.example to your needs and copy it to config/wepay.yml.

Assuming that you have:

  1. created an account on wepay

  2. created a user to accept the payments

  3. created your application for your account

  4. set your wepay.yml file with the info it needs to talk to the wepay api minus the access_token

You can now get your access token.

To fetch your access_token, open a browser and go to:

your.railsapp.com/wepay/authorize

Login at the prompt or register. You will be sent back to your app and you should have gotten an access_token. Copy it to your wepay.yml file and restart your app.

Example

I created a controller called finalize_controller and I use it for a landing page when the customer is finished paying their order. The other controller I created is a checkout_controller - I send my customers to it when they click checkout in the cart. Your app is surely different than mine. Do what makes sense to you. For now, here's a small example…

app
  |_ controllers
               |_ purchase
                      |_ checkout_controller.rb
                      |_ finalize_controller.rb

Tell wepay-rails where to send the customer after they come back from wepay with a complete payment. Open wepay.yml:

after_checkout_redirect_uri: "http://www.example.com/purchase/finalize"

Create a controller that will send the user to wepay - notice it includes WepayRails::Payments:

class Purchase::CheckoutController < ApplicationController
    include WepayRails::Payments

    def index
        cart = current_user.cart # EXAMPLE - get my shopping cart

        checkout_params = {
            :amount => cart.grand_total,
            :short_description => cart.short_description,
            :long_description => cart.long_description,
        }

        # Finally, send the user off to wepay so you can get paid! - CASH MONEY
        init_checkout_and_send_user_to_wepay(checkout_params)
    end
end

Finally, the controller I use for finalizing the checkout - AKA - the controller the user is sent back to after his/her trip back from wepay. A checkout_id is passed in through params so you can access the WepayCheckoutRecord, make a call to wepay to get the checkout info - whatever you want to do (See the wiki for more info on API calls):

class Purchase::FinalizeController < ApplicationController
  def index
    # Fetch the WepayCheckoutRecord that was stored for the checkout
    wcr  = WepayCheckoutRecord.find_by_checkout_id(params[:checkout_id])

    # Example: Set the association of the wepay checkout record to my cart - then, on to order.
    cart = current_account.cart
    cart.wepay_checkout_record = wcr
    cart.save!

    # Convert cart to an order?? Move to observer of WepayCheckoutRecord??
    cart.convert_cart_to_order if wcr.state == 'authorized'

    render :text => "Hooray - you bought some widgets!"
  end
end

Special Thanks to additional contributers of Wepay-Rails

Contributing to wepay-rails

  • Check out the latest master to make sure the feature hasn't been implemented or the bug hasn't been fixed yet

  • Check out the issue tracker to make sure someone already hasn't requested it and/or contributed it

  • Fork the project

  • Start a feature/bugfix branch

  • Commit and push until you are happy with your contribution

  • Make sure to add tests for it. This is important so I don't break it in a future version unintentionally.

  • Please try not to mess with the Rakefile, version, or history. If you want to have your own version, or is otherwise necessary, that is fine, but please isolate to its own commit so I can cherry-pick around it.

Copyright

Copyright © 2011 Adam Medeiros. See LICENSE.txt for further details.

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