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From: Lew <noone@lewscanon.com>
Newsgroups: comp.lang.java.help
Subject: Re: How to dynamically post a variable number of products to Paypal?
Date: Wed, 18 May 2011 15:44:58 -0400
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On 05/18/2011 02:51 PM, markspace wrote:
> On 5/18/2011 1:20 AM, macoln wrote:
>> I have some shopping cart code that I took over when I started with a
>> company, but unfortunately I'm weak on Java and integrating with
>> Paypal. Here is the form that sends data to Paypal when a customer
>> checks out of the shopping cart. I can get it to send one product,
>> but I would like it to include data on all the products purchased
>> from the cart. I am thinking logic:iterate will help me? But then how
>> do I increment the "on#" and "os#" when presented with a variable
>> amount of products?
>
> No, logic:iterate is for output, not input. This form outputs HTML to the user
> so they can click the accept button.
>
> To increment variables that you output to the user, change the variables in a
> scriptlet, JSP, Struts Action or the like before you send those to the user.
>
>  > <img name="Paypal" src="/images/qujiesuan.gif" class="jiesuan" border=0
> style="cursor: pointer;" onclick="javascript:goPayPal();" />
>  > </form>
>
> This is what sends your information to PayPal. "javascript:goPayPal()"
>
> Unfortunately I don't know PayPal or JavaScript, you might want to check
> PayPal's tech support to understand what that script does.

JSF components for input incorporate this type of logic under the hood, 
typically by appending an index to the specified name.

-- 
Lew
Honi soit qui mal y pense.
http://upload.wikimedia.org/wikipedia/commons/c/cf/Friz.jpg