CODEWITHSUNDEEP
jqueryjquery-validate
Saumini Navaratnam
Saumini Navaratnam

Reputation: 8850

JQuery validation rule depends on another rule

I have a form where the required field is depend on another form field value. So the required rule may be true or false depend on the other field. The issue is accept rule should be there if only the required is true. How can I do that?

...,
fieldA: {
     maxlength: 3,
     accept: "[0-9]{3}",
     required: function() {
          if($('#fieldB').val() == 'ABCD') {
               return false;
          } else {
               return true;
          }
     }
},...

Thanks in advance.

Upvotes: 0

Views: 1251

Answers (2)

Saumini Navaratnam
Saumini Navaratnam

Reputation: 8850

I didn't realize the 'accept' rule is a custom rule. I edited the code to check whether its an optional field. this.optional(element)

jQuery.validator.addMethod("accept", function(value, element, param) {
    return this.optional(element) || value.match(new RegExp("^" + param + "$"));
});

@Barmar Thanks for the help.

Upvotes: 1

Jake
Jake

Reputation: 165

Unfortunately your required function will likely only get called when the form is rendered, and won't update the dependent field as the independent one changes. You could use a dymanic ui library like react or knockout, or you could simply bind a .change() handler to the independent field that manipulates the attributes of the other.

You could also bind something to .submit() that prevents submission if the configuration is not correct.

Upvotes: 0

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