Artikel als Widget

/* register custom widgets */
add_action('widgets_init', 'my_load_widgets');


/**
 * Registers the custom widgets.
 */
function my_load_widgets() {
  register_widget('My_Book_of_the_Month_Widget');
}


/**
 * Custom widget: Displays the latest Book of the Month posting.
 */
class My_Book_of_the_Month_Widget extends WP_Widget {
  
  /**
   * Constructor.
   */
  function My_Book_of_the_Month_Widget() {
    $widget_ops = array('classname' => 'widget_book_of_the_month', 'description' => 'Displays the latest Book of the Month posting.' );
    $this->WP_Widget('sd_book_of_the_month', 'Book of the Month', $widget_ops);
  }
  
  /**
   * Displays the widget.
   */
  function widget($args, $instance) {
    global $post;
    $category_to_load_from = 5;
    
    // start the widget
    extract($args);
    echo $before_widget;
    
    // get user selected settings
    $title = apply_filters('widget_title', $instance['title']);
    
    // get the latest 'book of the month' posting
    $temp_post = $post;
    $my_query = new WP_Query('cat=' . $category_to_load_from . '&showposts=1');
    // output the result if anything was found
    if ($my_query->have_posts()) {
      while ($my_query->have_posts()) : $my_query->the_post();
        echo $before_title . $title . $after_title;
        the_excerpt();
      endwhile;
    } /* end if posts for category */
    $post = $temp_post;
    
    // end the widget
    echo $after_widget;
  }
  
  /**
   * Saves the widget.
   */
  function update($new_instance, $old_instance) {
    $instance = $old_instance;
    $instance['title'] = strip_tags( $new_instance['title'] );
    return $instance;
  }
  
  /**
   * Displays the widget form in the backend.
   */
  function form($instance) {
    // set up some default widget settings
    $defaults = array('title' => 'Book of the Month');
    $instance = wp_parse_args((array) $instance, $defaults);
    
    // display the form
?>
    <p>
      <label for="<?php echo $this->get_field_id('title'); ?>">Title:</label>
      <input id="<?php echo $this->get_field_id('title'); ?>" name="<?php echo $this->get_field_name('title'); ?>" value="<?php echo $instance['title']; ?>" style="width: 100%;" />
    </p>
<?php
  }
  
} /* end Book of the Month widget */