I'm working on a custom fieldtype that requires some validation via AJAX, which means I need an endpoint to direct my $.get() requests to. I know that accessories support process_x methods but fieldtypes don't appear to offer anything similar.

As far as I can see my options are to create a module (which otherwise I have no need for) or an extension (ditto, really). I noticed that the VZ URL fieldtype uses the sessions_start hook for this but that's not ideal as it's adding a little overhead to every single request, even frontend ones.

Is there a better, simpler option that I'm missing?

1 Answer 1


As far as i know, you cannot do this in a fieldtype in any other way. What i've seen most often is a accompanying module that registers an action so that the method in the module acts as the ajax endpoint.

That's not a huge amount of extra work thought is it really :)

I do fully appreciate what you're saying though, it's a shame it can't all be self contained in the fieldtype :(

  • Yep, I expect that's what I'll end up doing, but I thought I'd double check that there wasn't a better way. Cheers.
    – Dom Stubbs
    Feb 6, 2013 at 13:44
  • Fell free to tick my answer as the correct one ;) Feb 7, 2013 at 13:18
  • I've given in and setup a module but I was going to leave the question open for a few days just in case someone has got a cunning workaround that they've not posted yet. Adding process_x support for fieldtypes is such an obvious feature request but I'm not even sure where to post a FR these days.
    – Dom Stubbs
    Feb 7, 2013 at 15:15
  • Pick an ellislab employee, and do [email protected] Feb 7, 2013 at 17:09

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