metatag-8.x-1.x-dev/metatag_custom_tags/metatag_custom_tags.module

<?php

/**
 * @file
 * Contains metatag_custom_tags.module.
 */

use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\Core\StringTranslation\TranslatableMarkup;
use Drupal\Core\Url;

/**
 * Implements hook_help().
 */
function metatag_custom_tags_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {
    // Main module help for the Metatag: Custom Tags module.
    case 'help.page.metatag_custom_tags':
      $output = '<h2>' . (string) new TranslatableMarkup('About') . '</h2>';
      $output .= '<p>' . (string) new TranslatableMarkup('This module provides support to define and manage custom meta tags.');
      $output .= '<h3>' . (string) new TranslatableMarkup('Intended workflow') . '</h3>';
      $output .= '<p>' . (string) new TranslatableMarkup('The module provides the option to create different <a href=":metatag_custom_tag">"Custom Tags"</a> to use for different purposes.', [':metatag_custom_tag' => Url::fromRoute('entity.metatag_custom_tag.collection')->toString()]) . '</p>';
      $output .= '<p>' . (string) new TranslatableMarkup('The best way of using Metatag: Custom Tags is as follows:') . '</p>';
      $output .= '<ol>';
      $output .= '<li>' . (string) new TranslatableMarkup('Create the <a href=":metatag_custom_tag_create">"Custom Tag"</a>, fill in the specific values that every page should have.', [':metatag_custom_tag_create' => Url::fromRoute('entity.metatag_custom_tag.admin_add')->toString()]) . '</li>';
      $output .= '<li>' . (string) new TranslatableMarkup('Customize the <a href=":defaults">global defaults</a>, fill in the specific values and tokens that every page should have.', [':defaults' => Url::fromRoute('entity.metatag_defaults.edit_form', ['metatag_defaults' => 'global'])->toString()]) . '</li>';
      $output .= '</ol>';
      return $output;

    // The main configuration page.
    case 'entity.metatag_custom_tag.collection':
      $output = '<p>' . (string) new TranslatableMarkup('Configure Custom tags below.') . '</p>';
      return $output;
  }
}