Question

我的目标是使用某种类型的默认方法来检查Wordpress中是否存在类别，如果不存在，则添加类别。与标签相同。

这是我试图实现它的一团糟：

<?php 
    if (is_term('football', 'category')) {
    } 
    else (
        $new_cat = array('cat_name' => 'Football', 'category_description' => 'Football Blogs', 'category_nicename' => 'category-slug', 'category_parent' => 'sports');
        $my_cat_id = wp_insert_category($new_cat);
    )

我计划将其添加为插件。任何想法或帮助都会很棒！

Answer 1

你可以跑;

wp_insert_term('football', 'category', array(
    'description' => 'Football Blogs',
    'slug' => 'category-slug',
    'parent' => 4 // must be the ID, not name
));

如果该分类已存在，该函数将不会添加该术语！

出于兴趣，您何时会在插件中调用此类代码？确保在激活钩子函数中注册它，否则它将在每次加载时运行！

更新

要通过slug获取术语的ID，请使用;

$term_ID = 0;
if ($term = get_term_by('slug', 'term_slug_name', 'taxonomy'))
    $term_ID = $term->term_id;

将“分类法”替换为术语的分类 - 在您的情况下，“类别”。

Answer 2

以下是分配和创建类别（如果不存在）的方法

$pid = 168; // post we will set it's categories
$cat_name = 'lova'; // category name we want to assign the post to 
$taxonomy = 'category'; // category by default for posts for other custom post types like woo-commerce it is product_cat
$append = true ;// true means it will add the cateogry beside already set categories. false will overwrite

//get the category to check if exists
$cat  = get_term_by('name', $cat_name , $taxonomy);

//check existence
if($cat == false){

    //cateogry not exist create it 
    $cat = wp_insert_term($cat_name, $taxonomy);

    //category id of inserted cat
    $cat_id = $cat['term_id'] ;

}else{

    //category already exists let's get it's id
    $cat_id = $cat->term_id ;
}

//setting post category 
$res=wp_set_post_terms($pid,array($cat_id),$taxonomy ,$append);

var_dump( $res );

Answer 3

您好，如果该类别不存在，您也可以使用这个

//Get the categories names for every post in archive page using 'get_the_terms( ID, 'taxnomoy')'.
// Write your HTML Code/term name that you want to show if the category/term does not exist for the CPT (Custom Post Type) post

<?php $categories_name  = get_the_terms( $post->ID, "postino-happening-state" );

if( $categories_name == false ) :  // if caterory/term not exist ?>
// Write something...
<?php else: // if category exist ?>
// Write something...
<?php endif; ?>

Wordpress：插入类别＆amp;标签是否自动存在？

3 个答案: