ProcessWire - Formulare mit der API erstellen (Tutorial)

Stichworte

TODO - Artikel fertigstellen...

CSRF

Allgemeines Vorgehen

Drei Schritte

Formulare benötigen i.d.R. 3 Arbeitsschritte. Die Darstellung des Formulars, das Validieren der Formulareingaben und die Verarbeitung der Daten.

• Formularausgabe
• Validierung der Formulardaten
  • Bei Fehlern in der Eingabe Formular nochmal mit Fehlermeldung und den ausgefüllten Daten anzeigen
• Formulardaten verarbeiten

Für alle Aufgaben stellt uns ProcessWire Funktionen zur Verfügung Reading now continues through the code comments: <syntaxhighlight lang="php">

// if sumbitted process form if($input->post->submit){

   // process form input
   $form->processInput($input->post);

public function render(): void {

// The function render() creates immediatly a form.
// It will be empty or filled with given values.
// The function createForm() is explained later.

$form = $this->createForm();

// We check if we have a submitted form.
// The Send button is an excellent choice to check,
// but it could have been another field or a Cancel button.

if(input()->post("pf_submit_btn")) {

 // we must first validate
 // The processInput function can be intercepted for later validation.
 // if an error is found, $form->getErrors() will tell us.

  $form->processInput(input()->post);

 // Do we have any errors?

 if(count($form->getErrors()) > 0) {

  // We found errors, we display
  // the form again to correct the situation.
  // The form is filled with error messages above the appropriate fields.

  $this->view->set("form", $form->render());

 } else {

  // No preliminary errors found. We can treat.

  $this->values["company"] = sanitizer()->input()->post("company");
  [...]

  // Are we satisfied with the values?
  // If this is not the case, send the form back to the user!
  // This is the rest of the processing code.
  [...]
 }

} else {

 // We don’t have any data yet, we have to ask for it.
 // The form is empty by default (except for the date in this example).
 // Here we use the Twig rendering engine.

 $this->view->set("form", $form->render());
}

}