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‎controllers/PageLoader.php‎

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<?php
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/**
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* Tester.su pages rendering without forms.
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*/
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abstract class Loader
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{
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/**
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* The Factory Method.
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* Get input out URL.
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* @url https://ru.wikipedia.org/wiki/%D0%A4%D0%B0%D0%B1%D1%80%D0%B8%D1%87%D0%BD%D1%8B%D0%B9_%D0%BC%D0%B5%D1%82%D0%BE%D0%B4_(%D1%88%D0%B0%D0%B1%D0%BB%D0%BE%D0%BD_%D0%BF%D1%80%D0%BE%D0%B5%D0%BA%D1%82%D0%B8%D1%80%D0%BE%D0%B2%D0%B0%D0%BD%D0%B8%D1%8F)
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*/
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/**
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* Returns an object based on type.
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*
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* @param string $page
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*
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* @param array $param
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*
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* @return object
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*/
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public static function initial( $page, $param )
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{
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return new $page( $param );
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}
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/**
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* Validation and actions with data.
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*
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* @param array $get
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*
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* @return void
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*/
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public function __construct( $get )
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{
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/**
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* @var array
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*/
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$this->data = $get;
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}
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/**
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* Displays the template using params taken from the DB.
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*
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* @param template
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*
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* @return void
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*/
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abstract public function showPage( $template );
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}
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final class Index extends Loader
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{
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/**
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* Index.php.
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* Displays the questions based on page param.
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*/
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/**
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* @see Loader::__construct
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*
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* Page GET param validation and gets a questions information from the DB.
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*/
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public function __construct( $get )
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{
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parent::__construct( $get );
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/**
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* @var integer
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*/
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$this->page = ( int ) @$this->data['page'];
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/**
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* @var integer
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*/
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$this->all_pages = ceil( R::count( 'questions' ) / 10 );
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/**
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* @var integer
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*/
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$this->all_questions = R::count( 'questions' );
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if ( !is_int( $this->page ) || !$this->page || !R::count( 'questions', 'id > ?', array( ( $this->page-1 ) * 10 ) ) )
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{
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$this->page = 1;
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}
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$beans[] = R::findAll( 'questions', 'WHERE date BETWEEN ? AND ? ORDER BY views DESC LIMIT ?',
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array( date( "Y-m-d", time() - 60 * 60 * 24 * 7 ), date( "Y-m-d" ), 10 ) );
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$beans[] = R::findAll( 'questions', 'WHERE id BETWEEN ? AND ? ORDER BY views DESC LIMIT ?',
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array( ( $this->page - 1 ) * 10, $this->page * 10 , 10 ) );
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foreach ($beans as $item)
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{
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$tmp_array = array();
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foreach ($item as $i) {
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$tmp_array[] = $i;
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}
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$this->questions[] = $tmp_array;
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}
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/**
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* @var array
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*/
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$this->page_numbers = self::getPagination();
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}
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/**
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* Gets an information to the pagination to the template.
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*
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* @return array
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*/
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private function getPagination()
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{
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if ( $this->page == $this->all_pages )
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{
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for ($i=1; $i < 3; $i++)
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{
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if ( $this->page-$i > 0 )
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{
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$p[] = $this->page-$i;
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} else
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{
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break;
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}
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}
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} else
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{
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if ( $this->page-1 >= 1 )
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{
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$p[] = $this->page-1;
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}
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$p[] = $this->page;
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for ($i=1; $i < 3; $i++)
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{
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if ( $this->page+$i < $this->all_pages )
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{
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$p[] = $this->page+$i;
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} else
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{
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break;
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}
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}
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}
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$p[] = $this->all_pages;
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sort( $p );
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return $p;
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}
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/**
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* @see Loader::showPage
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*/
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public function showPage( $template )
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{
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load_template( $template, array(
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'message_color' => 'green',
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'message' => 'Welcome to the forum, '.htmlspecialchars_decode( $_SESSION['user']->login, ENT_QUOTES).'!',
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'user' => $_SESSION['user'],
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'questions' => $this->questions,
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'all' => $this->all_questions,
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'p' => $this->page_numbers ) );
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}
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}
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final class Forum extends Loader
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{
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/**
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* Forum.php.
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* Displays the question based on id param.
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*/
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/**
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* @see Loader::__construct
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*
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* Id GET param validation and views increased, if need were.
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*/
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public function __construct( $get )
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{
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parent::__construct( $get );
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/**
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* @var integer
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*/
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$this->id = ( int ) @$this->data['id'];
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if ( !is_int( $this->id ) || !$this->id )
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{
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header( 'Location: ask.php' );
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}
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if ( !R::count( 'questions', 'id = ?', array( $this->id ) ) )
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{
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header( 'Location: ask.php' );
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}
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self::viewsCounter();
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}
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/**
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* Question views counter method.
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* If the user not visit the question today,
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* the views row will be increased for 1.
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*
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* @return void
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*/
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private function viewsCounter()
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{
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if ( !R::count( 'visitors', 'visistor_id = ? AND page_id = ? AND visit_date = ?',
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array( $_SESSION['user']->id, $this->id, date( "Y-m-d" ) ) ) )
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{
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/* DB cleaning */
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$trash_visit = R::findOne( 'visitors', 'visistor_id = ? AND page_id = ?', array(
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$_SESSION['user']->id, $this->id ) );
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if ( $trash_visit )
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{
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R::trash( $trash_visit );
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}
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/* Commits new visit */
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$visit = R::dispense( 'visitors' );
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$visit->visistor_id = $_SESSION['user']->id;
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$visit->page_id = $this->id;
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$visit->visit_date = date( "Y-m-d" );
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R::store( $visit );
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$question = R::findOne( 'questions', 'id = ?', array( $this->id ) );
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$question->views ++;
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R::store( $question );
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}
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}
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/**
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* @see Loader::showPage
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*/
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public function showPage( $template )
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{
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$data = R::findOne( 'questions', 'id = ?', array( $this->id ) );
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$data = array(
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'title' => $data['title'],
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'name' => $data['author'],
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'views' => $data['views'],
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'image' => $data['preview'],
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'text' => $data['body'],
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'date' => $data['date'] );
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load_template( $template, array(
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'data' => $data ) );
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}
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}

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