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<?php
/**
* Matomo - free/libre analytics platform
*
* @link https://matomo.org
* @license https://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*/
namespace Piwik\Plugins\Contents\Columns\Metrics;
use Piwik\Columns\Dimension;
use Piwik\DataTable\Row;
use Piwik\Metrics\Formatter;
use Piwik\Piwik;
use Piwik\Plugin\ProcessedMetric;
/**
* The content interaction rate. Calculated as:
*
* nb_interactions / nb_impressions
*
* nb_interactions & nb_impressions are calculated by the Contents archiver.
*/
class InteractionRate extends ProcessedMetric
{
public function getName()
{
return 'interaction_rate';
}
public function getTranslatedName()
{
return Piwik::translate('Contents_InteractionRate');
}
public function getDocumentation()
{
return Piwik::translate('Contents_InteractionRateMetricDocumentation');
}
public function compute(Row $row)
{
$interactions = $this->getMetric($row, 'nb_interactions');
$impressions = $this->getMetric($row, 'nb_impressions');
return Piwik::getQuotientSafe($interactions, $impressions, $precision = 4);
}
public function format($value, Formatter $formatter)
{
return $formatter->getPrettyPercentFromQuotient($value);
}
public function getDependentMetrics()
{
return array('nb_interactions', 'nb_impressions');
}
public function getSemanticType(): ?string
{
return Dimension::TYPE_PERCENT;
}
}
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