Subquery.php in Drupal 9
File
core/modules/views/src/Plugin/views/join/Subquery.php
View source
<?php
namespace Drupal\views\Plugin\views\join;
class Subquery extends JoinPluginBase {
public function __construct(array $configuration, $plugin_id, $plugin_definition) {
parent::__construct($configuration, $plugin_id, $plugin_definition);
$this->left_query = $this->configuration['left_query'];
}
public function buildJoin($select_query, $table, $view_query) {
if (empty($this->configuration['table formula'])) {
$right_table = "{" . $this->table . "}";
}
else {
$right_table = $this->configuration['table formula'];
}
$condition = "({$this->left_query}) = {$table['alias']}.{$this->field}";
$arguments = [];
if (isset($this->extra)) {
if (is_array($this->extra)) {
$extras = [];
foreach ($this->extra as $info) {
$join_table = '';
if (!array_key_exists('table', $info)) {
$join_table = $table['alias'] . '.';
}
elseif (isset($info['table'])) {
$join_table = $info['table'] . '.';
}
$placeholder = ':views_join_condition_' . $select_query
->nextPlaceholder();
if (is_array($info['value'])) {
$operator = !empty($info['operator']) ? $info['operator'] : 'IN';
if (count($info['value']) == 1) {
$info['value'] = array_shift($info['value']);
$operator = $operator == 'NOT IN' ? '!=' : '=';
}
}
else {
$operator = !empty($info['operator']) ? $info['operator'] : '=';
}
$extras[] = "{$join_table}{$info['field']} {$operator} {$placeholder}";
$arguments[$placeholder] = $info['value'];
}
if ($extras) {
if (count($extras) == 1) {
$condition .= ' AND ' . array_shift($extras);
}
else {
$condition .= ' AND (' . implode(' ' . $this->extraOperator . ' ', $extras) . ')';
}
}
}
elseif ($this->extra && is_string($this->extra)) {
$condition .= " AND ({$this->extra})";
}
}
$select_query
->addJoin($this->type, $right_table, $table['alias'], $condition, $arguments);
}
}
Classes
Name |
Description |
Subquery |
Join handler for relationships that join with a subquery as the left field. |