Track the path in the nested structures

[naquad]

Hello,

I'm evaluating various validation libraries in order to find one that is expressive and able to validate nested structures. Respect is great except that I can't find the path of the failed key. What I mean:

<?php

use Respect\Validation\Exceptions\NestedValidationException;
use Respect\Validation\Validator as v;

$acl_update_request = [
    15 => [
        'groups' => [1, 2, 3, 4, 5],
        'permissions' => [
            'perm1' => true,
            'perm2' => false,
            'perm3' => 'boom!',
        ]
    ]
];

try {
    v::arrayVal()->
        each(v::arrayVal()->each(v::boolVal())->
        each(v::boolVal()))->
        assert($acl_update_request);
} catch(NestedValidationException $exception) {
    var_dump($exception->getMessages());
}

I can't get "15.permissions.perm3" in any way. W/o this feature validation loses half of its value. The goal is to get something like:

[
  15 => [
    'permissions' => [
      'perm3' => [
        'must be a boolean value'
      ]
    ]
  ]
]

My case is quite a common one: fat forms and complex APIs. If validation can't say exactly what is wrong, the usage and debugging become a nightmare.

Are there any plans for tracking paths?

Thank you.