single_datetime_exposed.module in Single DateTimePicker 8

Main module file single_datetime_exposed.

File

modules/single_datetime_exposed/single_datetime_exposed.module

<?php

/**
 * @file
 * Main module file single_datetime_exposed.
 */
use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\Core\Form\FormStateInterface;
use Drupal\single_datetime\AttributeHelper;

/**
 * Implements hook_help().
 */
function single_datetime_exposed_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {
    case 'help.page.single_datetime_exposed':
      $output = '';
      $output .= '<h3>' . t('About') . '</h3>';
      $output .= '<p>' . t('Date time picker attached to all Views exposed date fields automatically.');
      return $output;
  }
}

/**
 * Implements hook_form_BASE_FORM_ID_alter().
 */
function single_datetime_exposed_form_views_exposed_form_alter(&$form, FormStateInterface $form_state, $form_id) {

  /** @var \Drupal\views\ViewExecutable $view */
  $view = $form_state
    ->getStorage()['view'];
  if ($view->preview === NULL) {
    $filters = $view
      ->getHandlers('filter');

    // Use default template from helper.
    $attributes = AttributeHelper::defaultWidget();
    $active = FALSE;
    foreach ($filters as $id => $filter) {

      // Only take filters which are exposed and date based.
      // Only handle date based value, no offset exposed dates.
      if (!empty($filter['exposed']) && $filter['value']['type'] === 'date' && ($filter['plugin_id'] === 'date' || $filter['plugin_id'] === 'search_api_date')) {
        $active = TRUE;
        $field_name = $filter['id'];

        // Based on selected filters attach attributes on proper place.
        switch ($filter['operator']) {
          case 'between':
          case 'not between':
            $form[$field_name]['min']['#attributes'] = $attributes;
            $form[$field_name]['max']['#attributes'] = $attributes;

            // Adjust titles.
            $field_title = $form[$field_name]['min']['#title'];
            $form[$field_name]['min']['#title'] = $field_title . ' ( ' . t('From') . ' )';
            $form[$field_name]['max']['#title'] = $field_title . ' ( ' . t('To') . ' )';

            // On between filters when end value is empty, sometimes filters
            // are not working. So set end value.
            $input = $form_state
              ->getUserInput();
            if (!empty($input[$field_name]['min']) && empty($input[$field_name]['max'])) {
              $timestamp = strtotime($input[$field_name]['min']) + 86400;
              $input[$field_name]['max'] = date('Y-m-d h:i:s', $timestamp);
              $form_state
                ->setUserInput($input);
            }
            break;
          default:
            $form[$field_name]['#attributes'] = $attributes;
        }
      }
    }

    // If we have found filters. Attach library.
    if ($active) {
      $form['#attached']['library'][] = 'single_datetime/datetimepicker';
    }
  }
}

Functions

Name	Description
single_datetime_exposed_form_views_exposed_form_alter	Implements hook_form_BASE_FORM_ID_alter().
single_datetime_exposed_help	Implements hook_help().