1 views_handler_filter_term_node_tid_depth.inc | views_handler_filter_term_node_tid_depth::query() |
Add this filter to the query.
Due to the nature of fapi, the value and the operator have an unintended level of indirection. You will find them in $this->operator and $this->value respectively.
Overrides views_handler_filter_in_operator::query
File
- core/
modules/ taxonomy/ views/ views_handler_filter_term_node_tid_depth.inc, line 41 - Definition of views_handler_filter_term_node_tid_depth.
Class
- views_handler_filter_term_node_tid_depth
- Filter handler for taxonomy terms with depth.
Code
function query() {
// If no filter values are present, then do nothing.
if (count($this->value) == 0) {
return;
}
elseif (count($this->value) == 1) {
// Sometimes $this->value is an array with a single element, so convert
// it.
if (is_array($this->value)) {
$this->value = current($this->value);
}
$operator = '=';
}
else {
$operator = 'IN'; # " IN (" . implode(', ', array_fill(0, sizeof($this->value), '%d')) . ")";
}
// The normal use of ensure_my_table() here breaks Views.
// So instead we trick the filter into using the alias of the base table.
// See http://drupal.org/node/271833
// If a relationship is set, we must use the alias it provides.
if (!empty($this->relationship)) {
$this->table_alias = $this->relationship;
}
// If no relationship, then use the alias of the base table.
elseif (isset($this->query->table_queue[$this->query->base_table]['alias'])) {
$this->table_alias = $this->query->table_queue[$this->query->base_table]['alias'];
}
// This should never happen, but if it does, we fail quietly.
else {
return;
}
// Now build the subqueries.
$subquery = db_select('taxonomy_index', 'tn');
$subquery->addField('tn', 'nid');
$where = db_or()->condition('tn.tid', $this->value, $operator);
$last = "tn";
if ($this->options['depth'] > 0) {
$subquery->leftJoin('taxonomy_term_hierarchy', 'th', "th.tid = tn.tid");
$last = "th";
foreach (range(1, abs($this->options['depth'])) as $count) {
$subquery->leftJoin('taxonomy_term_hierarchy', "th$count", "$last.parent = th$count.tid");
$where->condition("th$count.tid", $this->value, $operator);
$last = "th$count";
}
}
elseif ($this->options['depth'] < 0) {
foreach (range(1, abs($this->options['depth'])) as $count) {
$subquery->leftJoin('taxonomy_term_hierarchy', "th$count", "$last.tid = th$count.parent");
$where->condition("th$count.tid", $this->value, $operator);
$last = "th$count";
}
}
$subquery->condition($where);
$this->query->add_where($this->options['group'], "$this->table_alias.$this->real_field", $subquery, 'IN');
}