WordPress：保存用户元数据以在保存时发布元数据

问题描述

我想在保存后将一些用户元添加到帖子（以我的情况为WooCommerce产品）中。我想那是最好的方法？

我找到了一个解决方案，它像这样：https://wordpress.stackexchange.com/a/273271/96806

但是看来，它只执行一次？

这是代码：

function update_post_meta_with_user_meta() {
         //setup arguments to only get users with author role
         $user_args = array( 
                          'role' => 'author',);
        $authors   =  get_users( $user_args );
        //the below foreach could be replaced by adding something like:
        // fields => array( 'ID' ) to $user_args

       //instead I am just going through returned array of WP_User objects 
       //  and putting IDs into array
        foreach ( $authors as $a ) {
            $author_ids[] = $a->ID;
        }

       //setup post query arguments to only give us posts with authors in author_id array
       //which means only posts that have an author with the WP role of author
       // should exclude Editors,Admins,etc. that maybe have authored posts
        $post_args = array(
                          'author__in' => $author_ids,);

        //a new WP_Query with these args   
        $post_query   = new WP_Query( $post_args ) ) );

        //make sure we have posts returned
        if ( $post_query->have_posts() ) {

            //loop
            while ( $post_query->have_posts() ) {

                $post_query->the_post();

                //set $post_id variable to current post
                $post_id = get_the_id();

                //get author meta for author of current post
                $author_genere = get_the_author_meta('genere');

                //update the meta of the current post (by ID) 
                //  with the value of its author's user meta key
                update_post_meta( $post_id,'genere',$author_genere );
            }

            //reset the postdata
            wp_reset_postdata();
        }

    }
    //hook the above to init
    add_action( 'init','update_post_meta_with_user_meta' );

保存帖子/产品时有什么方法吗？

解决方法

虽然您的答案可能是“解决方法”，但它包含一些不必要的步骤，并且为此提供了更合适的选择。

• woocommerce_admin_process_product_object-在后端保存产品时保存产品元数据：

function action_woocommerce_admin_process_product_object( $product ) {
    $vendor_id   = $product->post_author;
    $vendor_info = get_userdata( $vendor_id );
    $vendor_name = get_user_meta( $vendor_id,'pv_shop_name',true );
    
    // For testing purposes,delete afterwards
    $vendor_name = 'the_vendor_name';
    
    $product->update_meta_data( '_custom_product_vendor_name',$vendor_name );
}
add_action( 'woocommerce_admin_process_product_object','action_woocommerce_admin_process_product_object',10,1 );

,

我想我找到了答案：

// Display Fields
add_action('woocommerce_product_options_general_product_data','woocommerce_product_custom_fields');
// Save Fields
add_action('woocommerce_process_product_meta','woocommerce_product_custom_fields_save');
function woocommerce_product_custom_fields()
{
    global $woocommerce,$post;

    $vendor_id      = $post->post_author;
    $vendor_info    = get_userdata($vendor_id);
    $vendor_name    = get_user_meta( $vendor_id,true );

    echo '<div class="product_custom_field">';
    // Custom Product Text Field
    woocommerce_wp_text_input(
        array(
            'id'        => '_custom_product_vendor_name','placeholder'   => $vendor_name,'value'         => $vendor_name,'label'         => __('Vendor','woocommerce'),'desc_tip'      => 'true'
        )
    );
    echo '</div>';
}

function woocommerce_product_custom_fields_save($post_id)
{
    // Custom Product Text Field
    $woocommerce_custom_product_vendor_name = $_POST['_custom_product_vendor_name'];
    if (!empty($woocommerce_custom_product_vendor_name))
        update_post_meta($post_id,'_custom_product_vendor_name',esc_attr($woocommerce_custom_product_vendor_name));
}

该函数获取用户的meta字段并将其保存后存储在数据库中。