使用WP_Widget class，我编码html布局以输出单个帖子元（标题，拇指，网址，作者头像和名称。
现在我需要输出由帖子ID定义的PHP中的元字符串：
public function widget( $args, $instance ) {
// outputs the content of the widget
echo __( '
<h4><a href="the_permalink">the_title</a></h4>
<img src="the_thumbnail">
<div>the_category</div>
.....
', 'text_domain' );
}
如果可能的话，将post id定义为输出admin：
上的选项表单public function form( $instance ) {
// outputs the options form on admin
}
答案 0 :(得分：3)
以下是我在本地网站上尝试的内容：
将此小部件保存在某处并将其包含在for(i=0;i<k;i++)：
functions.php在您添加上述代码后，将其添加到class PostInfoWidget extends WP_Widget
{
/**
* Constructor
*/
function __construct() {
parent::__construct('post-info-widget',
__('Display Post Information', 'text-domain'), [
'classname' => 'post-info-widget',
'description' => __('Use this widget to display a specific post information.')
]);
}
/**
* Display front-end contents.
*/
function widget($args, $instance)
{
$post = get_post($instance['post_id']);
echo $args['before_widget'];
if ( !empty($instance['widget_title']) ) {
echo $args['before_title'] . $instance['widget_title'] . $args['after_title'];
}
?>
<article class="post post-sidebar" itemscope itemtype="https://schema.org/Article">
<?= get_the_post_thumbnail($post, 'thumbnail', ['itemprop' => 'thumbnail']) ?>
<h4 itemprop="name">
<a itemprop="url" href="<?= esc_url( get_permalink($post) ) ?>">
<?= get_the_title($post) ?>
</a>
</h4>
<div class="author-info">
<span class="author-name">
<?php the_author_meta('display_name', $post->post_author) ?>
</span>
<span class="author-avatar">
<?= get_avatar($post->post_author) ?>
</span>
</div>
<div class="category-info">
<?php the_category(', ', '', $instance['post_id']) ?>
</div>
</article>
<?php
echo $args['after_widget'];
}
/**
* Display back-end form.
*/
function form($instance)
{
$widget_title = !empty($instance['widget_title']) ? $instance['widget_title'] : '';
$post_id = !empty($instance['post_id']) ? $instance['post_id'] : 1;
?>
<p>
<label for="<?= $this->get_field_id('widget_title') ?>">
<?= __('Title of the widget:', 'text-domain') ?>
</label>
<input class="widefat" type="text" name="<?= $this->get_field_name('widget_title') ?>" value="<?= $widget_title ?>">
</p>
<p>
<label for="<?= $this->get_field_id('post_id') ?>">
<?= __('Displaying infomation of post ID:', 'text-domain') ?>
</label>
<input type="number" name="<?= $this->get_field_name('post_id') ?>" value="<?= $post_id ?>">
</p>
<?php
}
/**
* Save back-end form.
*/
function update($new_instance, $old_instance)
{
$instance = [];
$instance['widget_title'] = sanitize_text_field($new_instance['widget_title']);
$instance['post_id'] = absint($new_instance['post_id']);
return $instance;
}
}
。
functions.php将此代码添加到add_action('widgets_init', function() {
register_widget('PostInfoWidget');
});
：
functions.php将此代码添加到您的register_sidebar([
'name' => __('Post infomation sidebar', 'text-domain'),
'id' => 'post-info-sidebar',
'description' => __('Use this sidebar to display a specific post information.', 'text-domain'),
'before_widget' => '<aside id="%1$s" class="widget %2$s" itemscope itemtype="https://schema.org/WPSideBar">',
'after_widget' => '</aside>',
'before_title' => '<h2 class="widget-title">',
'after_title' => '</h2>'
]);
或您想要的任何模板中：
sidebar.php现在，尝试一下并根据您的喜好进行自定义。
答案 1 :(得分：1)
如果我理解正确，您想使用the loop？
<?php
public function widget( $args, $instance ) {
$r = new WP_Query([
'posts_per_page' => 10,
'no_found_rows' => true,
'post_status' => 'publish',
'ignore_sticky_posts' => true
]);
if ($r->have_posts()) {
echo "<ul>";
while ($r->have_posts()) {
$r->the_post();
$permalink = get_the_permalink();
$title = get_the_title();
$id = get_the_ID();
$thumbnail = has_post_thumbnail() ? get_the_post_thumbnail() : "";
$category = has_category() ? implode(",", get_the_category()) : "";
echo "<h4><a href='$permalink'>$title</a></h4>";
echo $thumbnail;
echo "<div>$category</div>";
}
}
}