wcfsetup/install/files/lib/page/AbstractArticlePage.class.php

   1 <?php
   2 namespace wcf\page;
   3 use wcf\data\article\category\ArticleCategory;
   4 use wcf\data\article\content\ViewableArticleContent;
   5 use wcf\data\article\AccessibleArticleList;
   6 use wcf\data\article\ArticleEditor;
   7 use wcf\data\article\ViewableArticle;
   8 use wcf\data\tag\Tag;
   9 use wcf\system\database\util\PreparedStatementConditionBuilder;
  10 use wcf\system\exception\IllegalLinkException;
  11 use wcf\system\exception\PermissionDeniedException;
  12 use wcf\system\language\LanguageFactory;
  13 use wcf\system\page\PageLocationManager;
  14 use wcf\system\tagging\TagEngine;
  15 use wcf\system\WCF;
  16
  17 /**
  18  * Abstract implementation of the article page.
  19  *
  20  * @author      Marcel Werk
  21  * @copyright   2001-2017 WoltLab GmbH
  22  * @license     GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
  23  * @package     WoltLabSuite\Core\Page
  24  * @since       3.0
  25  */
  26 abstract class AbstractArticlePage extends AbstractPage {
  27         /**
  28          * @inheritDoc
  29          */
  30         public $neededModules = ['MODULE_ARTICLE'];
  31
  32         /**
  33          * article content id
  34          * @var integer
  35          */
  36         public $articleContentID = 0;
  37
  38         /**
  39          * article content object
  40          * @var ViewableArticleContent
  41          */
  42         public $articleContent;
  43
  44         /**
  45          * article object
  46          * @var ViewableArticle
  47          */
  48         public $article;
  49
  50         /**
  51          * list of tags
  52          * @var Tag[]
  53          */
  54         public $tags = [];
  55
  56         /**
  57          * category object
  58          * @var ArticleCategory
  59          */
  60         public $category;
  61
  62         /**
  63          * list of related articles
  64          * @var AccessibleArticleList
  65          */
  66         public $relatedArticles;
  67
  68         /**
  69          * @inheritDoc
  70          */
  71         public function readParameters() {
  72                 parent::readParameters();
  73
  74                 if (isset($_REQUEST['id'])) $this->articleContentID = intval($_REQUEST['id']);
  75                 $this->articleContent = ViewableArticleContent::getArticleContent($this->articleContentID);
  76                 if ($this->articleContent === null) {
  77                         throw new IllegalLinkException();
  78                 }
  79
  80                 // check if the language has been disabled
  81                 if ($this->articleContent->languageID && LanguageFactory::getInstance()->getLanguage($this->articleContent->languageID) === null) {
  82                         throw new IllegalLinkException();
  83                 }
  84
  85                 $this->article = ViewableArticle::getArticle($this->articleContent->articleID, false);
  86                 $this->category = $this->article->getCategory();
  87
  88                 // update interface language
  89                 if (!WCF::getUser()->userID && $this->article->isMultilingual && $this->articleContent->languageID != WCF::getLanguage()->languageID) {
  90                         WCF::setLanguage($this->articleContent->languageID);
  91                 }
  92         }
  93
  94         /**
  95          * @inheritDoc
  96          */
  97         public function checkPermissions() {
  98                 parent::checkPermissions();
  99
 100                 if (!$this->article->canRead()) {
 101                         throw new PermissionDeniedException();
 102                 }
 103         }
 104
 105         /**
 106          * @inheritDoc
 107          */
 108         public function readData() {
 109                 parent::readData();
 110
 111                 // update view count
 112                 $articleEditor = new ArticleEditor($this->article->getDecoratedObject());
 113                 $articleEditor->updateCounters([
 114                         'views' => 1
 115                 ]);
 116
 117                 // get tags
 118                 if (MODULE_TAGGING && WCF::getSession()->getPermission('user.tag.canViewTag')) {
 119                         $this->tags = TagEngine::getInstance()->getObjectTags(
 120                                 'com.woltlab.wcf.article',
 121                                 $this->articleContent->articleContentID,
 122                                 [$this->articleContent->languageID ?: LanguageFactory::getInstance()->getDefaultLanguageID()]
 123                         );
 124                 }
 125
 126                 // get related articles
 127                 if (MODULE_TAGGING && ARTICLE_RELATED_ARTICLES) {
 128                         if (!empty($this->tags)) {
 129                                 $conditionBuilder = new PreparedStatementConditionBuilder();
 130                                 $conditionBuilder->add('objectTypeID = ?', [TagEngine::getInstance()->getObjectTypeID('com.woltlab.wcf.article')]);
 131                                 $conditionBuilder->add('tagID IN (?)', [array_keys($this->tags)]);
 132                                 $conditionBuilder->add('objectID <> ?', [$this->articleContentID]);
 133                                 $sql = "SELECT          objectID, COUNT(*) AS count
 134                                         FROM            wcf" . WCF_N . "_tag_to_object
 135                                         " . $conditionBuilder . "
 136                                         GROUP BY        objectID
 137                                         HAVING          COUNT(*) >= " . round(count($this->tags) * ARTICLE_RELATED_ARTICLES_MATCH_THRESHOLD / 100) . "
 138                                         ORDER BY        count DESC";
 139                                 $statement = WCF::getDB()->prepareStatement($sql, ARTICLE_RELATED_ARTICLES);
 140                                 $statement->execute($conditionBuilder->getParameters());
 141                                 $articleContentIDs = $statement->fetchAll(\PDO::FETCH_COLUMN);
 142
 143                                 if (!empty($articleContentIDs)) {
 144                                         $conditionBuilder = new PreparedStatementConditionBuilder();
 145                                         $conditionBuilder->add('articleContentID IN (?)', [$articleContentIDs]);
 146                                         $sql = "SELECT          articleID
 147                                                 FROM            wcf" . WCF_N . "_article_content
 148                                                 " . $conditionBuilder;
 149                                         $statement = WCF::getDB()->prepareStatement($sql);
 150                                         $statement->execute($conditionBuilder->getParameters());
 151                                         $articleIDs = $statement->fetchAll(\PDO::FETCH_COLUMN);
 152
 153                                         $this->relatedArticles = new AccessibleArticleList();
 154                                         $this->relatedArticles->getConditionBuilder()->add('article.articleID IN (?)', [$articleIDs]);
 155                                         $this->relatedArticles->sqlOrderBy = 'article.time';
 156                                         $this->relatedArticles->readObjects();
 157                                 }
 158                         }
 159                 }
 160
 161                 // set location
 162                 PageLocationManager::getInstance()->addParentLocation('com.woltlab.wcf.CategoryArticleList', $this->article->categoryID, $this->article->getCategory());
 163                 foreach (array_reverse($this->article->getCategory()->getParentCategories()) as $parentCategory) {
 164                         PageLocationManager::getInstance()->addParentLocation('com.woltlab.wcf.CategoryArticleList', $parentCategory->categoryID, $parentCategory);
 165                 }
 166         }
 167
 168         /**
 169          * @inheritDoc
 170          */
 171         public function assignVariables() {
 172                 parent::assignVariables();
 173
 174                 WCF::getTPL()->assign([
 175                         'articleContentID' => $this->articleContentID,
 176                         'articleContent' => $this->articleContent,
 177                         'article' => $this->article,
 178                         'category' => $this->category,
 179                         'relatedArticles' => $this->relatedArticles,
 180                         'tags' => $this->tags
 181                 ]);
 182         }
 183 }