function EventsExampleForm::submitForm

File

events_example/src/Form/EventsExampleForm.php, line 110

Class

EventsExampleForm

Implements the SimpleForm form controller.

Namespace

Code

public function submitForm(array &$form, FormStateInterface $form_state) {
    $type = $form_state->getValue('incident_type');
    $report = $form_state->getValue('incident');
    // When dispatching, or triggering, an event start by constructing a new
    // event object. Then use the event dispatcher service to notify any event
    // subscribers. Event objects are used to transport relevant data to any
    // subscribers, as well as keep track of the current state of an event. It
    // is best practice to create a unique class wrapping
    // \Symfony\Component\EventDispatcher\Event.
    $event = new IncidentReportEvent($type, $report);
    // Dispatch an event by specifying which event, and providing an event
    // object. Rather than hard code the event name you should use a constant
    // to represent the event being dispatched. The constant serves as a
    // location for documentation of the event, and ensures your code is future
    // proofed against event name changes.
    $this->eventDispatcher
        ->dispatch(IncidentEvents::NEW_REPORT, $event);
}