Alter the query before it is executed.
\Drupal\views\ViewExecutable $view: The view object about to be processed.
QueryPluginBase $query: The query plugin object for the query.
hook_views_query_substitutions()
\Drupal\views\Plugin\views\query\Sql
Note: this list is generated by pattern matching, so it may include some functions that are not actually implementations of this hook.
function hook_views_query_alter(ViewExecutable &$view, QueryPluginBase &$query) {
// (Example assuming a view with an exposed filter on node title.)
// If the input for the title filter is a positive integer, filter against
// node ID instead of node title.
if ($view->name == 'my_view' && is_numeric($view->exposed_raw_input['title']) && $view->exposed_raw_input['title'] > 0) {
// Traverse through the 'where' part of the query.
foreach ($query->where as &$condition_group) {
foreach ($condition_group['conditions'] as &$condition) {
// If this is the part of the query filtering on title, chang the
// condition to filter on node ID.
if ($condition['field'] == 'node.title') {
$condition = array(
'field' => 'node.nid',
'value' => $view->exposed_raw_input['title'],
'operator' => '=',
);
}
}
}
}
}