要从帖子类型获取帖子，可以使用get_posts()
$posts = get_posts(
array (
\'numberposts\' => -1,
\'posts_per_page\' => -1,
\'post_type\' => \'store\'
)
);
请注意
-1 很危险：如果有数百万家商店，查询可能会超时。
下面是这样一个元框的一个非常基本的示例。您将在我们的标签中找到更多的示例和解释metabox.
<?php # -*- coding: utf-8 -*-
/* Plugin Name: Store metabox */
add_action( \'add_meta_boxes_post\', \'wpse_98184_register_store_metabox\' );
add_action( \'save_post\', \'wpse_98184_save_store_metabox\' );
function wpse_98184_register_store_metabox()
{
add_meta_box( \'post_store\', \'Store\', \'wpse_98184_render_store_metabox\', NULL, \'side\' );
}
function wpse_98184_render_store_metabox( $object, $box )
{
$nonce = wp_create_nonce( __FILE__ );
echo "<input type=\'hidden\' name=\'nonce_store_mbox\' value=\'$nonce\' />";
$posts = get_posts(
array (
\'numberposts\' => -1,
\'posts_per_page\' => -1,
\'post_type\' => \'store\',
)
);
if ( ! $posts )
return print \'No store found\';
$meta = get_post_meta( $object->ID, \'_store\', TRUE );
$selected = $meta ? $meta : 0;
$html = \'<select name="_store"><option value="0">Select a store</option>\';
foreach ( $posts as $post )
$html .= sprintf(
\'<option value="%1$d" %2$s>%3$s</option>\',
esc_attr( $post->ID ),
selected( $post->ID, $selected, FALSE ),
esc_html( $post->post_title )
);
$html .= \'</select>\';
echo $html;
}
function wpse_98184_save_store_metabox( $id )
{
if ( defined( \'DOING_AJAX\' ) && DOING_AJAX )
return;
if ( ! isset ( $_POST[ \'nonce_store_mbox\' ] ) )
return;
if ( ! wp_verify_nonce( $_POST[ \'nonce_store_mbox\' ], __FILE__ ) )
return;
if ( ! current_user_can( \'edit_post\', $id ) )
return;
if ( ! isset ( $_POST[\'_store\'] ) )
return delete_post_meta( $id, \'_store\' );
update_post_meta( $id, \'_store\', $_POST[\'_store\'] );
}
要在存储页面中列出所有这些关联的帖子，请使用查询帖子元字段的函数：
function wpse_98184_list_store_posts()
{
$args = array(
\'post_type\' => \'post\',
\'numberposts\' => -1,
\'posts_per_page\' => -1,
\'meta_query\' => array (
array (
\'key\' => \'_store\',
\'value\' => get_the_ID(),
\'compare\' => \'==\',
),
)
);
$posts = get_posts( $args );
if ( ! $posts )
return \'\';
$output = \'<ul class="store-posts">\';
foreach ( $posts as $post )
$output .= sprintf(
\'<li><a href="%1$s">%2$s</a></li>\',
get_permalink( $post->ID ),
esc_html( get_the_title( $post->ID ) )
);
$output .= \'</ul>\';
return $output;
}
您可以将此函数用作短代码处理程序：
add_shortcode( \'storeposts\', \'wpse_98184_list_store_posts\' );
然后只需添加
[storeposts] 无论您在商店的什么地方需要该列表。
