Handling Decrement?

Hello,

I need a sollution for the following scenario.

My modX website has a listing of widgets for sale. There are 20 available. A user fills out a simple form and buys 2 widgets. The form is just e-mailed to the operator of the site.

How do I decrement the number available so that the next person that visits the widgets page sees the correct number of widgets available, which would be 18 in this case?

I know that full blown ecommerce apps such as oscommerce handles such but, I really don’t want to try incorporating an ecommerce sollution for just this one variable.

How would something like this be handled? Is it possible?

Any help is appreciated.

Thanks
___________
Banta

Interesting question! The amount of widgets could be stored in a chunk. And the required calculation could be done using a snippet.
However, the snippet must be triggered by a form-element, providing the parameter of how many items do decrement.
Is it possible to link a snippet to a form/submit()? I don’t know it - but I would like to know it!
Anyone?

No Ideas on this?

Is there an existing module that I can pick apart that might handle it?

Thanks

In the meantime I posted my version of your question here:
http://modxcms.com/forums/index.php/topic,5971.msg42317.html#msg42317
I think if you read the replies you’ll get an idea of how to do the decrement using a form/snippet combo.