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jQuery Validation required returns false and still validates the input

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+1 A:

Update based on comments: This function:

dob_year: { required: function(element) { return false;}}

I saying "the dob_year element is never required". What the function returns doesn't determine if the element passes validation, it determines if it's required, and by return false; it's saying that it's never required...so it's really not validating anything. If you want a custom validation method, you need to go a different route, by adding a custom method like this:

jQuery.validator.addMethod("customMethod", function(value, element) { 
  return false; 
}, "This will never pass!");

Then call it like this:

dob_year: { customMethod: true; }

You can see a working demo doing exactly this here.

Nick Craver 2010-04-20 00:54:28

Sorry I posted it wrong ... actually the code is dob_year // dob_year: {required: function(element){return false;}},

Esteban Feldman 2010-04-20 01:01:06

@Esteban - In that case, what do you *want* it to do? The dependency callback returns whether it's required...currently your function is saying "it's **never** required", I think you want `return true;` here if you want the required message to always pop up.

Nick Craver 2010-04-20 01:10:34

My code is a little more complicated than that, what I'm trying to show is that no matter what that function is returning for the plugin will be always valid. I will do a stand alone test.

Esteban Feldman 2010-04-20 01:15:19

@Esteban - I think what you're after here is the custom function, not piggybacking on required's dependency callback...see my updated answer for how to do this.

Nick Craver 2010-04-20 01:16:55

@nick that did it. But one thing I don't understand ... if a function can be used in required... why doesn't work as per the API documentation? http://docs.jquery.com/Plugins/Validation/Methods/required#dependency-callback btw, Thanks a lot!

Esteban Feldman 2010-04-20 01:33:24

@Esteban - It does work that way :) If your function returns `true`, it's required, if not it's not required, see here for a quick test: http://jsfiddle.net/rsTuc/1/ This is often used in a case like `txtOther` is only required if "Other" is your selected radio button value, something like that.

Nick Craver 2010-04-20 01:42:48

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jQuery Validation required returns false and still validates the input

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