按关系字段(ACF)的Elementor帖子的自定义查询过滤器 [英] Custom Query Filter for Elementor Posts by relationship field (ACF)

问题描述

我有一个名为艺术家"的自定义帖子类型设置.每个单个艺术家"都是一个页面(如果需要，可以提供艺术家资料)，并具有通过高级自定义字段"(ACF)通过关系字段类型与该艺术家相关联的产品的列表.我需要将这些产品显示在艺术家页面上的类别中.因此，在Elementor中，我需要指定一个查询过滤器ID"以将产品简单地划分为类别.

I have a custom post type setup called 'Artists'. Each Single Artist is a page (artist profile if you wish), has a list of products that are associated with that artist via the relationship field type through Advanced Custom Fields (ACF). I need the products to be displayed within their categories on the artist page. So within Elementor I need to specify a 'Query Filter ID' to simply split the products into categories.

到目前为止我尝试过的事情

由于要生成查询ID，我试图通过自定义查询在列表中仅显示特定类别的产品.

I am trying to display only products from a certain category in a list via a custom query as I need to generate a Query ID.

我一直在尝试许多不同的方法来做到这一点，但现在我很茫然.我拥有的最新代码在这里...我想念什么?

I've been trying a bunch of different ways to do this but now I'm at a loss. The latest code I have is here... what am I missing?

/** Product category 'SOFTWARE' **/
add_filter( 'software_product', 'product_category_software' );

function product_category_software( $variable ) {

    $query_args = array(
       'post_type' => 'product',
       'tax_query' => array(
            array(
                'taxonomy' => 'category',
                'field'    => 'slug',
                'terms'    => 'software', 
            ),
        ),
     );
return $variable;
}

推荐答案

答案

您需要使用此

https://developers.elementor.com/custom-query-filter/#Using_the_Custom_Filter

arbitrary_name_query_id -您在Elementor字段中填写的QUERY ID，

arbitrary_name_query_id - the QUERY ID that you fill in the Elementor field,

要放置在 functions.php 中的代码:

add_action( 'elementor/query/arbitrary_name_query_id', function( $query ) {
    $meta_query = $query->get( 'meta_query' ); 
    $meta_query[] = [ 
        'key' => 'acf_key', // put ACF relationship field name 
        'value' => get_the_ID(), 
        'compare' => '=', 
    ]; 
    $query->set( 'meta_query', $meta_query ); 
} ); 

关于给定的代码

首先，如过滤器上的Wordpress文档所述:

它们(即过滤器)为函数修改其他数据提供了一种方法功能.

They (i.e. filters) provide a way for functions to modify data of other functions.

这意味着过滤器函数(在本例中为 product_category_software )接收经过后续修改的数据并将其返回:

Which means that the filter function, in this case it's product_category_software, receives data that subsequntly modifies and returns it back:

add_filter( 'software_product', 'product_category_software' );
function product_category_software( $variable ) { // receive $variable

    /**
     * Modify $variable here
     */

    return $variable; // return modified $variable
}

在您的情况下， product_category_software 不会修改接收到的内容，但是会引入新的数据 $ query_args 和平度，该意义不会出现，因为它不会返回.

In your case product_category_software doesn't modify what receives, but introduces new peace of data $query_args which makes no sence, since it is not going to be returned.

其次，， add_filter 函数的第一个参数应该是现有的过滤器名称，而 software_product 则不是.

Secondly, the first argument of the add_filter function should be an existent filter name, the software_product is not.

第三，产品类别分类的正确名称是 product_cat .

Thirdly, the correct name of the taxonomy of product categories is product_cat.

方法#1 使用 pre_get_posts

Aproach #1 Modfying main query with pre_get_posts

function your_arbitrary_name( $query ) { // receive
    if ( ! is_admin() && is_post_type_archive( 'product' ) && $query->is_main_query() ) {
        $tax_query = array(
            array(
                'taxonomy' => 'product_cat',
                'field' => 'slug',
                'terms' => array('software'),
            )
        );

        $query->set( 'meta_query', $tax_query ); // modify
    }
    return $query; // and return
}
add_action( 'pre_get_posts', 'your_arbitrary_name', 20 );

方法2 #strong>使用 wc_get_products 或 WC_Product_Query

Aproach #2 Use wc_get_products or WC_Product_Query

例如，在您的控制器甚至模板中使用:

Example, use in your Controller or even in the template:

$args = array(
    'category' => array( 'software' ),
);
$products = wc_get_products( $args );

阅读有关 wc_get_products和WC_Product_Query

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