public function views_handler_relationship_entity_reverse::query in Views (for Drupal 7) 7.3

Called to implement a relationship in a query.

Overrides views_handler_relationship::query

File

modules/field/views_handler_relationship_entity_reverse.inc, line 27

Definition of views_handler_relationship_entity_reverse.

Class

views_handler_relationship_entity_reverse

A relationship handlers which reverse entity references.

Code

public 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);
}