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                 $this->article = ViewableArticle::getArticle($this->articleContent->articleID, false);
  80                 $this->category = $this->article->getCategory();
  81
  82                 // update interface language
  83                 if (!WCF::getUser()->userID && $this->article->isMultilingual && $this->articleContent->languageID != WCF::getLanguage()->languageID) {
  84                         WCF::setLanguage($this->articleContent->languageID);
  85                 }
  86         }
  87
  88         /**
  89          * @inheritDoc
  90          */
  91         public function checkPermissions() {
  92                 parent::checkPermissions();
  93
  94                 if (!$this->article->canRead()) {
  95                         throw new PermissionDeniedException();
  96                 }
  97         }
  98
  99         /**
 100          * @inheritDoc
 101          */
 102         public function readData() {
 103                 parent::readData();
 104
 105                 // update view count
 106                 $articleEditor = new ArticleEditor($this->article->getDecoratedObject());
 107                 $articleEditor->updateCounters([
 108                         'views' => 1
 109                 ]);
 110
 111                 // get tags
 112                 if (MODULE_TAGGING && WCF::getSession()->getPermission('user.tag.canViewTag')) {
 113                         $this->tags = TagEngine::getInstance()->getObjectTags(
 114                                 'com.woltlab.wcf.article',
 115                                 $this->articleContent->articleContentID,
 116                                 [$this->articleContent->languageID ?: LanguageFactory::getInstance()->getDefaultLanguageID()]
 117                         );
 118                 }
 119
 120                 // get related articles
 121                 if (MODULE_TAGGING && ARTICLE_RELATED_ARTICLES) {
 122                         if (!empty($this->tags)) {
 123                                 $conditionBuilder = new PreparedStatementConditionBuilder();
 124                                 $conditionBuilder->add('objectTypeID = ?', [TagEngine::getInstance()->getObjectTypeID('com.woltlab.wcf.article')]);
 125                                 $conditionBuilder->add('tagID IN (?)', [array_keys($this->tags)]);
 126                                 $conditionBuilder->add('objectID <> ?', [$this->articleContentID]);
 127                                 $sql = "SELECT          objectID, COUNT(*) AS count
 128                                         FROM            wcf" . WCF_N . "_tag_to_object
 129                                         " . $conditionBuilder . "
 130                                         GROUP BY        objectID
 131                                         HAVING          COUNT(*) >= " . round(count($this->tags) * ARTICLE_RELATED_ARTICLES_MATCH_THRESHOLD / 100) . "
 132                                         ORDER BY        count DESC";
 133                                 $statement = WCF::getDB()->prepareStatement($sql, ARTICLE_RELATED_ARTICLES);
 134                                 $statement->execute($conditionBuilder->getParameters());
 135                                 $articleContentIDs = $statement->fetchAll(\PDO::FETCH_COLUMN);
 136
 137                                 if (!empty($articleContentIDs)) {
 138                                         $conditionBuilder = new PreparedStatementConditionBuilder();
 139                                         $conditionBuilder->add('articleContentID IN (?)', [$articleContentIDs]);
 140                                         $sql = "SELECT          articleID
 141                                                 FROM            wcf" . WCF_N . "_article_content
 142                                                 " . $conditionBuilder;
 143                                         $statement = WCF::getDB()->prepareStatement($sql);
 144                                         $statement->execute($conditionBuilder->getParameters());
 145                                         $articleIDs = $statement->fetchAll(\PDO::FETCH_COLUMN);
 146
 147                                         $this->relatedArticles = new AccessibleArticleList();
 148                                         $this->relatedArticles->getConditionBuilder()->add('article.articleID IN (?)', [$articleIDs]);
 149                                         $this->relatedArticles->sqlOrderBy = 'article.time';
 150                                         $this->relatedArticles->readObjects();
 151                                 }
 152                         }
 153                 }
 154
 155                 // set location
 156                 PageLocationManager::getInstance()->addParentLocation('com.woltlab.wcf.CategoryArticleList', $this->article->categoryID, $this->article->getCategory());
 157                 foreach (array_reverse($this->article->getCategory()->getParentCategories()) as $parentCategory) {
 158                         PageLocationManager::getInstance()->addParentLocation('com.woltlab.wcf.CategoryArticleList', $parentCategory->categoryID, $parentCategory);
 159                 }
 160         }
 161
 162         /**
 163          * @inheritDoc
 164          */
 165         public function assignVariables() {
 166                 parent::assignVariables();
 167
 168                 WCF::getTPL()->assign([
 169                         'articleContentID' => $this->articleContentID,
 170                         'articleContent' => $this->articleContent,
 171                         'article' => $this->article,
 172                         'category' => $this->category,
 173                         'relatedArticles' => $this->relatedArticles,
 174                         'tags' => $this->tags
 175                 ]);
 176         }
 177 }