Can I add a URL parameter to pre-fill in the donation amount.

[RachelWright]

Hi Guys -

I am trying to figure out a way to pass the contribution amount through a URL parameter. For instance,

base.org?option=com_civicrm&task=civicrm/contribute/transact&reset=1&id=1&donationamount=50

What I'm looking to be able to do is send this link out with various amounts depending on the donor. (Not that I can't send them an email that says please type in X amount, but it would greatly eliminate confusion if I could have the amount pre-filled in for them.)

I found this wiki article but couldn't quite figure out how to tailor it to my needs:
http://wiki.civicrm.org/confluence/display/CRMDOC/Update+custom+fields+in+contributions+and+events+by+passing+variables+in+a+URL

Thoughts?

[Michael McAndrew]

Hey there,

I had a QUICK look at https://github.com/civicrm/civicrm-core/blob/master/CRM/Contribute/Form/Contribution/Main.php and couldn't see how you would do it.. I do remember people talking about it a while ago though (about 7 years ago, or so!) and they gave me the impression that it was possible so I'll ask them to pipe up here in case I am not imagining it.

If it isn't possible, I think it would make a great contribution, if you were able to make it happen. Let me know.

Michael

[Eileen]

I think we had it working - but not through old methods as far as I recall

[Chris Burgess]

Don't think it's supported to do this in core.

Agree that we did something similar years ago by inspecting $_GET probably via awful custom_php methods available then.

Should be pretty easy to do today with extension and form hooks.

Even easier just using JS to inspect the URL.

[Chris Burgess]

Code: [Select]

function populateAmount() {
  var a = document.createElement('a');
  a.href = document.location;
  var amount = a.search.match(/amount=([0-9]+)/)[1];
  jQuery('input.search').val(amount);
}

^ demo in JS

• visit https://gist.github.com/xurizaemon/31eeb8f50f2df6cf5603?amount=1234
  
• copy code from gist
• paste into browser console
• look at search field now populated with amount from URL

[Michael McAndrew]

Naice!

RachelWright - does this help?