LibraryAlterTransactionForm.php in Library 8

Namespace

Drupal\library\Form

File

src/Form/LibraryAlterTransactionForm.php

<?php

namespace Drupal\library\Form;

use Drupal\Core\Form\FormBase;
use Drupal\Core\Form\FormStateInterface;
use Drupal\library\Entity\LibraryItem;
use Drupal\library\Entity\LibraryTransaction;
use Drupal\library\Event\ActionEvent;
use Drupal\node\Entity\Node;

/**
 * Alter the library transaction form.
 */
class LibraryAlterTransactionForm extends FormBase {

  /**
   * Returns a unique string identifying the form.
   *
   * @return string
   *   The unique string identifying the form.
   */
  public function getFormId() {
    return 'library_alter_transaction_form';
  }

  /**
   * Form constructor.
   *
   * @param array $form
   *   An associative array containing the structure of the form.
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   The current state of the form.
   * @param null|int $transaction
   *   The transaction.
   *
   * @return array
   *   The form structure.
   */
  public function buildForm(array $form, FormStateInterface $form_state, $transaction = NULL) : array {
    if ($transaction == NULL) {
      $form_state
        ->setErrorByName('transaction', $this
        ->t('Required parameters missing'));
      return $form;
    }
    $form['transaction'] = [
      '#type' => 'value',
      '#value' => $transaction,
    ];
    $transactionEntity = LibraryTransaction::load($transaction);
    if (!$transactionEntity) {
      $form_state
        ->setErrorByName('transaction', $this
        ->t('Required data missing'));
      return $form;
    }
    $itemEntity = LibraryItem::load($transactionEntity
      ->get('library_item')->value);
    if ($itemEntity
      ->get('nid')
      ->getValue()) {
      $node = Node::load($itemEntity
        ->get('nid')
        ->getValue()[0]['target_id']);
      if ($itemEntity
        ->get('barcode')->value) {
        $format_title = $node
          ->getTitle() . ' (' . $itemEntity
          ->get('barcode')->value . ')';
      }
      else {
        $format_title = $node
          ->getTitle();
      }
      $form['item_display'] = [
        '#type' => 'textfield',
        '#title' => $this
          ->t('Item'),
        '#value' => $format_title,
        '#disabled' => TRUE,
      ];
      $form['nid'] = [
        '#type' => 'value',
        '#value' => $node
          ->id(),
      ];
    }
    else {
      $form_state
        ->setErrorByName('item_display', $this
        ->t('Required parameters missing'));
      return $form;
    }
    $form['notes'] = [
      '#type' => 'textarea',
      '#title' => $this
        ->t('Message'),
      '#required' => FALSE,
      '#maxlength' => 250,
      '#default_value' => $transactionEntity
        ->get('notes')->value,
      '#description' => $this
        ->t('If you are reserving an item, make sure to include the date and time you would like it to be ready.'),
    ];
    $form['submit'] = [
      '#type' => 'submit',
      '#value' => $this
        ->t('Update'),
    ];
    return $form;
  }

  /**
   * {@inheritdoc}
   */
  public function validateForm(array &$form, FormStateInterface $form_state) {
    parent::validateForm($form, $form_state);

    // @todo Verify that the state change is allowed, don't trust the
    // parameters.
  }

  /**
   * Form submission handler.
   *
   * @param array $form
   *   An associative array containing the structure of the form.
   * @param \Drupal\Core\Form\FormStateInterface $form_state
   *   The current state of the form.
   */
  public function submitForm(array &$form, FormStateInterface $form_state) {
    $transaction = LibraryTransaction::load($form_state
      ->getValue('transaction'));
    $transaction
      ->set('notes', $form_state
      ->getValue('notes'));
    $transaction
      ->save();

    // @todo Inject.
    \Drupal::service('cache_tags.invalidator')
      ->invalidateTags([
      'node:' . $form_state
        ->getValue('nid'),
    ]);
    $this
      ->messenger()
      ->addStatus($this
      ->t('Transaction updated.'));
    \Drupal::service('event_dispatcher')
      ->dispatch('library.action', new ActionEvent($transaction));
    $form_state
      ->setRedirect('entity.node.canonical', [
      'node' => $form_state
        ->getValue('nid'),
    ]);
  }

}

Classes

Name	Description
LibraryAlterTransactionForm	Alter the library transaction form.