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Core: Validate inputs with duplicate name / name[] arrays, instead of just the first item - #2498

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bompus wants to merge 2 commits into
jquery-validation:masterfrom
bompus:allow-input-arrays
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Core: Validate inputs with duplicate name / name[] arrays, instead of just the first item#2498
bompus wants to merge 2 commits into
jquery-validation:masterfrom
bompus:allow-input-arrays

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@bompus

@bompus bompus commented Sep 4, 2024

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Description

Replaces #2000 and #2431 with simpler logic, and I believe that .elements() should return all of the eligible elements.

Previously, if you had 2+ inputs using name arrays, such as:

<input type="text" name="todo_item[]" data-rule-required="true" />
<input type="text" name="todo_item[]" data-rule-required="true" />
<input type="text" name="todo_item[]" data-rule-required="true" />

It would only hit validation on the first input in the array, allowing all the remaining inputs with the same name to remain empty.

Technically, I'm pretty sure the following, without using [] syntax would have the same problem:

<input type="text" name="first_name" data-rule-required="true" />
<input type="text" name="first_name" data-rule-required="true" />
<input type="text" name="first_name" data-rule-required="true" />

I'm not familiar with the testing framework, but please review the idea behind this PR first, and if you're confident that it will be merged if tests are included, I'll dig deeper into testing.

Comment thread src/core.js
Comment on lines +462 to +469
var type = element.attr( "type" );
if ( type === 'checkbox' || type === 'radio' ) {
// only check the first checkbox/radio input ( https://github.com/jquery-validation/jquery-validation/pull/2431#issuecomment-1172835268 )
if ( element.name in checkedCache ) {
continue;
}
checkedCache[ element.name ] = true;
}

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This is not clear why we check only first checkbox?

What about the cases when we ask user to check boxes which labels does not have a letter?

Comment thread src/core.js
Comment on lines -660 to +675
// Select only the first element for each name, and only those with rules specified
if ( name in rulesCache || !validator.objectLength( $( this ).rules() ) ) {
if ( name in rulesCache ) {
return true;
}

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Actually this is correct, that we do not allow elements with the same name. I believe this is by RFC. Though I could be wrong, because I did not work with checkbox/radio a lot.

@KES777

KES777 commented Jan 26, 2025

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@bytestream I am not familiar with checkbox/radio input types, but it looks like they try to resolve a different problem.

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3 participants