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<?php
namespace Drupal\datetime\Hook;
use Drupal\Core\StringTranslation\StringTranslationTrait;
use Drupal\Core\Url;
use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\Core\Hook\Attribute\Hook;
/**
* Hook implementations for datetime.
*/
class DatetimeHooks {
use StringTranslationTrait;
/**
* Implements hook_help().
*/
#[Hook('help')]
public function help($route_name, RouteMatchInterface $route_match): ?string {
switch ($route_name) {
case 'help.page.datetime':
$output = '';
$output .= '<h2>' . $this->t('About') . '</h2>';
$output .= '<p>' . $this->t('The Datetime module provides a Date field that stores dates and times. It also provides the Form API elements <em>datetime</em> and <em>datelist</em> for use in programming modules. See the <a href=":field">Field module help</a> and the <a href=":field_ui">Field UI module help</a> pages for general information on fields and how to create and manage them. For more information, see the <a href=":datetime_do">online documentation for the Datetime module</a>.', [
':field' => Url::fromRoute('help.page', [
'name' => 'field',
])->toString(),
':field_ui' => \Drupal::moduleHandler()->moduleExists('field_ui') ? Url::fromRoute('help.page', [
'name' => 'field_ui',
])->toString() : '#',
':datetime_do' => 'https://www.drupal.org/documentation/modules/datetime',
]) . '</p>';
$output .= '<h2>' . $this->t('Uses') . '</h2>';
$output .= '<dl>';
$output .= '<dt>' . $this->t('Managing and displaying date fields') . '</dt>';
$output .= '<dd>' . $this->t('The <em>settings</em> and the <em>display</em> of the Date field can be configured separately. See the <a href=":field_ui">Field UI help</a> for more information on how to manage fields and their display.', [
':field_ui' => \Drupal::moduleHandler()->moduleExists('field_ui') ? Url::fromRoute('help.page', [
'name' => 'field_ui',
])->toString() : '#',
]) . '</dd>';
$output .= '<dt>' . $this->t('Displaying dates') . '</dt>';
$output .= '<dd>' . $this->t('Dates can be displayed using the <em>Plain</em> or the <em>Default</em> formatter. The <em>Plain</em> formatter displays the date in the <a href="http://en.wikipedia.org/wiki/ISO_8601">ISO 8601</a> format. If you choose the <em>Default</em> formatter, you can choose a format from a predefined list that can be managed on the <a href=":date_format_list">Date and time formats</a> page.', [
':date_format_list' => Url::fromRoute('entity.date_format.collection')->toString(),
]) . '</dd>';
$output .= '</dl>';
return $output;
}
return NULL;
}
}
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