ConditionAccessResolverTrait.php

<?php

namespace Drupal\Core\Condition;

use Drupal\Component\Plugin\Exception\ContextException;

/**
 * Resolves a set of conditions.
 */
trait ConditionAccessResolverTrait {
    
    /**
     * Resolves the given conditions based on the condition logic ('and'/'or').
     *
     * @param \Drupal\Core\Condition\ConditionInterface[] $conditions
     *   A set of conditions.
     * @param string $condition_logic
     *   The logic used to compute access, either 'and' or 'or'.
     *
     * @return bool
     *   Whether these conditions grant or deny access.
     */
    protected function resolveConditions($conditions, $condition_logic) {
        foreach ($conditions as $condition) {
            try {
                $pass = $condition->execute();
            } catch (ContextException $e) {
                // If a condition is missing context and is not negated, consider that a
                // fail.
                $pass = $condition->isNegated();
            }
            // If a condition fails and all conditions were needed, deny access.
            if (!$pass && $condition_logic == 'and') {
                return FALSE;
            }
            elseif ($pass && $condition_logic == 'or') {
                return TRUE;
            }
        }
        // Return TRUE if logic was 'and', meaning all rules passed.
        // Return FALSE if logic was 'or', meaning no rule passed.
        return $condition_logic == 'and';
    }

}