how to validate texboxes whose values depend on another textboxes values

[Franklin Brauning]

Suppose I have several textboxes containg formulas

 #textbox { id=a }     <-- user sets text to "b + 1"
 #textbox { id=b }     <--- user sets text to "2"

to validate a I have to get b's text. How could this be done with nitrogen

[Jesse Gumm]

Hi Franklin,

The trick to this is using a #custom{} validator.

Inside the event function that handles the validator, you can call wf:q/1 as if it were any other kind of postback (because it is indeed a typical postback).  This is the key to how the #confirm_same{} validator works: https://github.com/nitrogen/nitrogen_core/blob/master/src/validators/validator_confirm_same.erl

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Jesse Gumm
Owner, Sigma Star Systems
414.940.4866 || sigma-star.com || @jessegumm