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   1  <?php
   2  
   3  /**
   4   * @package     Joomla.Site
   5   * @subpackage  com_content
   6   *
   7   * @copyright   (C) 2012 Open Source Matters, Inc. <https://www.joomla.org>
   8   * @license     GNU General Public License version 2 or later; see LICENSE.txt
   9   */
  10  
  11  namespace Joomla\Component\Content\Site\Helper;
  12  
  13  use Joomla\CMS\Factory;
  14  use Joomla\CMS\Language\Associations;
  15  use Joomla\CMS\Language\LanguageHelper;
  16  use Joomla\CMS\Language\Multilanguage;
  17  use Joomla\Component\Categories\Administrator\Helper\CategoryAssociationHelper;
  18  
  19  // phpcs:disable PSR1.Files.SideEffects
  20  \defined('_JEXEC') or die;
  21  // phpcs:enable PSR1.Files.SideEffects
  22  
  23  /**
  24   * Content Component Association Helper
  25   *
  26   * @since  3.0
  27   */
  28  abstract class AssociationHelper extends CategoryAssociationHelper
  29  {
  30      /**
  31       * Method to get the associations for a given item
  32       *
  33       * @param   integer  $id      Id of the item
  34       * @param   string   $view    Name of the view
  35       * @param   string   $layout  View layout
  36       *
  37       * @return  array   Array of associations for the item
  38       *
  39       * @since  3.0
  40       */
  41      public static function getAssociations($id = 0, $view = null, $layout = null)
  42      {
  43          $jinput    = Factory::getApplication()->input;
  44          $view      = $view ?? $jinput->get('view');
  45          $component = $jinput->getCmd('option');
  46          $id        = empty($id) ? $jinput->getInt('id') : $id;
  47  
  48          if ($layout === null && $jinput->get('view') == $view && $component == 'com_content') {
  49              $layout = $jinput->get('layout', '', 'string');
  50          }
  51  
  52          if ($view === 'article') {
  53              if ($id) {
  54                  $user      = Factory::getUser();
  55                  $groups    = implode(',', $user->getAuthorisedViewLevels());
  56                  $db        = Factory::getDbo();
  57                  $advClause = array();
  58  
  59                  // Filter by user groups
  60                  $advClause[] = 'c2.access IN (' . $groups . ')';
  61  
  62                  // Filter by current language
  63                  $advClause[] = 'c2.language != ' . $db->quote(Factory::getLanguage()->getTag());
  64  
  65                  if (!$user->authorise('core.edit.state', 'com_content') && !$user->authorise('core.edit', 'com_content')) {
  66                      // Filter by start and end dates.
  67                      $date = Factory::getDate();
  68  
  69                      $nowDate = $db->quote($date->toSql());
  70  
  71                      $advClause[] = '(c2.publish_up IS NULL OR c2.publish_up <= ' . $nowDate . ')';
  72                      $advClause[] = '(c2.publish_down IS NULL OR c2.publish_down >= ' . $nowDate . ')';
  73  
  74                      // Filter by published
  75                      $advClause[] = 'c2.state = 1';
  76                  }
  77  
  78                  $associations = Associations::getAssociations(
  79                      'com_content',
  80                      '#__content',
  81                      'com_content.item',
  82                      $id,
  83                      'id',
  84                      'alias',
  85                      'catid',
  86                      $advClause
  87                  );
  88  
  89                  $return = array();
  90  
  91                  foreach ($associations as $tag => $item) {
  92                      $return[$tag] = RouteHelper::getArticleRoute($item->id, (int) $item->catid, $item->language, $layout);
  93                  }
  94  
  95                  return $return;
  96              }
  97          }
  98  
  99          if ($view === 'category' || $view === 'categories') {
 100              return self::getCategoryAssociations($id, 'com_content', $layout);
 101          }
 102  
 103          return array();
 104      }
 105  
 106      /**
 107       * Method to display in frontend the associations for a given article
 108       *
 109       * @param   integer  $id  Id of the article
 110       *
 111       * @return  array  An array containing the association URL and the related language object
 112       *
 113       * @since  3.7.0
 114       */
 115      public static function displayAssociations($id)
 116      {
 117          $return = array();
 118  
 119          if ($associations = self::getAssociations($id, 'article')) {
 120              $levels    = Factory::getUser()->getAuthorisedViewLevels();
 121              $languages = LanguageHelper::getLanguages();
 122  
 123              foreach ($languages as $language) {
 124                  // Do not display language when no association
 125                  if (empty($associations[$language->lang_code])) {
 126                      continue;
 127                  }
 128  
 129                  // Do not display language without frontend UI
 130                  if (!array_key_exists($language->lang_code, LanguageHelper::getInstalledLanguages(0))) {
 131                      continue;
 132                  }
 133  
 134                  // Do not display language without specific home menu
 135                  if (!array_key_exists($language->lang_code, Multilanguage::getSiteHomePages())) {
 136                      continue;
 137                  }
 138  
 139                  // Do not display language without authorized access level
 140                  if (isset($language->access) && $language->access && !in_array($language->access, $levels)) {
 141                      continue;
 142                  }
 143  
 144                  $return[$language->lang_code] = array('item' => $associations[$language->lang_code], 'language' => $language);
 145              }
 146          }
 147  
 148          return $return;
 149      }
 150  }