CiviCRM Community Forums (archive)

Dear all,

At first, I wish you had a great summer :-).

I'm looking for a solution to multiply the total for my online registration by the number of night the user will stay at the event.

So, I create 3 html fields and the corresponding query under the REGISTER template (or the corresponding subcontent). But now, I don't know how to :

• handle the control and repopulate of the field (when the user click on register with a business error on the page - ie : the arrival date is higher then the departure one
• transmit those fields to the confirm screen (and how to use them in the confirm template to display the real amout)

I don't know if my question is clear but, basically I need to know :

• how to add a custom field in a template from the code
• how to handle integrity control of those fields on submit
• how to re-populate those fields when the user come back to this screen (error or previous from the confirm screen)
• how to transfer and handle the values of those fields in the previous template of the online process (confirm screen for example)

Many thanks for your help,
Fred

Dear Pete,

Thank you for your answer but...I don't know where to find the interesting links under the forum or the document section.
So can you please send me the links.

Many thanks,
Fred

Thank you ; I've already read this documentation but it doesn't answer to my question.

My need is to multiplicate, by the number of night, the total fee for each subscriber.

So I really need to know how I can extend, in a programmatic way, the register form to add those field and how to collect those information in the confirm screen.

Or maybe I'm totally wrong and there's a way to do this without dev with my CiviCRM 3.3 (with Drupal).

Many thanks,

Hi Fred,

In case you are still looking for this - or in case others are - you're looking to modify the calculation in:
/templates/CRM/Price/Form/Calculate.tpl (copy it -> put it in a CiviCRM custom templates folder so that modifications will not be lost upon upgrade).

If you are not working with price sets you can also look into using hook_civicrm_buildAmount().
http://wiki.civicrm.org/confluence/display/CRMDOC40/CiviCRM+hook+specification

-- Karin