July 2008

Debugging the Mysterious "An illegal choice has been detected. Please contact the site administrator." Error

The Drupal Form API is a wonderful thing… once you’ve been using it long enough, it’s easy to forget all of the laborious validation and post-submit processing you used to do by hand for each and every HTML form in your solution.

The FAPI does things its own way, though, and if you’re building especially complex forms that involve multiple steps or dynamically generated options, you may encounter the following error upon submitting your form:

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  • @mikesusz Yeah, that's new. Have to see if it's any better in Rindge; historically I'm lucky to get 1 ATT bar there. 5 years 19 weeks ago
  • Holy crap dude! Getting 4 bars of reception from AT&T at the house. It's not 3G, but it's a big improvement. #fb 5 years 19 weeks ago
  • Enjoying this weather while it lasts. which won't be long! #fb 5 years 19 weeks ago
  • @taccuosti You as King Solomon? "This is truly alarming!" 5 years 19 weeks ago
  • @prouty Hmm, I think you'd have to set up some kind of list with specific rules like that - but I like the idea. 5 years 19 weeks ago

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Andy Chase
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