function Sql::buildCondition

Construct the "WHERE" or "HAVING" part of the query.

As views has to wrap the conditions from arguments with AND, a special group is wrapped around all conditions. This special group has the ID 0. There is other code in filters which makes sure that the group IDs are higher than zero.

Parameters

$where: 'where' or 'having'.

File

core/modules/views/src/Plugin/views/query/Sql.php, line 1134

Class

Sql

Views query plugin for an SQL query.

Namespace

Code

protected function buildCondition($where = 'where') {
    $has_condition = FALSE;
    $has_arguments = FALSE;
    $has_filter = FALSE;
    
    /** @var \Drupal\Core\Database\Connection $connection */
    $connection = $this->getConnection();
    $main_group = $connection->condition('AND');
    $filter_group = $this->groupOperator == 'OR' ? $connection->condition('OR') : $connection->condition('AND');
    foreach ($this->{$where} as $group => $info) {
        if (!empty($info['conditions'])) {
            $sub_group = $info['type'] == 'OR' ? $connection->condition('OR') : $connection->condition('AND');
            foreach ($info['conditions'] as $clause) {
                if ($clause['operator'] == 'formula') {
                    $has_condition = TRUE;
                    $sub_group->where($clause['field'], $clause['value']);
                }
                else {
                    $has_condition = TRUE;
                    $sub_group->condition($clause['field'], $clause['value'], $clause['operator']);
                }
            }
            // Add the item to the filter group.
            if ($group != 0) {
                $has_filter = TRUE;
                $filter_group->condition($sub_group);
            }
            else {
                $has_arguments = TRUE;
                $main_group->condition($sub_group);
            }
        }
    }
    if ($has_filter) {
        $main_group->condition($filter_group);
    }
    if (!$has_arguments && $has_condition) {
        return $filter_group;
    }
    if ($has_arguments && $has_condition) {
        return $main_group;
    }
}