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<?php
/**
* @file
* Definition of views_handler_relationship_entity_reverse.
*/
/**
* A relationship handlers which reverse entity references.
*
* @ingroup views_relationship_handlers
*/
class views_handler_relationship_entity_reverse extends views_handler_relationship {
function init(&$view, &$options) {
parent::init($view, $options);
$this->field_info = field_info_field($this->definition['field_name']);
}
/**
* Called to implement a relationship in a query.
*/
function query() {
$this->ensure_my_table();
// First, relate our base table to the current base table to the
// field, using the base table's id field to the field's column.
$views_data = views_fetch_data($this->table);
$left_field = $views_data['table']['base']['field'];
$first = array(
'left_table' => $this->table_alias,
'left_field' => $left_field,
'table' => $this->definition['field table'],
'field' => $this->definition['field field'],
);
if (!empty($this->options['required'])) {
$first['type'] = 'INNER';
}
if (!empty($this->definition['join_extra'])) {
$first['extra'] = $this->definition['join_extra'];
}
if (!empty($this->definition['join_handler']) && class_exists($this->definition['join_handler'])) {
$first_join = new $this->definition['join_handler'];
}
else {
$first_join = new views_join();
}
$first_join->definition = $first;
$first_join->construct();
$first_join->adjusted = TRUE;
$this->first_alias = $this->query->add_table($this->definition['field table'], $this->relationship, $first_join);
// Second, relate the field table to the entity specified using
// the entity id on the field table and the entity's id field.
$second = array(
'left_table' => $this->first_alias,
'left_field' => 'entity_id',
'table' => $this->definition['base'],
'field' => $this->definition['base field'],
);
if (!empty($this->options['required'])) {
$second['type'] = 'INNER';
}
if (!empty($this->definition['join_handler']) && class_exists($this->definition['join_handler'])) {
$second_join = new $this->definition['join_handler'];
}
else {
$second_join = new views_join();
}
$second_join->definition = $second;
$second_join->construct();
$second_join->adjusted = TRUE;
// use a short alias for this:
$alias = $this->definition['field_name'] . '_' . $this->table;
$this->alias = $this->query->add_relationship($alias, $second_join, $this->definition['base'], $this->relationship);
}
}
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