Your IP : 216.73.216.170
<?php
/**
* @package com_zoo
* @author YOOtheme http://www.yootheme.com
* @copyright Copyright (C) YOOtheme GmbH
* @license http://www.gnu.org/licenses/gpl.html GNU/GPL
*/
/*
Class: ElementRating
The rating element class
*/
class ElementRating extends Element {
/*
Function: Constructor
*/
public function __construct() {
// call parent constructor
parent::__construct();
// set callbacks
$this->registerCallback('vote');
if ($this->app->system->application->isAdmin()) {
$this->registerCallback('reset');
}
}
/*
Function: getSearchData
Get elements search data.
Returns:
String - Search data
*/
public function getSearchData() {
return $this->getRating();
}
/*
Function: hasValue
Checks if the element's value is set.
Parameters:
$params - render parameter
Returns:
Boolean - true, on success
*/
public function hasValue($params = array()) {
return true;
}
/*
Function: render
Override. Renders the element.
Parameters:
$params - render parameter
Returns:
String - html
*/
public function render($params = array()) {
// init vars
$params = $this->app->data->create($params);
$stars = $this->config->get('stars');
$allow_vote = $this->config->get('allow_vote');
$disabled = $params->get('rating_disabled', false);
$show_message = $params->get('show_message', false);
$show_microdata = $params->get('show_microdata', false);
// init vars
$link = $this->app->link(array('task' => 'callelement', 'format' => 'raw', 'item_id' => $this->_item->id, 'element' => $this->identifier), false);
$rating = $this->getRating();
$votes = (int) $this->get('votes', 0);
// render layout
if ($layout = $this->getLayout()) {
return $this->renderLayout($layout, compact('instance', 'stars', 'allow_vote', 'disabled', 'show_message', 'show_microdata', 'rating', 'votes', 'link'));
}
return null;
}
/*
Function: edit
Renders the edit form field.
Returns:
String - html
*/
public function edit() {
$controller = $this->app->request->getWord('controller');
$url = $this->app->link(array('controller' => $controller, 'format' => 'raw', 'type' => $this->getType()->identifier, 'elm_id' => $this->identifier, 'item_id' => $this->getItem()->id), false);
// render layout
if ($layout = $this->getLayout('edit.php')) {
return $this->renderLayout($layout, compact('url'));
}
}
/*
Function: loadAssets
Load elements css/js assets.
Returns:
Void
*/
public function loadAssets() {
$this->app->document->addScript('elements:rating/assets/js/rating.js');
return $this;
}
public function reset() {
$query = 'DELETE'
.' FROM ' . ZOO_TABLE_RATING
.' WHERE item_id = '.(int) $this->getItem()->id;
$this->app->database->query($query);
$this->set('votes', 0);
$this->set('value', 0);
//save item
$this->app->table->item->save($this->getItem());
return $this->edit();
}
/*
Function: rating
Get rating.
Returns:
String - Rating number
*/
public function getRating() {
return number_format((double) $this->get('value', 0), 1);
}
/*
Function: vote
Execute vote.
Returns:
String - Message
*/
public function vote($vote = null) {
// init vars
$max_stars = $this->config->get('stars');
$allow_vote = $this->config->get('allow_vote', $this->app->joomla->getDefaultAccess());
$db = $this->app->database;
$user = $this->app->user->get();
$date = $this->app->date->create();
$vote = (int) $vote;
for ($i = 1; $i <= $max_stars; $i++) {
$stars[] = $i;
}
if (!$this->app->user->canAccess($user, $allow_vote)) {
return json_encode(array(
'value' => 0,
'message' => JText::_('NOT_ALLOWED_TO_VOTE')
));
}
if (in_array($vote, $stars) && ($ip = $this->app->useragent->ip())) {
// check if ip already exists
$query = 'SELECT *'
.' FROM ' . ZOO_TABLE_RATING
.' WHERE element_id = '.$db->Quote($this->identifier)
.' AND item_id = '.(int) $this->_item->id
.' AND ip = '.$db->Quote($ip);
$db->query($query);
// voted already
if ($db->getNumRows()) {
return json_encode(array(
'value' => 0,
'message' => JText::_("You've already voted")
));
}
// insert vote
$query = "INSERT INTO " . ZOO_TABLE_RATING
." SET element_id = ".$db->Quote($this->identifier)
." ,item_id = ".(int) $this->_item->id
." ,user_id = ".(int) $user->id
." ,value = ".(int) $vote
." ,ip = ".$db->Quote($ip)
." ,created = ".$db->Quote($date->toSQL());
// execute query
$db->query($query);
// calculate rating/votes
$query = 'SELECT AVG(value) AS rating, COUNT(id) AS votes'
.' FROM ' . ZOO_TABLE_RATING
.' WHERE element_id = '.$db->Quote($this->identifier)
.' AND item_id = '.$this->_item->id
.' GROUP BY item_id';
if ($res = $db->queryAssoc($query)) {
$this->set('votes', $res['votes']);
$this->set('value', $res['rating']);
} else {
$this->set('votes', 0);
$this->set('value', 0);
}
}
//save item
$this->app->table->item->save($this->getItem());
return json_encode(array(
'value' => intval($this->getRating() / $max_stars * 100),
'message' => sprintf(JText::_('%s rating from %s votes'), $this->getRating(), $this->get('votes'))
));
}
/*
Function: bindData
Set data through data array.
Parameters:
$data - array
Returns:
Void
*/
public function bindData($data = array()) {
parent::bindData($data);
// calculate rating/votes
$query = 'SELECT AVG(value) AS rating, COUNT(id) AS votes'
.' FROM ' . ZOO_TABLE_RATING
.' WHERE element_id = '.$this->app->database->Quote($this->identifier)
.' AND item_id = '.$this->_item->id
.' GROUP BY item_id';
if ($this->_item->id && $res = $this->app->database->queryAssoc($query)) {
$this->set('votes', $res['votes']);
$this->set('value', $res['rating']);
} else {
$this->set('votes', 0);
$this->set('value', 0);
}
}
}