Which files should I change to call my php functions during the checkout process?

[jdl]

Hi Zenners,

Since I sell software for mobile applications, I need to add the following behavior to my checkout process:

1. When the customer checks out, the checkout php code needs to call my php function that generates a unique code for the purchase.
2. I need to also modify the php code to call my function that sends the user's mobile device an SMS text message with a URL and the generated code.

I'm not sure what php file or files to modify? Any pointers to help me make these modifications would be greatly appreciated.

When I find the file or files to modify, I'll copy them to a myTemplates directory (keeping the same directory structure) and modify them there so my changes will be preserved with zen_cart upgrades. Is this the correct procedure?

I also need to modify the user registration information to include the user's mobile phone carrier (as a dropdown box) and then save that carrier_id in the zen_customers table. I'm guessing that making these two types of changes (to the checkout php code to call my php functions and to modify the user registration to include the carrier) will be similar. Some pointers as to which files to modify would greatly speed up my developmernt process, and they would be greatly appreciated!

Thanks,
jdl

[Kim]

You only want these things to happen *after* they have paid?

[jdl]

Yes, after they have paid. Why?

They'll be paying by credit card or paypal account; so after I capture their cc information and send it to my merchant account and the zen_orders_products table is updated, at that point I'll generate the code and also store it in the zen_orders_products table. Does that makes sense? Is there another flow that would make more sense?

jdl

[Merlinpa1969]

If your manually generating the code then just put the code in the comments section of the exsisting order.

[jdl]

I don't want to parse it from their comments if they have comments--I'd prefer it to be in a separate db field.

jdl

[Merlinpa1969]

It wont parse it from the comments,
after they hit confirm they can add anything to that section anyway....

I use it for all kinds of things.,
usually tracking codes and such