public function modify_score($score, $vote, $old_vote, $metric, $context_id)
{
$vote_diff = $vote - $old_vote;
if ($vote !== $old_vote) {
if ($vote === null) {
$score['count']--;
} elseif ($old_vote === null) {
$score['count']++;
}
}
$score['average'] += $vote_diff;
$score['value'] = $score['average'];
return parent::modify_score($score, $vote, $old_vote, $metric, $context_id);
}
public function modify_score($score, $vote, $old_vote, $metric, $context_id)
{
$vote_diff = $vote - $old_vote;
if (!isset($score['data']['positive'])) {
$score['data']['positive_votes'] = 0;
}
if ($vote !== $old_vote) {
if ($vote === null) {
$score['count']--;
if ($old_vote > 0) {
$score['data']['positive_votes']--;
}
} elseif ($old_vote === null) {
$score['count']++;
if ($vote > 0) {
$score['data']['positive_votes']++;
}
}
}
$score['average'] += $vote_diff;
$score['value'] = self::calculate_wilson_score($score['data']['positive_votes'], $score['count']);
return parent::modify_score($score, $vote, $old_vote, $metric, $context_id);
}
public function get_vote($metric, $context_id, $user_id)
{
$vote = array();
$null = true;
foreach ($metric['options']['fields'] as $index => $field) {
$field_context = $context_id . self::FIELD_KEY . $index;
$vote[$index] = parent::get_vote($metric, $field_context, $user_id);
if ($vote[$index] !== null) {
$null = false;
}
}
if ($null) {
return null;
} else {
return self::calculate_total($vote, $metric['options']);
}
}
public function modify_score($score, $vote, $old_vote, $metric, $context_id)
{
$vote_diff = $vote - $old_vote;
$score['average'] = $score['average'] * $score['count'];
if ($vote !== $old_vote) {
if ($vote === null) {
$score['count']--;
} elseif ($old_vote === null) {
$score['count']++;
}
}
if ($score['count'] == 0) {
$score['average'] = 0;
$score['value'] = 0;
} else {
$score['average'] = ($score['average'] + $vote_diff) / $score['count'];
$score['value'] = self::calculate_bayesian_score($score['average'], $score['count'], $metric['options']['max']);
}
return parent::modify_score($score, $vote, $old_vote, $metric, $context_id);
}
public function modify_score($score, $vote, $old_vote, $metric, $context_id)
{
if ($vote !== $old_vote) {
if ($vote === null) {
$score['count']--;
} elseif ($old_vote === null) {
$score['count']++;
}
}
// Initialize the data array
if (empty($score['data']['votes'])) {
$answers_count = count(preg_split("/\r\n|\n|\r/", $metric['options']['answers']));
for ($i = 0; $i < $answers_count; $i++) {
$score['data']['votes'][$i] = 0;
}
}
// Tally votes
if ($old_vote !== null) {
$score['data']['votes'][$old_vote]--;
}
if ($vote !== null) {
$score['data']['votes'][$vote]++;
}
// Get the index for the highest value in our scores array.
$score['average'] = array_keys($score['data']['votes'], max($score['data']['votes']))[0];
$score['value'] = $score['average'];
return parent::modify_score($score, $vote, $old_vote, $metric, $context_id);
}
