CiviCRM Community Forums (archive)

I would suggest you should use hooks for this instead of modifying core code. ( http://wiki.civicrm.org/confluence/display/CRMDOC/CiviCRM+hook+specification )

If you still want to modify code you should check:

CRM_Price_BAO_Set::processAmount( ) in CRM/Price/BAO/Set.php

Kurund

hmm, yes. but the preferred approach, IMO would have been to write a patch to core to add a "priceset hook" and then use the hook to add a 5% surcharge

lobo

I just spoke to Brad, the developer who solves all problems I can't.  He will be working on this tomorrow and friday.  He is going to try to add a hook, perhaps utilizing the already existing "payment processor" hook.  I directed him to the forum.  Here is what we are trying to do:

1.  Add an automatic 5% charge onto all CC payments.  This is not too hard...
2.  Add a line item in the receipt and in the DB record that specifies this amount.  This has proven to be quite difficult.

Any insight you have will be appreciated, he is MUCH faster and better at code than I am so he will actually understand what you say. 

If he creates a new hook, I will post it to be added to the core.  I will also post a 'how-to' example on utilizing the hook in a module.

-maria