I'm trying to build it in a way that's least hacky possible. So we  
could merge it back into trunk.

What I've got so far:

order_controller.rb line 85 (between the PayPal and GCheckout section)

---

# Handle PayPal WPS orders
         elsif params[:payment_type] == 'paypal_wps'
             @order.payment_type = 'paypal_wps'
             @order.licensee_name = 'paypal_wps'
             @order.status = 'P'
             @order.save!
             render :action => 'payment_paypal_wps' and return

---

I'm aware that this is probably not the best way of doing it, but it  
looks like it's the only way. The order has to be saved to database  
before we send it over to PayPal, and at this point, we don't know  
licensee_name yet. So I just put in some dummy value because otherwise  
it won't save. (I didn't think removing the validation for a licensee  
name was a good idea). I also though that stats Pending was the best  
status yet (Maybe we should just leave status out?). Unless of course  
you decide to send licenses to pending payments.

Another problem with this is that the unfinished order stays in the  
database even if the customer cancels (closes browser window) the  
order at the confirm step.

Created a new view based off the gcheckout view:

payment_paypal_wps.rhtml

---

<h1>Confirm</h1>

<% unless @order.errors.empty? %>
<div id="errors">
   <h2 style="margin-bottom:14px;color:red">Problems</h2>
   <ul>
   <% @order.errors.each_full do |message| %>
     <li><%= message %></li>
   <% end %>
   </ul>
</div>
<% end %>

<p>Your license key, along with your purchase receipt, will be emailed  
to your PayPal email address.</p>

<div class="d cl"></div>

<div class="narrow">
        <% if @order.items_count == 1 %>
        <h2>Your Item</h2>
        <% else %>
        <h2>Your Items</h2>
        <% end %>

        <table id="order">
                <% for item in @order.line_items -%>
                <%   if item.quantity > 0 -%>
                <tr>
                        <td class="price"><%= item.quantity %> @ <%= number_to_currency  
item.unit_price %> each</td>
                        <td class="prod"><%= item.product.name %></td>
                </tr>
                <%   end -%>
                <% end -%>
                <% if @order.coupon -%>
                <tr>
                        <td class="price">-<%= number_to_currency(@order.coupon_amount) %></
td>
                        <td><%= @order.coupon.description %></td>
                </tr>
                <% end -%>
                <tr id="total">
                        <td></td>
                        <td>Total: <strong><%= number_to_currency @order.total %></strong></
td>
                </tr>
        </table>

</div>

<% if $STORE_PREFS['google_analytics_account'] != "" -%>
<script src="http://checkout.google.com/files/digital/urchin_post.js"  
type="text/javascript"></script>
<% end -%>

<%
   if $STORE_PREFS['google_analytics_account'] != ""
     form_onsubmit = "javascript:setUrchinInputCode();return  
validate();"
   else
     form_onsubmit = "javascript:return validate();"
   end
-%>

<div class="d"></div>

<p>
        <form action="https://www.paypal.com/cgi-bin/webscr" method="post"  
style="float:right;">
                <input type="hidden" name="cmd" value="_xclick">
                <input type="hidden" name="business" value="sa...@azuretalon.com">
                <input type="hidden" name="item_name"
                value="Azure Talon Software Purchase">
                <input type="hidden" name="item_number"
                value="<%= @order.id %>">
                <input type="hidden" name="amount" value="<%= @order.total %>">
                <input type="hidden" name="no_shipping" value="1">
                <input type="hidden" name="no_note" value="1">
                <input type="hidden" name="currency_code" value="EUR">
                <input type="hidden" name="bn" value="IC_Sample">
                <input type="hidden" name="return" value="http://store.azuretalon.com/store/order/thanks
">
                <input type="hidden" name="notify_url" value="http://store.azuretalon.com/store/notification/paypal
">
                <input type="submit" name="submit" value="Continue to PayPal">
        </form>
</p>

---

In that last section, I hardcoded a few values, which should be  
dynamically coded if this was merged back (and I case I change domain  
or something, who knows)

Edited a section in new.rhtml:

---
                        <% if false then -%>
                        <p class="creditcards">
                                <%= radio_button_tag 'payment_type', 'cc', !(['paypal',  
'gcheckout'].member? @payment_type), :id => 'creditcard' %>
                                <img src="/images/store/visa.gif" alt="Visa" /><img src="/images/
store/mc.gif" alt="MasterCard" /><img src="/images/store/amex.gif"  
alt="Amex" /><img src="/images/store/discover.gif" alt="Discover" />
                        </p>
                        <p class="paypal" style="font: 10px helvetica">
                                <%= radio_button_tag 'payment_type', 'paypal', @payment_type ==  
'paypal', :id => 'paypal' %>
                                <img src="/images/store/paypal.gif" alt="PayPal" />
                                Shop without sharing your financial information
                        </p>
                        <% end -%>
                        <p class="paypal" style="font: 10px helvetica">
                                <%= radio_button_tag 'payment_type', 'paypal_wps', true, :id =>  
'paypal_wps' %>
                                <img src="/images/store/paypal.gif" alt="PayPal" />
                                Shop without sharing your financial information
                        </p>
                        <% if $STORE_PREFS['allow_google_checkout'] then -%>
                        <p class="gcheckout">
                                <%= radio_button_tag 'payment_type', 'gcheckout', @payment_type ==  
'gcheckout', :id => 'gcheckout' %>
                                <img src="/images/store/gcheckout.gif" alt="Google Checkout" />
                        </p>
                        <% end -%>
---

the 'if false then' are just a way of commenting standard paypal out
the third argument to radio_button_tag is true, because that's the  
only option on my personal store, but if merged back, i think it  
should be @payment_type == 'paypal_wps'

order.rb (the model)

---

   def paypal_wps?
       return self.payment_type != nil && self.payment_type.downcase  
== 'paypal_wps'
   end

---

don't think it's actually required, but I put it in there anyway.

and lastly, not quite finished with that, but here's the gist of it:  
PayPal IPN.

notification_controller.rb

---

   ## Handeling PayPal IPN

     def paypal
        if @request.method == :post
          # use the POSTed information to create a call back URL to  
PayPal
          @query = 'cmd=_notify-validate'
          @request.params.each_pair {|key, value| @query = @query +  
'&' + key + '='
    + value.first if key != 'register/pay_pal_ipn.html/pay_pal_ipn' }

        #POST this data
          http = Net::HTTP.start(PAYPAL_URL, 80)
          response = http.post('/cgi-bin/webscr', @query)
          http.finish

   # PayPal values
          item_name = @params[:item_name]
          item_number = @params[:item_number]
          payment_status = @params[:payment_status]
          payment_amount = @params[:mc_gross]
          payment_currency = @params[:mc_currency]
          txn_id = @params[:txn_id]
          receiver_email = @params[:receiver_email]
          payer_email = @params[:payer_email]
          if response
             if response.body.chomp  'VERIFIED'
                # check the payment status
                if payment_status  'Completed'
                   # should check to see if the txn_id already exists

                    order = Order.find(item_number)
                    order.first_name = @params[:first_name]
                    order.last_name = @params[:last_name]

                    order.email = payer_email
                    if order.email == nil # This shouldn't happen, but  
just in case
                      order.status = 'F'
                      order.failure_reason = 'Did not get email from  
PayPal'
                      order.finish_and_save()
                      return
                    end

                    order.address1 = @params[:address_street]
                    order.address2 = ''
                    order.city     = @params[:address_city]
                    order.company  = @params[:payer_business_name]
#                   order.country  = @params[:address_country_code]
                    order.zipcode  = @params[:address_zip]
#                   order.state    = @params[:address_state]

                    order.transaction_number = txn_id

                    order.status = 'C'

                    order.finish_and_save()
                    OrderMailer.deliver_thankyou(order) if is_live()

                end

             end
          end
        else
           # GET request, wtf
           @text = 'I do not speak GET'
        end
     rescue Net::HTTPError
        @text = 'HTTP error'
     end

---

all i got for now... I hope I'm getting somewhere here

---
Kenneth Ballenegger
www.seoxys.com
seo...@gmail.com

Azure Talon Software
www.azuretalon.com
supp...@azuretalon.com

You could avoid saving the pending order if you can transmit line item  
information to PayPal and get it back, but if you can't, don't worry  
about it. Most e-commerce software that I've seen do the same thing  
and periodically purge the old pending orders.

Andy Kim
Potion Factory LLC

On Apr 5, 2008, at 7:57 AM, Kenneth Ballenegger wrote: