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post-ratings.1
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post-ratings.php
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<?php /* Plugin Name: Post Ratings Version: 2.4 Plugin URI: http://digitalnature.eu/forum/plugins/post-ratings/ Description: Simple, developer-friendly, straightforward post rating plugin. Relies on post meta to store avg. rating / vote count. Author: digitalnature Author URI: http://digitalnature.eu/ Text Domain: post-ratings Domain Path: /lang */ /* * Public methods you can call from outside: * * PostRatings()->getControl() - gets the rate links * PostRatings()->currentUserCanRate($post_id) - checks if the current user can rate that post * PostRatings()->getTopRated($options) - gets a list of top rated posts... * * * */ /* * PostRatings Class * * @since 1.0 */ class PostRatings{ const VERSION = '2.4', // plugin version PROJECT_URI = 'http://digitalnature.eu/forum/plugins/post-ratings/', // url to support forums ID = 'post-ratings', // internally used for text domain, theme option group name etc. MIN_VOTES = 1, // minimum vote count (MV) BR1 = '(v / (v + MV)) * r + (MV / (v + MV)) * R', // bayesian rating formula: the IMDB version BR2 = '((AV * R) + (v * r)) / (AV + v)'; // bayesian rating formula: thebroth.com version protected static $instance; protected $options = null, // stores rated post IDs for the current session; // we're using this for to get the rated state in our ajax calls $rated_posts = array(), // default option values $defaults = array( 'version' => self::VERSION, 'anonymous_vote' => true, 'max_rating' => 5, 'bayesian_formula' => self::BR1, 'user_formula' => '', 'custom_filter' => '', 'before_post' => false, 'after_post' => false, 'post_types' => array('post', 'page', 'attachment'), 'visibility' => array('home', 'singular', 'archive', 'search'), // same as WP conditional "tags", but with "is_" omitted // internal, global stats 'avg_rating' => 0, 'num_votes' => 0, 'num_rated_posts' => 0, ); /* * This will instantiate the class if needed, and return the only class instance if not... * * @since 1.0 */ public static function app(){ // first run? if(!(self::$instance instanceof self)){ self::$instance = new self(); // localize load_plugin_textdomain(self::ID, false, dirname(plugin_basename(__FILE__)).'/lang'); if(is_admin()){ add_action('admin_menu', array(self::$instance, 'CreateMenu')); add_action('admin_init', array(self::$instance, 'RegisterSettings')); }else{ add_action('wp', array(self::$instance, 'Run')); } // register shortcode add_shortcode('rate', array(self::$instance, 'Shortcode')); // register widget add_action('widgets_init', array(self::$instance, 'Widget')); // empty our cache when a new post is written or when a post gets deleted add_action('save_post', array(self::$instance, 'clearQueryCache')); add_action('deleted_post', array(self::$instance, 'clearQueryCache')); // run on plugin uninstall; not sure when does this run?! register_uninstall_hook(__FILE__, array(__CLASS__, 'Uninstall')); } return self::$instance; } /* * A single instance only * * @since 1.0 */ final protected function __construct(){ // initialize early, to avoid endless loop within update_option() + settings validation callback. // stupid settings API... $this->getOptions(); } /* * No cloning * * @since 1.0 */ final protected function __clone(){} /* * Returns one or all plugin options. * * @since 1.0 * @param string $key Option to get; if not given all options are returned * @return mixed Option(s) */ public function getOptions($key = false){ // first call, initialize the options if(!isset($this->options)){ $options = get_option(self::ID); // options exist if($options !== false){ if(!isset($options['version'])) $options['version'] = '1.0'; $new_version = version_compare($options['version'], self::VERSION, '!='); $desync = array_diff_key($this->defaults, $options) !== array_diff_key($options, $this->defaults); // update options if version changed, or we have missing/extra (out of sync) option entries if($new_version || $desync){ $new_options = array(); // check for new options and set defaults if necessary foreach($this->defaults as $option => $value) $new_options[$option] = isset($options[$option]) ? $options[$option] : $value; // update version info $new_options['version'] = self::VERSION; update_option(self::ID, $new_options); $this->options = $new_options; // no update was required }else{ $this->options = $options; } // new install (plugin was just activated) }else{ update_option(self::ID, $this->defaults); $this->options = $this->defaults; } } return $key ? $this->options[$key] : $this->options; } /* * Loads a template file from the theme or child theme directory. * * @since 1.0 * @param string $_name Template name, without the '.php' suffix * @param array $_vars Variables to expose in the template. Note that unlike WP, we're not exposing all the global variable mess inside it... */ final public function loadTemplate($_name, $_vars = array()){ // you cannot let locate_template to load your template // because WP devs made sure you can't pass // variables to your template :( $_located = locate_template("{$_name}.php", false, false); // use the default one if the (child) theme doesn't have it if(!$_located) $_located = dirname(__FILE__).'/templates/'.$_name.'.php'; unset($_name); // create variables if($_vars) extract($_vars); ob_start(); // load it require $_located; return ob_get_clean(); } /* * Hook our plugin options menu / page * * @since 1.0 */ public function CreateMenu(){ add_options_page(__('Post Ratings', self::ID), __('Post Ratings', self::ID), 'manage_options', self::ID, array($this, 'SettingsPage')); } /* * Register our setting with the new useless Settings API bloat... * * @since 1.0 */ public function RegisterSettings(){ register_setting(self::ID, self::ID, array($this, 'ValidateSettings')); add_filter('plugin_action_links', array($this, 'PluginSettingsLink'), 10, 2); } /* * Settings link in the plugin list * * @since 1.0 * @param string $file * @param array $links * @return array */ public function PluginSettingsLink($links, $file){ if(plugin_basename(__FILE__) === $file){ $settings_link = '<a href="'.add_query_arg(array('page' => self::ID), admin_url('options-general.php')).'">'.__('Settings', self::ID).'</a>'; array_unshift($links, $settings_link); } return $links; } /* * Validate user input for our settings * * @since 1.0 * @param array $input * @return array */ public function ValidateSettings($input){ extract($input); $options = array( 'anonymous_vote' => isset($anonymous_vote) ? true : false, 'max_rating' => min(max((int)$max_rating, 1), 10), 'bayesian_formula' => wp_filter_nohtml_kses($bayesian_formula), // only allow super admins to change this, because it's a little sensitive (part of this string is used inside the top rated db query) 'user_formula' => current_user_can('edit_plugins') ? wp_filter_nohtml_kses($user_formula) : $this->getOptions('user_formula'), 'before_post' => isset($before_post) ? true : false, 'after_post' => isset($after_post) ? true : false, 'custom_filter' => wp_filter_nohtml_kses($custom_filter), 'post_types' => isset($post_types) ? array_filter($post_types, 'post_type_exists') : array(), 'visibility' => isset($visibility) ? array_map('wp_filter_nohtml_kses', $visibility) : array(), // internal, global stats 'avg_rating' => $this->getOptions('avg_rating'), 'num_votes' => $this->getOptions('num_votes'), 'num_rated_posts' => $this->getOptions('num_rated_posts'), 'version' => self::VERSION, ); if(isset($remove_ratings) || ($options['max_rating'] !== $this->getOptions('max_rating'))){ $options['avg_rating'] = $options['num_votes'] = $options['num_rated_posts'] = 0; $this->DeleteRatingRecords(); } return $options; } /* * The options page (form) * * @since 1.0 */ public function SettingsPage(){ $options = $this->getOptions(); extract($options); $generic_pages = array( 'home' => __('Home', self::ID), 'archive' => __('Archives', self::ID), 'singular' => __('Single pages', self::ID), 'search' => __('Search results', self::ID), ); ?> <div class="wrap metabox-holder"> <h2><?php _e('Post Ratings', self::ID); ?></h2> <form method="post" action="options.php" style="position:relative;"> <div class="postbox" style="position:absolute;left:0;top:0;"> <h3><span><?php _e('Global stats', self::ID); ?></span></h3> <div class="inside"> <p><?php printf(__('%1$s votes (on %2$s posts)', self::ID), sprintf('<strong>%d</strong>', $num_votes), sprintf('<strong>%d</strong>', $num_rated_posts)); ?></p> <p><?php printf(__('Average vote count per post: %s', self::ID), sprintf('<strong>%.2F</strong>', @($options['num_votes'] / $options['num_rated_posts']))); ?></p> <p><?php printf(__('Average rating per post: %s', self::ID), sprintf('<strong>%.2F</strong>', $avg_rating)); ?></p> </div> </div> <?php settings_fields(self::ID); ?> <table class="form-table"> <tr valign="top"> <th scope="row"><?php _e('Access level', self::ID); ?></th> <td> <label for="anonymous_vote"> <input type="checkbox" id="anonymous_vote" name="<?php echo self::ID; ?>[anonymous_vote]" value="cookie" <?php checked($anonymous_vote); ?> /> <?php _e('Allow unregistered users to vote', self::ID); ?> </label> </td> </tr> <tr valign="top"> <th scope="row"><?php _e('Maximum rating', self::ID); ?></th> <td> <input type="text" size="3" name="<?php echo self::ID; ?>[max_rating]" value="<?php echo $max_rating; ?>" /> <p><span class="description"><?php _e('Changing this option will reset existing post rating records', self::ID); ?></span></p> </td> </tr> <tr valign="top"> <th scope="row"> <?php _e('Bayesian rating (score) formula', self::ID); ?> </th> <td> <fieldset> <p> <label for="bayesian_formula_1"> <input id="bayesian_formula_1" name="<?php echo self::ID; ?>[bayesian_formula]" type="radio" value="<?php echo self::BR1; ?>" <?php checked($bayesian_formula, self::BR1); ?> /> <code style="font-size: 14px;">(<em>v</em> / (<em>v</em> + <strong>MV</strong>)) * <em>r</em> + (<strong>MV</strong> / (<em>v</em> + <strong>MV</strong>)) * <strong>R</strong></code> (<?php printf(__('from %s', self::ID), '<a href="http://en.wikipedia.org/wiki/Internet_Movie_Database#User_ratings_of_films" target="_blank">IMDB</a>'); ?>) </label> </p> <p> <label for="bayesian_formula_2"> <input id="bayesian_formula_2" name="<?php echo self::ID; ?>[bayesian_formula]" type="radio" value="<?php echo self::BR2; ?>" <?php checked($bayesian_formula, self::BR2); ?> /> <code style="font-size: 14px;">((<strong>AV</strong> * <strong>R</strong>) + (<em>v</em> * <em>r</em>)) / (<strong>AV</strong> + <em>v</em>)</code> (<?php printf(__('from %s', self::ID), '<a href="https://gist.github.com/44522/" target="_blank">thebroth</a>'); ?>) </label> </p> <p> <label for="user_formula"> <input id="user_formula" name="<?php echo self::ID; ?>[bayesian_formula]" type="radio" value="0" <?php checked($bayesian_formula, 0); ?> /> <?php _e('I have my own formula:', self::ID); ?> <input <?php if(!current_user_can('edit_plugins')): ?>disabled="disabled"<?php endif; ?> type=text name="<?php echo self::ID; ?>[user_formula]" size="46" class="code" value="<?php echo $user_formula; ?>" /> </label> <a href="#" onclick="jQuery('#legend').toggle();">(<?php _e('Legend', self::ID); ?>)</a> </p> <div id="legend" style="display:none;"> <p> <code style="font-size: 14px;"><strong>AV</strong></code> = <?php _e('Global average number of votes per post', self::ID); ?> <br /> <code style="font-size: 14px;"><strong> V</strong></code> = <?php _e('Global number of votes (from all posts)', self::ID); ?> <br /> <code style="font-size: 14px;"><em> v</em></code> = <?php _e('Number of votes from the current post', self::ID); ?> <br /> <code style="font-size: 14px;"><strong> R</strong></code> = <?php printf(__('Global average rating per post (from 1 to %d)', self::ID), $max_rating); ?> <br /> <code style="font-size: 14px;"><em> r</em></code> = <?php printf(__('Average rating of the current post (from 1 to %d)', self::ID), $max_rating); ?> <br /> <code style="font-size: 14px;"><strong>MV</strong></code> = <?php printf(__('Minimum vote count per post to consider (%d by default)', self::ID), self::MIN_VOTES); ?> <br /> <code style="font-size: 14px;"><strong>MR</strong></code> = <?php printf(__('Maximum rating, see option above (currently %d)', self::ID), $max_rating); ?> </p> </div> </fieldset> </td> </tr> <tr valign="top"> <th scope="row"><?php _e('Allow ratings on', self::ID); ?></th> <td> <fieldset> <?php foreach(get_post_types(array('public' => true)) as $type): ?> <?php $object = get_post_type_object($type); ?> <label for="post_type_<?php echo $type; ?>"> <input type="checkbox" value="<?php echo $type; ?>" id="post_type_<?php echo $type; ?>" name="<?php echo self::ID; ?>[post_types][]" <?php checked(in_array($type, $post_types)); ?> /> <?php echo $object->labels->name; ?> </label> <br /> <?php endforeach; ?> </fieldset> </td> </tr> <tr valign="top"> <th scope="row"><?php _e('Locations of the rate links', self::ID); ?></th> <td> <fieldset> <label for="location_before_post"> <input id="location_before_post" name="<?php echo self::ID; ?>[before_post]" type="checkbox" <?php checked($before_post); ?> /> <?php _e('Before post content', self::ID); ?> </label> <br /> <label for="location_after_post"> <input id="location_after_post" name="<?php echo self::ID; ?>[after_post]" type="checkbox" <?php checked($after_post); ?> /> <?php _e('After post content ', self::ID); ?> </label> <br /> <br /> <label for="custom_filter"> <?php _e('I have my own action hook:', self::ID); ?> <input id="custom_filter" class="code" type="text" value="<?php echo $custom_filter; ?>" name="<?php echo self::ID; ?>[custom_filter]" size="40" /> </label> </fieldset> <p> <span class="description"><?php printf(__('You can also add it manually anywhere by using the %s shortcode', self::ID), '<code>[rate]</code>'); ?></span> </p> </td> </tr> <tr valign="top"> <th scope="row"><?php _e('Page visibility', self::ID); ?></th> <td> <fieldset> <?php foreach($generic_pages as $page => $label): ?> <label for="visibility_<?php echo $page; ?>"> <input type="checkbox" value="<?php echo $page; ?>" id="visibility_<?php echo $page; ?>" name="<?php echo self::ID; ?>[visibility][]" <?php checked(in_array($page, $visibility)); ?> /> <?php echo $label; ?> </label> <br /> <?php endforeach; ?> </fieldset> </td> </tr> <tr><td colspan="2"> </td></tr> <tr valign="top"> <th scope="row" colspan="2"> <input type="submit" class="button-primary" value="<?php _e('Save Changes', self::ID); ?>" /> <label for="remove_all"> <input id="remove_all" type="checkbox" value="1" name="<?php echo self::ID; ?>[remove_ratings]" /> <?php _e('Delete rating records from all posts', self::ID); ?> </label> </th> </tr> </table> </form> <div style="background:#eee;padding: 5px 10px;margin: 10px 5px;"> <?php printf(__('Found a bug, having a feature request or just looking for help on using this plugin? Then head on to the %s.', self::ID), '<a href="'.self::PROJECT_URI.'">'.__('Post Ratings support forums', self::ID).'</a>'); ?> </div> </div> <?php } /* * Javascript and CSS used by the plugin * * @since 1.0 */ public function assets(){ // js wp_enqueue_script('jquery'); wp_enqueue_script(self::ID, get_template_directory_uri() . '/plugins/post-ratings/post-ratings.js', array('jquery'), self::VERSION, true); // note that Atom-based themes alread have this variable "localized" if(!class_exists('Atom') || (class_exists('Atom') && (!defined('Atom::VERSION')))) wp_localize_script(self::ID, 'post_ratings', array('blog_url' => home_url('/'))); // allow themes to override css $style = is_readable(get_template_directory_uri() . '/plugins/post-ratings/post-ratings.css') ? get_template_directory_uri() . '/plugins/post-ratings/post-ratings.css' : get_template_directory_uri() . '/plugins/post-ratings/post-ratings.css'; wp_enqueue_style(self::ID, $style); } /* * Remove plugin options and rating stats on uninstall * * @since 1.0 */ public static function Uninstall(){ PostRatings()->DeleteRatingRecords(); delete_option(self::ID); } /* * Get user rating for a post * * @since 1.0 * @param int $post_id Post ID * @return array Rating, vote count and bayesian rating */ public function getRating($post_id){ $options = $this->getOptions(); extract($options); $rating = (float)get_post_meta($post_id, 'rating', true); $votes = (int)get_post_meta($post_id, 'votes', true); $bayesian_rating = 0; if($votes != 0){ $avg_num_votes = ($num_rated_posts != 0) ? ($num_votes / $num_rated_posts) : 0; $identifiers = array( 'AV' => $avg_num_votes, 'MV' => self::MIN_VOTES, 'MR' => $max_rating, 'V' => $num_votes, 'v' => $votes, 'R' => $avg_rating, 'r' => $rating, ); if(!$bayesian_formula) $bayesian_formula = $user_formula; if(!$bayesian_formula) $bayesian_formula = 'r'; $bayesian_formula = strtr($bayesian_formula, $identifiers); // safe eval - only super admins can set their own formula $bayesian_rating = (float)@eval("return ({$bayesian_formula});"); $bayesian_rating = 100 * ($bayesian_rating / $max_rating); } return compact('rating', 'votes', 'bayesian_rating'); } /* * Adjust user meta key name, or cookie key name for multisite blogs (except primary blog) * * @since 2.0 * @param string * @return string */ private function getRecordsKey($key){ if(is_multisite() && !is_main_site()) $key .= '_'.get_current_blog_id(); return $key; } /* * Attempt to get the visitor's IP address * * @since 2.3 * @return string */ private function getIP(){ if(isset($_SERVER['HTTP_CLIENT_IP'])) return $_SERVER['HTTP_CLIENT_IP']; if(isset($_SERVER['HTTP_X_FORWARDED_FOR'])) return $_SERVER['HTTP_X_FORWARDED_FOR']; if(isset($_SERVER['HTTP_X_FORWARDED'])) return $_SERVER['HTTP_X_FORWARDED']; if(isset($_SERVER['HTTP_FORWARDED_FOR'])) return $_SERVER['HTTP_FORWARDED_FOR']; if(isset($_SERVER['HTTP_FORWARDED'])) return $_SERVER['HTTP_FORWARDED']; return $_SERVER['REMOTE_ADDR']; } /* * Process rating, or set up plugin hooks if this is not a rate request * * @since 1.0 */ public function Run(){ $options = $this->getOptions(); extract($options); if(!isset($_GET['rate'])){ if($custom_filter) add_filter($custom_filter, array($this, 'ControlBlockHook')); if($before_post || $after_post){ // post content add_filter('the_content', array($this, 'ControlBlockHook'), 20); // bbpress add_filter('bbp_get_topic_content', array($this, 'ControlBlockHook')); add_filter('bbp_get_reply_content', array($this, 'ControlBlockHook')); } add_action('wp_enqueue_scripts', array($this, 'assets')); // this is our $.ajax request }else{ defined('DOING_AJAX') or define('DOING_AJAX', true); $post_id = (int)$_GET['post_id']; $voted = min(max((int)$_GET['rate'], 1), $max_rating); $error = ''; $post = &get_post($post_id); $rating = 0; $votes = 0; if(!$post){ $error = __("Invalid vote! Cheatin' uh?", self::ID); }else{ // get current post rating and vote count extract($this->getRating($post->ID)); // vote seems valid, register it if($this->currentUserCanRate($post_id)){ // increase global post rate count if this is the first vote if($votes < 1) $options['num_rated_posts']++; // global vote count $options['num_votes']++; // update post rating and vote count $votes++; $rating = (($rating * ($votes - 1)) + $voted) / $votes; update_post_meta($post->ID, 'rating', $rating); update_post_meta($post->ID, 'votes', $votes); // update global stats $options['avg_rating'] = ($options['num_votes'] > 0) ? ((($options['avg_rating'] * ($options['num_votes'] - 1)) + $voted) / $options['num_votes']) : 0; update_option(self::ID, $options); $ip_cache = get_transient('post_ratings_ip_cache'); if(!$ip_cache) $ip_cache = array(); $posts_rated = isset($_COOKIE[$this->getRecordsKey('posts_rated')]) ? explode('-', $_COOKIE[$this->getRecordsKey('posts_rated')]) : array(); $posts_rated = array_map('intval', array_filter($posts_rated)); // add user's IP to the cache $ip_cache[$post_id][] = $this->getIP(); // keep it light, only 10 records per post and maximum 10 post records (=> max. 100 ip entries) // also, the data gets deleted after 2 weeks if there's no activity during this time... if(count($ip_cache[$post_id]) > 10) array_shift($ip_cache[$post_id]); if(count($ip_cache) > 10) array_shift($ip_cache); set_transient('post_ratings_ip_cache', $ip_cache, 60 * 60 * 24 * 14); // update user meta if(is_user_logged_in()){ $user = wp_get_current_user(); $current_user_ratings = get_user_meta($user->ID, $this->getRecordsKey('posts_rated'), true); if(!$current_user_ratings) $current_user_ratings = array(); $posts_rated = array_unique(array_merge($posts_rated, array_filter($current_user_ratings))); update_user_meta($user->ID, $this->getRecordsKey('posts_rated'), $posts_rated); } // update cookie $posts_rated = array_slice($posts_rated, -20); // keep it under 20 entries $posts_rated[] = $post_id; setcookie($this->getRecordsKey('posts_rated'), implode('-', $posts_rated), time() + 60 * 60 * 24 * 90, '/'); // expires in 90 days $this->rated_posts[] = $post_id; do_action('rated_post', $post_id); $this->clearQueryCache(); }else{ $error = __('You cannot rate this post!', self::ID); } } // send updated info echo json_encode(array( 'error' => $error, 'rating' => sprintf('%.2F', $rating), 'max_rating' => $max_rating, 'votes' => $votes, 'html' => $this->getControl($post_id, true), )); exit; } } /* * Delete all ratings-related meta data from the database * * @since 1.0 */ public function DeleteRatingRecords(){ // clear cache, just in case we have a persistent cache plugin active wp_cache_flush(); delete_transient('post_ratings_ip_cache'); // remove all our meta entries delete_metadata('post', 0, 'rating', '', $delete_all = true); delete_metadata('post', 0, 'votes', '', $delete_all = true); delete_metadata('user', 0, $this->getRecordsKey('posts_rated'), '', $delete_all = true); // delete the current user's cookie too; this is probably useless because it only handles the current user; // we should store a unique ID on both the server and client computer // and if this ID doesn't match with the one on the user's computer then expire his cookie if(isset($_COOKIE[$this->getRecordsKey('posts_rated')])) setcookie($this->getRecordsKey('posts_rated'), null, -1, '/'); } /* * Hook for the content * * @since 1.8 * @param string $content * @return string */ public function ControlBlockHook($content = ''){ global $post, $wp_current_filter; $control = $this->getControl(); if($control){ $options = $this->getOptions(); extract($options); // no post ID? // this is most likely the user's action tag, fired in the wrong place... if(empty($post->ID)){ printf(__("Your '%s' action is must run in a post's context!", self::ID), $custom_filter); return $content; } // check if this is the right post type if(!in_array(get_post_type($post->ID), $post_types)) return $content; // we don't want to insert our html in excerpts... // see here why: http://digitalnature.eu/blog/2011/09/12/how-to-correctly-hook-your-filter-to-the-post-content if(array_intersect(array('get_the_excerpt', 'the_excerpt'), $wp_current_filter)) return $content; $continue = false; // this is the user's custom action, so directly output the HTML if(in_array($custom_filter, $wp_current_filter)){ echo $control; // the_content }elseif(array_intersect(array('the_content', 'bbp_get_reply_content'), $wp_current_filter)){ // we don't want to mess with custom loops if(in_the_loop()){ if($before_post) $content = $control.$content; if($after_post) $content = $content.$control; } } } return $content; } /* * The rate links * * @since 1.0 * @param int $post_id * @param bool $ignore_visibility_setting * @return string */ public function getControl($post_id = '', $ignore_visibility_setting = false){ global $post; $control = array(); $options = $this->getOptions(); $post_id = $post_id ? $post_id : $post->ID; extract($options); // check if this is the right post type if(!in_array(get_post_type($post_id), $post_types)) return false; if(empty($post_id)) throw new Exception('Need a post ID...'); $continue = false; if(!$ignore_visibility_setting){ // page visibility check foreach($visibility as $page) if(call_user_func("is_{$page}")) $continue = true; // cpt archive check if(in_array('archive', $visibility) && is_post_type_archive($post_types)) $continue = true; $continue = apply_filters('post_ratings_visibility', $continue); } if($continue || $ignore_visibility_setting){ // get current post rating extract($this->getRating($post_id)); $post = get_post($post_id); setup_postdata($post); $loaded = $this->loadTemplate('post-ratings-control', compact('rating', 'votes', 'bayesian_rating', 'max_rating')); wp_reset_postdata(); return $loaded; } return false; } /* * Checks if the current user can rate a post. * * @since 1.0 * @param int $post_id Optional, post ID to check (if not given, the global $post is used) * @return bool */ public function currentUserCanRate($post_id = false){ global $post; $post_id = $post_id ? $post_id : $post->ID; $can_rate = false; if(in_array($post_id, $this->rated_posts)) return false; // check if ratings are enabled for this post type if(in_array(get_post_type($post_id), $this->getOptions('post_types'))) // check if the user is logged in; if not, only continue if anonymouse voting is allowed if($this->getOptions('anonymous_vote') || is_user_logged_in()){ // last 100 IPs $ip_cache = get_transient('post_ratings_ip_cache'); // client cookie $posts_rated = isset($_COOKIE[$this->getRecordsKey('posts_rated')]) ? explode('-', $_COOKIE[$this->getRecordsKey('posts_rated')]) : array(); // also get user meta rating records if user is logged in if(is_user_logged_in()){ $user = wp_get_current_user(); $posts_rated = array_merge($posts_rated, (array)get_user_meta($user->ID, $this->getRecordsKey('posts_rated'), true)); } $can_rate = !((isset($ip_cache[$post_id]) && in_array($this->getIP(), $ip_cache[$post_id])) || in_array($post_id, $posts_rated)); } return apply_filters('post_ratings_access_check', $can_rate, $post_id); } /* * Get a list of most rated posts. * The results are returned as an array of objects * * @since 1.0 * @param array $args Arguments, see below * @return array */ public function getTopRated($args){ global $wpdb; $args = wp_parse_args($args, array( 'post_type' => 'post', 'number' => 10, 'offset' => 0, 'sortby' => 'bayesian_rating', // bayesian_rating, rating or votes 'order' => 'DESC', // ASC or DESC (no reason to use ASC...) 'date_limit' => 0, // date limit in days 'where' => '', 'bayesian_formula' => $this->getOptions('bayesian_formula'), )); $options = $this->getOptions(); extract($options); extract($args); // averge votes per post $avg_num_votes = ($num_rated_posts != 0) ? ($num_votes / $num_rated_posts) : 0; $where = $date_limit ? "AND post_date > '".date('Y-m-d', strtotime(sprintf('-%d days', $date_limit)))."'" : $where; if(empty($bayesian_formula)) $bayesian_formula = $user_formula; if(!$bayesian_formula) $bayesian_formula = 'r'; $identifiers = array( 'AV' => $avg_num_votes, 'MV' => self::MIN_VOTES, 'MR' => $max_rating, 'V' => $num_votes, 'v' => 'votes', 'R' => $avg_rating, 'r' => 'rating', ); $bayesian_formula = strtr($bayesian_formula, $identifiers); // many thanks for this SQL query to Utku Yıldırım :) // http://stackoverflow.com/questions/8214902/order-database-results-by-bayesian-rating/8215068#8215068 $query = " SELECT *, {$bayesian_formula} AS bayesian_rating FROM {$wpdb->posts} LEFT JOIN( SELECT DISTINCT post_id, (SELECT CAST(meta_value AS DECIMAL(10)) FROM {$wpdb->postmeta} WHERE {$wpdb->postmeta}.post_id = meta.post_id AND meta_key ='votes') AS votes, (SELECT CAST(meta_value AS DECIMAL(10,2)) FROM {$wpdb->postmeta} WHERE {$wpdb->postmeta}.post_id = meta.post_id AND meta_key ='rating') AS rating FROM {$wpdb->postmeta} meta ) AS newmeta ON {$wpdb->posts}.ID = newmeta.post_id WHERE post_status = 'publish' AND post_type = '{$post_type}' {$where} GROUP BY ID ORDER BY {$sortby} {$order} LIMIT {$offset}, {$number} "; // check cache first $key = md5($query); $cache = wp_cache_get('get_top_rated', self::ID); if(isset($cache[$key])){ $results = $cache[$key]; // no cache, do the db query... }else{ $results = $wpdb->get_results($query); $cache[$key] = $results; wp_cache_set('get_top_rated', $cache, self::ID); } return $results; } /* * Flushes cached queries. * * @since 1.9 */ public function clearQueryCache(){ wp_cache_delete('get_top_rated'); } /* * The [rate] shortcode * * @since 1.0 * @params array $atts Can accept the post ID as argument; if not given, control() will use the $post global * @return string */ public function Shortcode($atts){ $post_id = ''; // check if a post ID was given as first argument if(isset($atts[0]) && is_numeric($atts[0])) $post_id = (int)$atts[0]; // no, maybe it's the 2nd argument elseif(isset($atts[1]) && is_numeric($atts[1])) $post_id = (int)$atts[1]; // check if a "force" attribute is present $force = array_search('force', (array)$atts) !== false; return $this->getControl($post_id, $force); } /* * Register the "Top Rated" widget * * @since 1.0 */ public function Widget(){ require dirname(__FILE__).'/widget.php'; register_widget('PostRatingsWidget'); } } // a shortcut to our application function PostRatings(){ static $app; // first call to app() initializes the plugin if(!($app instanceof PostRatings)) $app = PostRatings::app(); return $app; } PostRatings(); // @todo add_filter('user_has_cap', 'post_ratings_has_cap', 10, 3); add_filter('map_meta_cap', 'post_ratings_map_cap_for_sa', 10, 4); function post_ratings_map_cap_for_sa($caps, $req_cap, $user_id, $args){ // $args[0] is the post ID if(($req_cap === 'rate') && is_multisite() && is_super_admin($user_id) && isset($args[0]) && !PostRatings()->currentUserCanRate($args[0])) $caps[] = 'do_not_allow'; return $caps; } function post_ratings_has_cap($allcaps, $caps, $args){ // $args[2] is the post ID if($args[0] !== 'rate' && !isset($args[2]) || !PostRatings()->currentUserCanRate($args[2])) return $allcaps; $allcaps['rate'] = 1; return $allcaps; }
/home/sudancam/.trash/wp-content/.././plugins /../post-ratings.1/post-ratings.php