CODEWITHSUNDEEP
asp.net-mvcvalidationmodel-validationfoolproof-validation
justiceorjustus
justiceorjustus

Reputation: 1965

Conditional Validation ie. Requiring a field only if a certain radio button is checked?

This is more of a pointing in the right direction sort of thing. I'm currently working on a project where a handful of fields will be hidden until a radio button is checked, therefore also not required until then. So tick the specific radio button, fields show up and they are now required on submit with the [Required] DataAnnotations attribute in the model.

I went down the path of trying to use MVC Foolproof and [RequiredIf], but didn't have much luck considering the outdated js files necessary and was wondering if someone else had a simpler solution.

I appreciate any input. I feel like this isn't too uncommon of a task but had a lot of difficulty finding a solution via Google.

Upvotes: 1

Views: 1389

Answers (2)

aholtry
aholtry

Reputation: 2753

I suggest that you use angularjs for this as it is built for it. If you are not familiar with angular validation, here is a great article in scotch where it gives a really good demonstration. Good luck!

Hide and show fields based on ng-if directive and make field required using the required attribute. That's it!

<input type="text" 
       name="name" 
       class="form-control" 
       ng-model="user.name" 
       ng-if="user.required" 
       required>

Angular Validation

Upvotes: 2

Grizzly
Grizzly

Reputation: 5953

I am sure you can accomplish this with using Javascript/Jquery.

Like so:

if($('#idNameOfRadioBtn').is(':checked')){
    $('#idOfFieldNameThatIsNowRequired').attr('required');
}
else{
    $('#idOfFieldNameThatIsNowRequired').removeAttr('required');
}

Let me know if this helps!

Upvotes: 2

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