Small controller & view extension to ease WebMoney payment processing.

1. Configure your wallet in the config/webmoney.yml file:

   development: wallet: "R123456789012" secret: "mysupersecret123" production: wallet: "R098765432109" secret: "myproductionsecret"

2. Add new action to your payment controller:

   class PaymentsController < ApplicationController

   Disable forgery protection for webmoney accepting action

   skip_before_filter :verify_authenticity_token, :only => :webmoney_payment

   ...

   def webmoney_payment @payment = current_user.payments.build( :currency => webmoney.currency, :amount => webmoney.params[:payment_amount] )

    if webmoney.prerequest? # Pre-request to check that your site is available
      if @payment.valid?
        render :text => "YES"
      else
        render :text => @payment.errors.full_messages.join("; ")
      end
    elsif webmoney.valid_payment? # Payment callback
      if @payment.save
        render :text => "Success"
      else
        Rails.logger.error("Webmoney payment error!")
   
        render :text => "failure"
      end
    else # Payment invalid
      raise WebmoneyAcceptor::InvalidTransaction
    end
   

   end end

Important: Payment model is not provided by the plugin. You should create it by yourself.

3. Add acction to your routes:

   ActionController::Routing::Routes.draw do |map| ...

   map.resources :payments, :collection => {:webmoney_payment => :post}

   ... end

4. Add WebMoney payment form to your view:

   <% webmoney_payment_form(@amount, :payment_desc => "This is your payment description") do %> Confirmation text goes here

   <%= submit_tag("Pay") %> <% end %>

5. Profit! :)

You can use multiple wallets to accept payments. The only thing you should do for this is to provide wallet and secret to form and validation method.

In your view:

<% webmoney_payment_form("Z123456789012", @amount) do %>
  ...
<% end %>

In your controller:

def webmoney_payment
  ...

  if webmoney.prerequest?
    ...
  elsif webmoney.valid_payment?("mycustomsecret123")
    ...
  end
end

Some additional methods that can be useful:

• webmoney.currency - currently used WebMoney currency (:wmr, :wmz, etc)
• webmoney.params - a hash of WebMoney-related params (all params that start with "LMI_")

No tests yet :( You can fork this plugin at GitHub (http://github.com/dekart/webmoney_acceptor) and add your own tests. I'll be happy to accept patches!

./script/plugin install git://github.com/dekart/webmoney_acceptor.git

Written by Alex Dmitriev