validation of integer and unique values

itram

Link to test case:
Debugger code (debug.datatables.net):
Error messages shown:
Description of problem:
I use editor and have a column which must be integer and unique.
I set in the column attributes:

label: "",
                    name: "",
                    attr: {
                        type: 'number',
                        min: 1,
                        max: 999,
                        step: 1
                    }

on the server side controller I set :

validator(Validate::unique(ValidateOptions::inst()
                                ->message('number already exists')))

and a custom validation to validate only integer number:

->validator(function ($val, $data, $opts) {
                                if ($val === null) {
                                        return true;
                                } else if (!is_numeric($val) || !is_int(intval($val))) {
                                        return  'Number must be integer';
                                }
                        })

If a enter an integer number which already exists, the unique validation works fine and advice that number exists.
But If I enter a decimal number (example 7.5) and the integer part exists (number 7 already exists) them the input is truncated to 7 (only integers are accepted) but the unique validation is not triggered.

Is there any solution for that?

thanks in advance

itram

sorry, forget the above. I was converting to integer before testing if integer