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\ArticleAction;
   7 use wcf\data\article\ArticleEditor;
   8 use wcf\data\article\ViewableArticle;
   9 use wcf\data\tag\Tag;
  10 use wcf\system\database\util\PreparedStatementConditionBuilder;
  11 use wcf\system\exception\IllegalLinkException;
  12 use wcf\system\exception\PermissionDeniedException;
  13 use wcf\system\language\LanguageFactory;
  14 use wcf\system\page\PageLocationManager;
  15 use wcf\system\tagging\TagEngine;
  16 use wcf\system\WCF;
  17
  18 /**
  19  * Abstract implementation of the article page.
  20  *
  21  * @author      Marcel Werk
  22  * @copyright   2001-2018 WoltLab GmbH
  23  * @license     GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
  24  * @package     WoltLabSuite\Core\Page
  25  * @since       3.0
  26  */
  27 abstract class AbstractArticlePage extends AbstractPage {
  28         /**
  29          * @inheritDoc
  30          */
  31         public $neededModules = ['MODULE_ARTICLE'];
  32
  33         /**
  34          * article content id
  35          * @var integer
  36          */
  37         public $articleContentID = 0;
  38
  39         /**
  40          * article content object
  41          * @var ViewableArticleContent
  42          */
  43         public $articleContent;
  44
  45         /**
  46          * article object
  47          * @var ViewableArticle
  48          */
  49         public $article;
  50
  51         /**
  52          * list of tags
  53          * @var Tag[]
  54          */
  55         public $tags = [];
  56
  57         /**
  58          * category object
  59          * @var ArticleCategory
  60          */
  61         public $category;
  62
  63         /**
  64          * list of related articles
  65          * @var AccessibleArticleList
  66          */
  67         public $relatedArticles;
  68
  69         /**
  70          * @inheritDoc
  71          */
  72         public function readParameters() {
  73                 parent::readParameters();
  74
  75                 if (isset($_REQUEST['id'])) $this->articleContentID = intval($_REQUEST['id']);
  76                 $this->articleContent = ViewableArticleContent::getArticleContent($this->articleContentID);
  77                 if ($this->articleContent === null) {
  78                         throw new IllegalLinkException();
  79                 }
  80                 $this->article = ViewableArticle::getArticle($this->articleContent->articleID, false);
  81                 $this->category = $this->article->getCategory();
  82
  83                 // update interface language
  84                 if (!WCF::getUser()->userID && $this->article->isMultilingual && $this->articleContent->languageID != WCF::getLanguage()->languageID) {
  85                         WCF::setLanguage($this->articleContent->languageID);
  86                 }
  87         }
  88
  89         /**
  90          * @inheritDoc
  91          */
  92         public function checkPermissions() {
  93                 parent::checkPermissions();
  94
  95                 if (!$this->article->canRead()) {
  96                         throw new PermissionDeniedException();
  97                 }
  98         }
  99
 100         /**
 101          * @inheritDoc
 102          */
 103         public function readData() {
 104                 parent::readData();
 105
 106                 // update view count
 107                 $articleEditor = new ArticleEditor($this->article->getDecoratedObject());
 108                 $articleEditor->updateCounters([
 109                         'views' => 1
 110                 ]);
 111
 112                 // update article visit
 113                 if (ARTICLE_ENABLE_VISIT_TRACKING && $this->article->isNew()) {
 114                         $articleAction = new ArticleAction([$this->article->getDecoratedObject()], 'markAsRead', [
 115                                 'viewableArticle' => $this->article
 116                         ]);
 117                         $articleAction->executeAction();
 118                 }
 119
 120                 // get tags
 121                 if (MODULE_TAGGING && WCF::getSession()->getPermission('user.tag.canViewTag')) {
 122                         $this->tags = TagEngine::getInstance()->getObjectTags(
 123                                 'com.woltlab.wcf.article',
 124                                 $this->articleContent->articleContentID,
 125                                 [$this->articleContent->languageID ?: LanguageFactory::getInstance()->getDefaultLanguageID()]
 126                         );
 127                 }
 128
 129                 // get related articles
 130                 if (MODULE_TAGGING && ARTICLE_RELATED_ARTICLES) {
 131                         if (!empty($this->tags)) {
 132                                 $conditionBuilder = new PreparedStatementConditionBuilder();
 133                                 $conditionBuilder->add('objectTypeID = ?', [TagEngine::getInstance()->getObjectTypeID('com.woltlab.wcf.article')]);
 134                                 $conditionBuilder->add('tagID IN (?)', [array_keys($this->tags)]);
 135                                 $conditionBuilder->add('objectID <> ?', [$this->articleContentID]);
 136                                 $sql = "SELECT          objectID, COUNT(*) AS count
 137                                         FROM            wcf" . WCF_N . "_tag_to_object
 138                                         " . $conditionBuilder . "
 139                                         GROUP BY        objectID
 140                                         HAVING          COUNT(*) >= " . round(count($this->tags) * ARTICLE_RELATED_ARTICLES_MATCH_THRESHOLD / 100) . "
 141                                         ORDER BY        count DESC";
 142                                 $statement = WCF::getDB()->prepareStatement($sql, ARTICLE_RELATED_ARTICLES);
 143                                 $statement->execute($conditionBuilder->getParameters());
 144                                 $articleContentIDs = $statement->fetchAll(\PDO::FETCH_COLUMN);
 145
 146                                 if (!empty($articleContentIDs)) {
 147                                         $conditionBuilder = new PreparedStatementConditionBuilder();
 148                                         $conditionBuilder->add('articleContentID IN (?)', [$articleContentIDs]);
 149                                         $sql = "SELECT          articleID
 150                                                 FROM            wcf" . WCF_N . "_article_content
 151                                                 " . $conditionBuilder;
 152                                         $statement = WCF::getDB()->prepareStatement($sql);
 153                                         $statement->execute($conditionBuilder->getParameters());
 154                                         $articleIDs = $statement->fetchAll(\PDO::FETCH_COLUMN);
 155
 156                                         $this->relatedArticles = new AccessibleArticleList();
 157                                         $this->relatedArticles->getConditionBuilder()->add('article.articleID IN (?)', [$articleIDs]);
 158                                         $this->relatedArticles->sqlOrderBy = 'article.time';
 159                                         $this->relatedArticles->readObjects();
 160                                 }
 161                         }
 162                 }
 163
 164                 // set location
 165                 PageLocationManager::getInstance()->addParentLocation('com.woltlab.wcf.CategoryArticleList', $this->article->categoryID, $this->article->getCategory());
 166                 foreach (array_reverse($this->article->getCategory()->getParentCategories()) as $parentCategory) {
 167                         PageLocationManager::getInstance()->addParentLocation('com.woltlab.wcf.CategoryArticleList', $parentCategory->categoryID, $parentCategory);
 168                 }
 169         }
 170
 171         /**
 172          * @inheritDoc
 173          */
 174         public function assignVariables() {
 175                 parent::assignVariables();
 176
 177                 WCF::getTPL()->assign([
 178                         'articleContentID' => $this->articleContentID,
 179                         'articleContent' => $this->articleContent,
 180                         'article' => $this->article,
 181                         'category' => $this->category,
 182                         'relatedArticles' => $this->relatedArticles,
 183                         'tags' => $this->tags
 184                 ]);
 185         }
 186 }