Create a new Votes Constraints

NOTE

Read at votes constraints chapter

Alternative possible implementation of NoTie

<?php

namespace YOUR_NAMESPACE;

use CondorcetPHP\Condorcet\{Election, Vote, VoteConstraintInterface};

class NoTieAlternative implements VoteConstraintInterface
{
    public static function isVoteAllowed(Election $election, Vote $vote): bool
    {
        $voteRanking = $vote->getContextualRankingWithoutSort($election);

        foreach ($voteRanking as $oneRank) {
            if (\count($oneRank) > 1) {
                return false;
            }
        }

        return true;
    }
}

Then ⇒

<?php

use CondorcetPHP\Condorcet\Constraints\NoTie;
use CondorcetPHP\Condorcet\VoteConstraintInterface;

class NoTieAlternative extends NoTie implements VoteConstraintInterface {}

$election->addConstraint(NoTieAlternative::class);