wikimedia / mediawiki

	 * @return string Content model id

	 */

	public function getContentModel( $flags = 0 ) {

		if ( !$this->mContentModel && $this->getArticleID( $flags ) ) {

			$linkCache = LinkCache::singleton();

			$linkCache->addLinkObj( $this ); # in case we already had an article ID

			$this->mContentModel = $linkCache->getGoodLinkFieldObj( $this, 'model' );

		}

		if ( !$this->mContentModel ) {

			$this->mContentModel = ContentHandler::getDefaultModelFor( $this );

		// check, if the page language could be saved in the database, and if so and

		// the value is not requested already, lookup the page language using LinkCache

		if ( $wgPageLanguageUseDB && $this->mDbPageLanguage === false ) {

			$linkCache = LinkCache::singleton();

			$linkCache->addLinkObj( $this );

			$this->mDbPageLanguage = $linkCache->getGoodLinkFieldObj( $this, 'lang' );

		}

		return $this->mDbPageLanguage;

	}