ID; $widget_title = ''; $widget_tags = ''; if ($post_id > 0) { $posts_by_tag_page_fields = get_post_meta($post_id, 'posts_by_tag_page_fields', TRUE); if (isset($posts_by_tag_page_fields) && is_array($posts_by_tag_page_fields)) { $widget_title = $posts_by_tag_page_fields['widget_title']; $widget_tags = $posts_by_tag_page_fields['widget_tags']; } } // Use nonce for verification ?>


$attributes */ function shortcode_handler($attributes) { extract(shortcode_atts(array( "tags" => '', // comma Separated list of tags "number" => '5', "exclude" => FALSE, "exclude_current_post" => FALSE, "excerpt" => FALSE, "content" => FALSE, 'thumbnail' => FALSE, 'order_by' => 'date', 'order' => 'desc', 'author' => FALSE, 'date' => FALSE, 'tag_links' => FALSE ), $attributes)); if (strtolower($exclude) == "false") { $exclude = FALSE; } if (strtolower($exclude_current_post) == "false") { $exclude_current_post = FALSE; } if (strtolower($excerpt) == "false") { $excerpt = FALSE; } if (strtolower($thumbnail) == "false") { $thumbnail = FALSE; } if (strtolower($author) == "false") { $author = FALSE; } if (strtolower($date) == "false") { $date = FALSE; } if (strtolower($content) == "false") { $content = FALSE; } if (strtolower($tag_links) == "false") { $tag_links = FALSE; } // call the template function $output = get_posts_by_tag($tags, $number, $exclude, $excerpt, $thumbnail, $order_by, $order, $author, $date, $content, $exclude_current_post); if ($tag_links && !$exclude) { $output .= get_tag_more_links($tags); } return $output; } // PHP4 compatibility function PostsByTag() { $this->__construct(); } } // Start this plugin once all other plugins are fully loaded add_action( 'init', 'PostsByTag' ); function PostsByTag() { global $PostsByTag; $PostsByTag = new PostsByTag(); } // register TagWidget widget add_action('widgets_init', create_function('', 'return register_widget("TagWidget");')); /** * TagWidget Class */ class TagWidget extends WP_Widget { /** constructor */ function TagWidget() { /* Widget settings. */ $widget_ops = array( 'classname' => 'TagWidget', 'description' => __('Widget that shows posts from a set of tags', 'posts-by-tag')); /* Widget control settings. */ $control_ops = array('id_base' => 'tag-widget' ); /* Create the widget. */ parent::WP_Widget( 'tag-widget', __('Posts By Tag', 'posts-by-tag'), $widget_ops, $control_ops ); } /** @see WP_Widget::widget */ function widget($args, $instance) { global $post; extract( $args ); $tags = $instance['tags']; $current_tags = (bool) $instance['current_tags']; $current_page_tags = (bool) $instance['current_page_tags']; $number = $instance['number']; // Number of posts to show. $exclude = (bool) $instance['exclude']; $exclude_current_post = (bool) $instance['exclude_current_post']; $excerpt = (bool) $instance['excerpt']; $content = (bool) $instance['content']; $thumbnail = (bool) $instance['thumbnail']; $order_by = $instance['order_by']; $order = $instance['order']; $author = (bool) $instance['author']; $date = (bool) $instance['date']; $tag_links = (bool) $instance['tag_links']; $title = $instance['title']; $post_id = $post->ID; if ($current_tags) { // if current tags is enabled then set tags to empty $tags = ''; } if ($current_page_tags) { $tags = ''; // reset the tags // get tags and title from page custom fields if ($post_id > 0) { $posts_by_tag_page_fields = get_post_meta($post_id, 'posts_by_tag_page_fields', TRUE); if (isset($posts_by_tag_page_fields) && is_array($posts_by_tag_page_fields)) { if ($posts_by_tag_page_fields['widget_title'] != '') { $title = $posts_by_tag_page_fields['widget_title']; } if ($posts_by_tag_page_fields['widget_tags'] != '') { $tags = $posts_by_tag_page_fields['widget_tags']; } } } } if (($current_tags || $current_page_tags) && !is_singular()) { // either current post tags or page custom tags is enabled and it is not a singular page $widget_content = ''; } else { if ($current_page_tags && $tags == '') { $widget_content = ''; } else { if (($current_tags || $current_page_tags) && is_singular() && $post_id > 0) { $key = "posts-by-tag-$widget_id-$post_id"; } else { $key = "posts-by-tag-$widget_id"; } if ( false === ( $widget_content = get_transient( $key ) ) ) { $widget_content = get_posts_by_tag($tags, $number, $exclude, $excerpt, $thumbnail, $order_by, $order, $author, $date, $content, $exclude_current_post); // store in cache set_transient($key, $widget_content, 86400); // 60*60*24 - 1 Day } } } if ($widget_content != '') { echo $before_widget; echo $before_title; echo $title; echo $after_title; echo $widget_content; if ($tag_links && !$exclude) { echo get_tag_more_links($tags); } echo $after_widget; } } /** @see WP_Widget::update */ function update($new_instance, $old_instance) { $instance = $old_instance; // validate data $instance['title'] = strip_tags($new_instance['title']); $instance['tags'] = strip_tags($new_instance['tags']); $instance['current_tags'] = (bool)$new_instance['current_tags']; $instance['current_page_tags'] = (bool)$new_instance['current_page_tags']; $instance['number'] = intval($new_instance['number']); $instance['exclude'] = (bool)$new_instance['exclude']; $instance['exclude_current_post'] = (bool)$new_instance['exclude_current_post']; $instance['thumbnail'] = (bool)$new_instance['thumbnail']; $instance['author'] = (bool)$new_instance['author']; $instance['date'] = (bool)$new_instance['date']; $instance['excerpt'] = (bool)$new_instance['excerpt']; $instance['content'] = (bool)$new_instance['content']; $instance['order'] = ($new_instance['order'] === 'asc') ? 'asc' : 'desc'; $instance['order_by'] = ($new_instance['order_by'] === 'date') ? 'date' : 'title'; $instance['tag_links'] = (bool)$new_instance['tag_links']; return $instance; } /** @see WP_Widget::form */ function form($instance) { /* Set up some default widget settings. */ $defaults = array( 'title' => '', 'tags' => '', 'current_tags' => FALSE, 'number' => '5', 'exclude' => FALSE, 'exclude_current_post' => FALSE, 'thumbnail' => FALSE, 'author' => FALSE, 'date' => FALSE, 'excerpt' => FALSE, 'content' => FALSE); $instance = wp_parse_args( (array) $instance, $defaults ); $title = esc_attr($instance['title']); $tags = $instance['tags']; $number = intval($instance['number']); $current_tags = (bool) $instance['current_tags']; $current_page_tags = (bool) $instance['current_page_tags']; $exclude = (bool) $instance['exclude']; $exclude_current_post = (bool) $instance['exclude_current_post']; $thumbnail = (bool) $instance['thumbnail']; $author = (bool) $instance['author']; $date = (bool) $instance['date']; $excerpt = (bool) $instance['excerpt']; $content = (bool) $instance['content']; $order = ( strtolower( $instance['order'] ) === 'asc' ) ? 'asc' : 'desc'; $order_by = ( strtolower( $instance['order_by'] ) === 'date' ) ? 'date' : 'title'; $tag_links = (bool) $instance['tag_links']; ?>


$tags * @param $number Number of posts to show * @param $exclude Whether to exclude the tags specified. Default is FALSE * @param $excerpt * @param $thumbnail * @param $order_by (title, date) defaults to 'date' * @param $order (asc, desc) defaults to 'desc' * @param $author - Whether to show the author name or not * @param $date - Whether to show the post date or not * @param $content * @param $exclude_current_post Whether to exclude the current post/page. Default is FALSE * @param $tag_links Whether to display tag links at the end */ function posts_by_tag($tags, $number, $exclude = FALSE, $excerpt = FALSE, $thumbnail = FALSE, $order_by = 'date', $order = 'desc', $author = FALSE, $date = FALSE, $content = FALSE, $exclude_current_post = FALSE, $tag_links = FALSE) { $output = get_posts_by_tag($tags, $number, $exclude, $excerpt, $thumbnail, $order_by, $order, $author, $date, $content, $exclude_current_post); if ($tag_links && !$exclude) { $output .= get_tag_more_links($tags); } echo $output; } /** * Helper function for posts_by_tag * * @param $tags * @param $number Number of posts to show * @param $exclude Whether to exclude the tags specified. Default is FALSE * @param $excerpt * @param $thumbnail * @param $order_by (title, date) defaults to 'date' * @param $order (asc, desc) defaults to 'desc' * @param $author - Whether to show the author name or not * @param $date - Whether to show the post date or not * @param $content - Whether to show post content or not * @param $exclude_current_post Whether to exclude the current post/page. Default is FALSE */ function get_posts_by_tag($tags, $number, $exclude = FALSE, $excerpt = FALSE, $thumbnail = FALSE, $order_by = 'date', $order = 'desc', $author = FALSE, $date = FALSE, $content = FALSE, $exclude_current_post = FALSE) { global $wp_query; $current_post_id = $wp_query->post->ID; $output = ''; $tag_id_array = array(); if ($tags == '') { // if tags is empty then take from current posts if (is_single()) { $tag_array = wp_get_post_tags($current_post_id); foreach ($tag_array as $tag) { $tag_id_array[] = $tag->term_id; } } } else { // Get array of post info. $tag_array = explode(",", $tags); foreach ($tag_array as $tag) { $tag_id_array[] = get_tag_ID(trim($tag)); } } if (count($tag_id_array) > 0) { // only if we have atleast one tag. get_posts has a bug. If empty array is passed, it returns all posts. That's why we need this condition $tag_arg = 'tag__in'; if ($exclude) { $tag_arg = 'tag__not_in'; } // saving the query $temp_query = clone $wp_query; // TODO: Need to cache this. $tag_posts = get_posts( array( 'numberposts' => $number, $tag_arg => $tag_id_array, 'order_by' => $order_by, 'order' => $order ) ); // restoring the query so it can be later used to display our posts $wp_query = clone $temp_query; if (count($tag_posts) > 0) { $output = '
    '; foreach($tag_posts as $post) { if ($exclude_current_post && $current_post_id == $post->ID) { // exclude currrent post/page continue; } setup_postdata($post); $output .= '
  • '; if ($thumbnail) { if (has_post_thumbnail($post->ID)) { $output .= get_the_post_thumbnail($post->ID, 'thumbnail'); } else { if (get_post_meta($post->ID, 'post_thumbnail', true) != '') { $output .= '' . get_the_title($post->ID) . ''; } } } $output .= '' . $post->post_title . ''; if($content) { $output .= get_the_content_with_formatting(); } if ($author) { $output .= ' ' . __('Posted by: ', 'posts-by-tag'); $output .= get_the_author_meta('display_name', $post->post_author) . ''; } if ($date) { $output .= ' ' . __('Posted on: ', 'posts-by-tag'); $output .= mysql2date(get_option('date_format'), $post->post_date) . ''; } if( $excerpt ) { $output .= '
    '; if ($post->post_excerpt!=NULL) $output .= apply_filters('the_excerpt', $post->post_excerpt); else $output .= get_the_excerpt(); } $output .= '
    • '; } $output .= '
'; } } return $output; } /** * Get tag more links for a bunch of tags. Exposed as a template function * * @param $tags * @param $prefix */ function get_tag_more_links($tags, $prefix = 'More posts: ') { global $wp_query; $tag_array = array(); $output = ''; if ($tags == '') { // if tags is empty then take from current posts if (is_single()) { $tag_array = wp_get_post_tags($wp_query->post->ID); } } else { $tag_array = explode(",", $tags); } if (count($tag_array) > 0) { $output = '

' . $prefix; foreach ($tag_array as $tag) { $tag_name = $tag; if (is_object($tag)) { $tag_name = $tag->name; } $output .= get_tag_more_link($tag_name); } $output .= '

'; } return $output; } /** * Get tag more link for a single tag * * @param $tag * @return */ function get_tag_more_link($tag) { return '' . $tag . ' '; } /** * get tag id from tag name * * @param $tag_name * @return term id. 0 if not found */ if (!function_exists("get_tag_ID")) { function get_tag_ID($tag_name) { $tag = get_term_by('name', $tag_name, 'post_tag'); if ($tag) { return $tag->term_id; } else { return 0; } } } /** * Get the content of a post with formatting. * Calls the filter before returning the content * */ function get_the_content_with_formatting ($more_link_text = '(more...)', $stripteaser = 0, $more_file = '') { $content = get_the_content($more_link_text, $stripteaser, $more_file); $content = apply_filters('the_content', $content); $content = str_replace(']]>', ']]>', $content); return $content; } ?>