ContactStorageDownloadForm.php in Contact Storage Export 8

Namespace

Drupal\contact_storage_export\Form

File

src/Form/ContactStorageDownloadForm.php

<?php

namespace Drupal\contact_storage_export\Form;

use Drupal\Core\Form\FormBase;
use Drupal\Core\Form\FormStateInterface;
use Symfony\Component\HttpFoundation\BinaryFileResponse;
use Drupal\Core\Url;
use Drupal\file\Entity\File;

/**
 * Class ContactStorageDownloadForm.
 *
 * @package Drupal\contact_storage_export\Form
 */
class ContactStorageDownloadForm extends FormBase {

  /**
   * {@inheritdoc}
   */
  public function getFormId() {
    return 'contact_storage_download_form';
  }

  /**
   * {@inheritdoc}
   */
  public function buildForm(array $form, FormStateInterface $form_state, $contact_form = '', $key = 0) {
    $form['contact_form'] = [
      '#type' => 'hidden',
      '#value' => $contact_form,
    ];
    $form['key'] = [
      '#type' => 'hidden',
      '#value' => $key,
    ];
    if ($contact_form) {
      $form['intro'] = [
        '#type' => 'item',
        '#plain_text' => $this
          ->t('Your export is ready for download.'),
      ];
      $form['download_container'] = [
        '#type' => 'container',
      ];
      $form['download_container']['download'] = [
        '#type' => 'submit',
        '#value' => $this
          ->t('Download'),
        '#attributes' => [
          'class' => [
            'button',
            'button--primary',
          ],
        ],
      ];
      $form['return'] = [
        '#title' => $this
          ->t('Return to the export page.'),
        '#type' => 'link',
        '#url' => Url::fromRoute('entity.contact_form.export_form'),
      ];
    }
    else {
      $message = $this
        ->t('An unknown error occurred preparing your download.');
      $messenger = \Drupal::messenger();
      $messenger
        ->addWarning($message, FALSE);
    }
    return $form;
  }

  /**
   * {@inheritdoc}
   */
  public function submitForm(array &$form, FormStateInterface $form_state) {
    $values = $form_state
      ->getValues();

    // Get data from tempstore.
    $tempstore = \Drupal::service('tempstore.private')
      ->get('contact_storage_export');
    $data = $tempstore
      ->get('data');
    if (isset($data[$values['key']])) {
      $export = $data[$values['key']];

      // Load the file.
      if ($file = File::load($export['fid'])) {

        // Send the export file.
        $response = new BinaryFileResponse($file
          ->getFileUri());
        $response
          ->setContentDisposition('attachment', $export['filename']);
        $form_state
          ->setResponse($response);
      }
      else {
        $message = $this
          ->t('Failed to load the file.');
        $messenger = \Drupal::messenger();
        $messenger
          ->addWarning($message);
      }
    }
    else {
      $message = $this
        ->t('Failed to download the file.');
      $messenger = \Drupal::messenger();
      $messenger
        ->addWarning($message);
    }
  }

}

Classes

Name	Description
ContactStorageDownloadForm	Class ContactStorageDownloadForm.