function HandlerBase::setRelationship

Sets up any needed relationship.

This is called just prior to query().

Overrides ViewsHandlerInterface::setRelationship

File

core/modules/views/src/Plugin/views/HandlerBase.php, line 595

Class

HandlerBase

Base class for Views handler plugins.

Namespace

Code

public function setRelationship() {
  // Ensure this gets set to something.
  $this->relationship = NULL;
  // Don't process non-existent relationships.
  if (empty($this->options['relationship']) || $this->options['relationship'] == 'none') {
    return;
  }
  $relationship = $this->options['relationship'];
  // Ignore missing/broken relationships.
  if (empty($this->view->relationship[$relationship])) {
    return;
  }
  // Check to see if the relationship has already processed. If not, then we
  // cannot process it.
  if (empty($this->view->relationship[$relationship]->alias)) {
    return;
  }
  // Finally!
  $this->relationship = $this->view->relationship[$relationship]->alias;
}