AppointmentCalendarDeleteForm.php in Appointment Calendar 8

Namespace

Drupal\appointment_calendar\Form

File

src/Form/AppointmentCalendarDeleteForm.php

<?php

namespace Drupal\appointment_calendar\Form;

use Drupal\Core\Form\FormBase;
use Drupal\Core\Form\FormStateInterface;
use Drupal\Core\Database\Connection;
class AppointmentCalendarDeleteForm extends FormBase {
  protected $connection;

  /**
   * {@inheritdoc}
   */
  public function getFormId() {
    return 'appointment_calendar_delete_form';
  }
  public function __construct(Connection $connection) {
    $this->connection = $connection;
  }

  /**
   * {@inheritdoc}
   */
  public function buildForm(array $form, FormStateInterface $form_state) {
    $db_conn = \Drupal::database();
    $from_date = \Drupal::request()->query
      ->get('date');

    // Checking for Booked slots.
    // If slots booked in particular date disable option for delete.
    if ($from_date != '') {
      $date = date('Y-m-d', $from_date);
      $delete_query = $db_conn
        ->select('node__field_appointment_date', 'ad');
      $delete_query
        ->fields('ad', [
        'field_appointment_date_value',
      ]);
      $delete_query
        ->condition('field_appointment_date_value', '%' . $this->connection
        ->escapeLike($date) . '%', 'LIKE');
      $delete_result = $delete_query
        ->execute()
        ->fetchAll();
      if (count($delete_result) >= 1) {
        $form['date'] = [
          '#markup' => $this
            ->t('Unable to delete ' . $date . '. Appointment already booked in selected date<br>If you still want to delete the selected date, delete timeslots booked and retry<br> '),
        ];
        $form['return'] = [
          '#type' => 'submit',
          '#value' => t('Return'),
        ];
      }
      else {
        $form['date_markup'] = [
          '#markup' => $this
            ->t('Are you sure to delete <b>:date</b>?<br>Note:All filled timeslots also will be deleted.<br>', array(
            ':date' => $date,
          )),
        ];
        $form['date'] = [
          '#type' => 'hidden',
          '#value' => $from_date,
        ];
        $form['delete'] = [
          '#type' => 'submit',
          '#value' => $this
            ->t('Yes'),
        ];
        $form['no'] = [
          '#type' => 'submit',
          '#value' => $this
            ->t('No'),
        ];
      }
      return $form;
    }
  }

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

  /**
   * {@inheritdoc}
   */
  public function submitForm(array &$form, FormStateInterface $form_state) {
    $values = $form_state
      ->getValues();
    $db_conn = \Drupal::database();
    $op = (string) $values['op'];

    // Delete Slot.
    if ($op == $this
      ->t('Yes')) {
      $db_conn
        ->delete('appointment_date')
        ->condition('date', $values['date'])
        ->execute();
      $this
        ->messenger()
        ->addStatus(t('Selected Date deleted successfully'));
      $form_state
        ->setRedirect('appointment_calendar.list_page');
    }

    // Go-to Listing Page.
    if ($op == $this
      ->t('No') || $op == $this
      ->t('Return')) {
      $form_state
        ->setRedirect('appointment_calendar.list_page');
    }
  }

}

Classes

Name	Description
AppointmentCalendarDeleteForm