single_datetime.module

<?php

/**
 * @file
 * Main module file single_datetime.
 */

use Drupal\Core\Routing\RouteMatchInterface;

/**
 * Implements hook_help().
 */
function single_datetime_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {
    case 'help.page.single_datetime':
      $output = '';
      $output .= '<h3>' . t('About') . '</h3>';
      $output .= '<p>' . t('Date time picker form element for date and date range fields using the xdan jQuery Plugin Date and Time Picker library');
      $output .= '<h3>' . t('Install jQuery Plugin Date and Time Picker library') . '</h3>';
      $output .= '<p>' . t('It is possible to place library manual or with composer.') . '</p>';
      $output .= '<p>' . t('See <a href=":readme">Readme.txt</a> inside this module or go to project page for detailed instructions',
          [':readme' => 'https://cgit.drupalcode.org/single_datetime/tree/README.txt']) . '</p>';
      $output .= '<h3>' . t('External resources') . '</h3>';
      $output .= '<p><a href="https://xdsoft.net/jqplugins/datetimepicker/">DateTimePicker</a></p>';
      $output .= '<p><a href="https://github.com/xdan/datetimepicker">Github</a></p>';
      return $output;
  }
}