How to validate your PESEL number in Orbeon Forms?

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Hi Władysław,

You can do this type of validation with XPath. For instance, I put below
some XPath I wrote in the past to validate the Swiss OASI Number. That one
is a 13-digit number, and the check in the last digit (like PESEL), and it
follows the EAN-13 regulations (not sure about PESEL). Here is the code fo
the Swiss OASI Number, an I hope this can help:

    let
        $digits := translate(., '.', ''),
        $multiplied :=
            for $pos in 1 to 12
            return
                let $multiplier := if ($pos mod 2 = 1) then 1 else 3
                return xs:decimal(substring($digits, $pos, 1)) *
$multiplier,
        $total := sum($multiplied),
        $check := 10 - ($total mod 10),
        $last-digit := xs:decimal(substring($digits, 13, 1))
    return
        $last-digit = $check

-Alex

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function isValidPesel(pesel) {
let weight = [1, 3, 7, 9, 1, 3, 7, 9, 1, 3];
let sum = 0;
let controlNumber = parseInt(pesel.substring(10, 11));

for (let i = 0; i < weight.length; i++) {
sum += (parseInt(pesel.substring(i, i + 1)) * weight[i]);
}
sum = sum % 10;
return (10 - sum) % 10 === controlNumber;
}

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More about PESEL here: https://en.wikipedia.org/wiki/PESEL) in Orbeon Forms?  PESEL is Polish acronym for „Universal Electronic System for Registration of the Population”.   

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Hi Władysław,

I am not sure to have very specific recommendations to familiarize yourself
with XPath. If you already know a few other programming languages, maybe you
can start by going through a couple of XPath tutorials, and then just "jump
in" and start prototyping the code, based on the example I mentioned and
your own JavaScript code.

And if you would prefer to delegate this work, this is also something that
we can help with under a Dev Support plan (https://www.orbeon.com/services).

-Alex

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