lifetype/branches/lifetype-1.0.6/class/action/viewarticleaction.class.php

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<?php

        include_once( PLOG_CLASS_PATH."class/action/blogaction.class.php" );
    include_once( PLOG_CLASS_PATH."class/dao/blogs.class.php" );
    include_once( PLOG_CLASS_PATH."class/dao/articles.class.php" );
        include_once( PLOG_CLASS_PATH."class/dao/articlecategories.class.php" );
    include_once( PLOG_CLASS_PATH."class/dao/users.class.php" );
    include_once( PLOG_CLASS_PATH."class/dao/referers.class.php" );
    include_once( PLOG_CLASS_PATH."class/data/textfilter.class.php" );
    include_once( PLOG_CLASS_PATH."class/view/errorview.class.php" );
        include_once( PLOG_CLASS_PATH."class/view/viewarticleview.class.php" );
        include_once( PLOG_CLASS_PATH.'class/data/timestamp.class.php' );
        include_once( PLOG_CLASS_PATH."class/data/validator/integervalidator.class.php" );
        include_once( PLOG_CLASS_PATH."class/data/validator/stringvalidator.class.php" );       

        class ViewArticleAction extends BlogAction
    {

        var $_config;
        var $_articleId;
                var $_articleName;
                var $_date;
                var $_maxDate;
                var $_userId;
                var $_userName;
                var $_categoryId;
                var $_categoryName;

                function ViewArticleAction( $actionInfo, $request )
        {
                        $this->BlogAction( $actionInfo, $request );
                        
                        $this->registerFieldValidator( "articleId", new IntegerValidator(), true );
                        $this->registerFieldValidator( "articleName", new StringValidator(), true );
                        $this->registerFieldValidator( "postCategoryId", new IntegerValidator(), true );
                        $this->registerFieldValidator( "postCategoryName", new StringValidator(), true );
                        $this->registerFieldValidator( "userId", new IntegerValidator(), true );
                        $this->registerFieldValidator( "userName", new StringValidator(), true );

                        $this->setValidationErrorView( new ErrorView( $this->_blogInfo, "error_fetching_article" ));
        }
        
        // checks that the articleId is valid
        function validate()
        {
                        if( !parent::validate())
                                return( false );
        
                $this->_articleId = $this->_request->getValue( "articleId" );
                        $this->_articleName = $this->_request->getValue( "articleName" );
                        // find some other additional parameters and use some 'null' values
                        // in casuse they're empty
                        $this->_categoryId = $this->_request->getValue( "postCategoryId", -1 );
                        $this->_categoryName = $this->_request->getValue( "postCategoryName" );
                        $this->_userId = $this->_request->getValue( "userId", -1 );
                        $this->_userName = $this->_request->getValue( "userName" );
                        $this->_date = $this->_request->getValue( "Date", -1 );
                $val = new IntegerValidator();
                if( !$val->validate( $this->_date ) ) {
                $this->_date = -1;
            }
                        $this->_isCommentAdded = ($this->_request->getValue( "op" ) == "AddComment" );
                        
                        // Caculate the correct article date period
                        $adjustedDates = $this->_getCorrectedDatePeriod( $this->_date );
                        $this->_date = $adjustedDates["adjustedDate"];
                        $this->_maxDate = $adjustedDates["maxDate"];

            return true;
        }
                
                function _setErrorView()
                {
                        $this->_view = new ErrorView( $this->_blogInfo );
                        $this->_view->setValue( "message", "error_fetching_article" );
                        $this->setCommonData();         
                }
                
                function _updateArticleReferrers($article){
                        $this->_updateArticleReferrersById($article->getId());
                }
        function _updateArticleReferrersById($articleId){
            if ( array_key_exists( 'HTTP_REFERER', $_SERVER ) )
            {
                $referrers = new Referers();
                $referrers->addReferer( $_SERVER['HTTP_REFERER'], 
                                        $articleId, $this->_blogInfo->getId());
            }
        }
                function _updateArticleReferrersByTitle($slug){
                        $id = $this->articles->getArticleIdFromName($slug);
                        // if the article isn't found, we will save a referrer to
                    // the main page, since $id will be 0.
                        $this->_updateArticleReferrersById($id);
                }
                
                function updateNumArticleReads( $articleId )
                {
                        $this->articles->updateArticleNumReads( $articleId );
                        
                        return( true );
                }

        function perform()
        {
                $this->_view = new ViewArticleView( $this->_blogInfo, 
                                                   Array( "articleId" => $this->_articleId,
                                                          "articleName" => $this->_articleName,
                                                          "categoryId" => $this->_categoryId,
                                                          "categoryName" => $this->_categoryName,
                                                          "userId" => $this->_userId,
                                                          "userName" => $this->_userName,
                                                          "date" => $this->_date ));
                                                                                                                  
                        if( $this->_view->isCached()) {
                                if( $this->_config->getValue( 'update_cached_article_reads', false )) {
                                        if( $this->_articleId ){
                                                $this->articles->updateArticleNumReads( $this->_articleId );
                        $this->_updateArticleReferrersById( $this->_articleId );
                    }
                                        else{
                                                $this->articles->updateArticleNumReadsByName( $this->_articleName );
                        $this->_updateArticleReferrersByTitle($this->_articleName );
                    }
                                }
                                
                                return true;
                        }
                                                                                                                  
                        // ---
                        // if we got a category name or a user name instead of a category
                        // id and a user id, then we have to look up first those
                        // and then proceed
                        // ---
                        // users...
                        if( $this->_userName ) {
                                $users = new Users();
                                $user = $users->getUserInfoFromUsername( $this->_userName );
                                if( !$user ) {
                                        $this->_setErrorView();
                                        return false;                           
                                }
                                // if there was a user, use his/her id
                                $this->_userId = $user->getId();
                        }
                        // ...and categories...
                        if( $this->_categoryName ) {
                                $categories = new ArticleCategories();
                                $category = $categories->getCategoryByName( $this->_categoryName, $this->_blogInfo->getId());
                                if( !$category ) {
                                        $this->_setErrorView();
                                        return false;
                                }
                                // if there was a user, use his/her id
                                $this->_categoryId = $category->getId();
                        }
                
            // fetch the article
            // the article identifier can be either its internal id number or its mangled topic
            if( $this->_articleId ) { 
                $article  = $this->articles->getBlogArticle( $this->_articleId, $this->_blogInfo->getId(), false, 
                                                                       $this->_date, $this->_categoryId, $this->_userId,
                                                                                                           POST_STATUS_PUBLISHED, $this->_maxDate );
                        }
            else {
                $article  = $this->articles->getBlogArticleByTitle( $this->_articleName, $this->_blogInfo->getId(), false,
                                                                              $this->_date, $this->_categoryId, $this->_userId,
                                                                                                                          POST_STATUS_PUBLISHED, $this->_maxDate );
                        }
                                
            // if the article id doesn't exist, cancel the whole thing...
            if( !$article ) {
                                $this->_setErrorView();
                return false;
            }
                        
                        // throw the correct event
                        $this->notifyEvent( EVENT_POST_LOADED, Array( "article" => &$article ));                        

            // check if we have to update how many times an article has been read
            if( $this->_config->getValue( "update_article_reads" )) {
                                $this->updateNumArticleReads( $article->getId());
            }
                        
                        // update the referrers, if needed
                        $this->_updateArticleReferrers( $article );
                                                
            // if everything's fine, we set up the article object for the view
            $this->_view->setArticle( $article );
            $this->setCommonData();
                        
            // and return everything normal
            return true;
        }
    }
?>

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