我正在为我们的网站编写自定义小部件,以显示一些选定的帖子。在管理员部分,我有一个多重选择框,让管理员通过名称选择多个帖子。这个工作得很好,但是当我选择几个不同的帖子并保存时,什么也没有被保存下来。
有人可以解释一下吗?
下面是我的代码...
有人可以解释一下吗?
下面是我的代码...
<?php
/*
Plugin Name: Hot Topics
Plugin URI: http://www.weddingideasmag.com
Description: Use this widget to choose an array of posts snippets to show
Version: 1.0)
Author: James Payne
Author URI: http://www.bluntcreative.co.uk
License: GPL2
*/
class HotTopics extends WP_Widget {
// constructor
function HotTopics() {
$widget_ops = array( 'name' => 'Hot Topics','classname' => 'widget-hot-topics', 'description' => __( "Use this widget to choose an array of posts snippets to show in the sidebar." ) );
$this->WP_Widget( 'hottopics', __('Hot Topics'), $widget_ops);
}
// widget form creation
function form($instance) {
// Check values
if( $instance) {
$select = esc_attr($instance['select']); // Added
} else {
$select ='';
}
?>
<select multiple="multiple" name="<?php echo $this->get_field_name('select'); ?>[]" id="<?php echo $this->get_field_id('select'); ?>" class="widefat" size="15" style="margin-bottom:15px;">
<?php
$args = array( 'offset'=> 1, 'orderby' => 'date', 'order' => 'DESC', 'posts_per_page' => 200, 'post_status' => 'publish' );
// The Query
query_posts( $args );
// The Loop
while ( have_posts() ) : the_post();
$title = get_the_title();
?>
<option value="<?php echo get_the_ID();?>" class="hot-topic" <?php $select == $title ? ' selected="selected"' : '';?> style="margin-bottom:3px;">
<?php echo $title;?>
</option>
<?php
endwhile;
// Reset Query
wp_reset_query();
?>
</select>
<?php
}
// update widget
function update($new_instance, $old_instance) {
$instance = $old_instance;
// Fields
$instance['select'] = strip_tags($new_instance['select']);
return $instance;
}
// widget display
function widget($args, $instance) {
/* ... */
echo 'tetst';
}
}
// register widget
add_action('widgets_init', create_function('', 'return register_widget("HotTopics");'));
?>