Answers:
GitHub上的Dave James Miller为我钉上了这个。这些工作都不是我的,我只是将他的代码包装在一个企鹅中,因为它的广告效果很好:
<?php
/**
* Plugin Name: Set default category from url parameter
* Plugin URI: https://gist.github.com/davejamesmiller/1966543
* Description: enables you to setup new post links with the post_title, category and tags in the url: <code><a href="<?= esc_attr(admin_url('post-new.php?post_title=Default+title&category=category1&tags=tag1,tag2')) ?>">New post</a></code>
* Version: 0.0.1
* Author: davejamesmiller
* Author URI: https://gist.github.com/davejamesmiller
*/
// I used this code to automatically set the default post title, category and
// tags for a new WordPress post based on which link was clicked. It could also
// be tweaked to hard-code the values instead of using request parameters.
add_filter('wp_get_object_terms', function($terms, $object_ids, $taxonomies, $args)
{
if (!$terms && basename($_SERVER['PHP_SELF']) == 'post-new.php') {
// Category - note: only 1 category is supported currently
if ($taxonomies == "'category'" && isset($_REQUEST['category'])) {
$id = get_cat_id($_REQUEST['category']);
if ($id) {
return array($id);
}
}
// Tags
if ($taxonomies == "'post_tag'" && isset($_REQUEST['tags'])) {
$tags = $_REQUEST['tags'];
$tags = is_array($tags) ? $tags : explode( ',', trim($tags, " \n\t\r\0\x0B,") );
$term_ids = array();
foreach ($tags as $term) {
if ( !$term_info = term_exists($term, 'post_tag') ) {
// Skip if a non-existent term ID is passed.
if ( is_int($term) )
continue;
$term_info = wp_insert_term($term, 'post_tag');
}
$term_ids[] = $term_info['term_id'];
}
return $term_ids;
}
}
return $terms;
}, 10, 4);
进入wp_insert_post
,测试的发布状态auto-draft
,以及GET
参数的URL 。
但是首先我们需要一个辅助函数来获取和清除GET
参数:
/**
* Set default category.
*
* @wp-hook pre_option_default_category
* @return string Category slug
*/
function t5_get_default_cat_by_url()
{
if ( ! isset( $_GET['post_cat'] ) )
return FALSE;
return array_map( 'sanitize_title', explode( ',', $_GET['post_cat'] ) );
}
现在,自动草稿处理程序:
add_action( 'wp_insert_post', 't5_draft_category', 10, 2 );
/**
* Add category by URL parameter to auto-drafts.
*
* @wp-hook wp_insert_post
* @param int $post_ID
* @param object $post
* @return WP_Error|array An error object or term ID array.
*/
function t5_draft_category( $post_ID, $post )
{
if ( ! $cat = t5_get_default_cat_by_url()
or 'auto-draft' !== $post->post_status )
return;
// return value will be used in unit tests only.
return wp_set_object_terms( $post_ID, $cat, 'category' );
}
仅当get_default_post_to_edit()
第二个参数$create_in_db
设置为时才有效TRUE
。要捕获其他情况,您必须过滤选项default_category
:
add_filter( 'pre_option_default_category', 't5_get_default_cat_by_url' );
现在,您可以使用参数post_cat
传递以逗号分隔的类别段列表:
也可以看看:
我认为您可以使用默认选项default_category
并对它进行过滤option_default_category
(如果url中有类别的参数,例如本示例源)。将其用作插件,对其进行测试。从头开始写,未经测试。
url参数是post_cat
,您可以设置类别,例如以下url:
/wp-admin/post-new.php?post_cat=categoryname
<?php
/**
* Plugin Name: .my Test
* Plugin URI: http://bueltge.de/
* Description:
* Version: 0.0.1
* Author: Frank Bültge
* Author URI: http://bueltge.de/
*/
class Set_Default_Cat_From_Url_Param {
protected static $classobj = NULL;
public static function init() {
NULL === self::$classobj and self::$classobj = new self();
return self::$classobj;
}
function __construct() {
if ( isset( $_GET['post_cat'] ) )
add_filter( 'option_default_category', array( $this, 'get_category' ) );
}
function get_category( $category ) {
if ( isset( $_GET['post_cat'] ) )
$category = get_cat_ID( esc_attr( $_GET['post_cat'] ) );
return $category;
}
}
add_action( 'load-post-new.php', array( 'Set_Default_Cat_From_Url_Param', 'init' ) );
我知道已经解决了这个问题,但是我想补充一点。我在这里将其添加到要点中https://gist.github.com/malcalevak/ba05b4fbed0c6e33ac8c18c1451bd857
但是,为节省您的麻烦,下面是代码:
function set_category () {
global $post;
//Check for a category parameter in our URL, and sanitize it as a string
$category_slug = filter_input(INPUT_GET, 'category', FILTER_SANITIZE_STRING, array("options" => array("default" => 0)));
//If we've got a category by that name, set the post terms for it
if ( $category = get_category_by_slug($category_slug) ) {
wp_set_post_terms( $post->ID, array($category->term_id), 'category' );
}
}
//hook it into our post-new.php specific action hook
add_action( 'admin_head-post-new.php', 'set_category', 10, 1 );
与所有其他类似,您可以通过/wp-admin/post-new.php?category=categoryname触发它
仅供参考,如果您使用的是高级自定义字段(例如@Aphire),则可以使用。