Visualizzare articoli aggiornati nel widget

Ciao a tutti ; ho la necessità di visualizzare gli articoli aggiornati ma soltanto di una specifica categoria , ho trovato un plugin però visualizza tutte le attività svolte sul blog , pensavo se qualcuno saprebbe modificare il plugin in modo da mostrare solo gli articoli della categoria che interessa mostrare

<?php
/*
Plugin Name: Recently updated pages and posts
Plugin URI: http://www.tacticaltechnique.com/wordpress/wordpress-recently-updated-pages-or-posts/
Description: Creates a sidebar widget that displays a list of links to recently updated pages and posts.
Author: Corey Salzano
Version: 0.120223
Author URI: http://www.tacticaltechnique.com/
*/

//    please send your code changes upstream to me


class recently_updated_widget extends WP_Widget {

    function recently_updated_widget() {
        // widget actual processes
        parent::WP_Widget( /* Base ID */'recently_updated_widget', /* Name */'Recent updates', array( 'description' => 'Recently updated pages and posts' ) );
    }

    function form($instance) {
        // outputs the options form on admin

        // format options as valid html
        $title = htmlspecialchars($instance['title'], ENT_QUOTES);
        $post_count = htmlspecialchars($instance['post_count'], ENT_QUOTES);
        $word_count = htmlspecialchars($instance['word_count'], ENT_QUOTES);
    ?>
        <p>
        <label for="<?php echo $this->get_field_id('title'); ?>" style="line-height:35px;display:block;">Title: <input type="text" size="20" id="<?php echo $this->get_field_id('title'); ?>" name="<?php echo $this->get_field_name('title'); ?>" value="<?php echo $title; ?>" /></label>
        <label for="<?php echo $this->get_field_id('post_count'); ?>" style="line-height:35px;display:block;">Show <input type="text" size="2" id="<?php echo $this->get_field_id('post_count'); ?>" name="<?php echo $this->get_field_name('post_count'); ?>" value="<?php echo $post_count; ?>" /> items</label>
        <label for="<?php echo $this->get_field_id('word_count'); ?>" style="line-height:35px;display:block;">Excerpt length: <input type="text" size="2" id="<?php echo $this->get_field_id('word_count'); ?>" name="<?php echo $this->get_field_name('word_count'); ?>" value="<?php echo $word_count; ?>" /> words</label>
        </p>
    <?php
    }

    function update($new_instance, $old_instance) {
        // processes widget options to be saved
        $instance = $old_instance;
        $instance['title'] = strip_tags(stripslashes( $new_instance['title'] ));
        $instance['post_count'] = $new_instance['post_count'];
        $instance['word_count'] = $new_instance['word_count'];
        return $instance;
    }

    function widget($args, $instance) {
        // outputs the content of the widget
        extract($args, EXTR_SKIP);

        $title = empty($instance['title']) ? '&nbsp;' : apply_filters('widget_title', $instance['title']);
        $post_count = $instance['post_count'];
        $word_count = $instance['word_count'];
        $today = current_time('mysql', 1);
        global $wpdb;

        if ( $recentposts = $wpdb->get_results("SELECT ID, post_title, post_date, post_content FROM $wpdb->posts WHERE post_status = 'publish' AND post_modified_gmt < '$today' ORDER BY post_modified_gmt DESC LIMIT $post_count")){
            echo $before_widget;
            if ( !empty( $title ) ) { echo $before_title . $title . $after_title; };
    ?>
            <ul id="recently-updated-widget-list">
        <?php
                $i = 0;
                foreach ($recentposts as $post) {
                    if ($post->post_title == '') $post->post_title = sprintf(__('Post #%s'), $post->ID);
                    $the_excerpt = wp_trim_words( strip_tags( apply_filters( 'the_content', $post->post_content )), $word_count, "..." );
                    echo "<li class=\"recently-updated-widget-item\" id=\"ruwi-" . $i . "\"><a href='".get_permalink($post->ID)."'>" . $post->post_title . "</a>";
                    if( $word_count > 0 ){
                        echo "<p id=\"rup-excerpt\">" . $the_excerpt . "</p>";
                    }
                    echo "</li>";
                    $i++;
                } ?>
            </ul>

<?php         echo $after_widget;
        }
    }
}
if( !function_exists('register_recently_updated_widget')){
    add_action('widgets_init', 'register_recently_updated_widget');
    function register_recently_updated_widget() {
        register_widget('recently_updated_widget');
    }
}

?>

vedendo il codice, andrebbe riscritto usando le funzioni di wordpress e non delle query dirette sul database. Se leggi qui http://codex.wordpress.org/Class_Reference/WP_Query ricavare i post di una categoria, ordinati da quello modificato più recentemente, non è difficile.

ok grazie ci proverò