如何在首页产品页面的产品标题下显示可变产品的自定义字段

Question

后台添加自定义字段的代码如下：

// 1. Add custom field input @ Product Data > Variations > Single Variation
function bbloomer_add_custom_field_to_variations( $loop, $variation_data, $variation ) {
woocommerce_wp_text_input( array( 
'id' => 'custom_field[' . $loop . ']', 
'class' => 'short', 
'label' => __( 'Custom Field', 'woocommerce' ),
'value' => get_post_meta( $variation->ID, 'custom_field', true )
) 
);      
}
add_action( 'woocommerce_variation_options_pricing', 'bbloomer_add_custom_field_to_variations', 10, 3 ); 
// 2. Save custom field on product variation save
function bbloomer_save_custom_field_variations( $variation_id, $i ) {
    $custom_field = $_POST['custom_field'][$i];
    if ( ! empty( $custom_field ) ) {
        update_post_meta( $variation_id, 'custom_field', esc_attr( $custom_field ) );
    } else delete_post_meta( $variation_id, 'custom_field' );
}
add_action( 'woocommerce_save_product_variation', 'bbloomer_save_custom_field_variations', 10, 2 );
// 3. Store custom field value into variation data
function bbloomer_add_custom_field_variation_data( $variations ) {
    $variations['custom_field'] = '<div class="woocommerce_custom_field">Custom Field: <span>' . get_post_meta( $variations[ 'variation_id' ], 'custom_field', true ) . '</span></div>';
    return $variations;
}
add_filter( 'woocommerce_available_variation', 'bbloomer_add_custom_field_variation_data' );

那么，如何在首页产品页面的产品标题下同时显示这个新添加的自定义字段和现有的SKU字段，并且：在选择不同的变体时，相应的自定义字段和SKU字段也会动态显示。

我尝试过，但它没有显示在标题下方

Answer 1

BBloomer 的代码有点过时了...

要在产品标题下方显示选定的变体自定义字段，请使用以下命令：

// Add custom field(s) to product variations from specific variable products
add_action( 'woocommerce_variation_options_pricing', 'add_variation_setting_fields', 10, 3 ); 
function add_variation_setting_fields( $loop, $variation_data, $variation ) {
    $field_key = 'custom_field';

    woocommerce_wp_text_input( array( 
        'id'            => $field_key.'['.$loop.']', 
        'label'         => __( 'Custom Field', 'woocommerce' ),
        'class'         => 'short', 
        'wrapper_class' => 'form-row',
        'value'         => get_post_meta( $variation->ID, $field_key, true )
    ) );      
}

// Save the custom field from product variations
add_action('woocommerce_admin_process_variation_object', 'save_variation_setting_fields', 10, 2 );
function save_variation_setting_fields($variation, $i) {
    $field_key = 'custom_field';

    if ( isset($_POST[$field_key][$i]) ) {
        $variation->update_meta_data($field_key, sanitize_text_field($_POST[$field_key][$i]));
    }
}

// Add the custom field value to the product form data
add_filter( 'woocommerce_available_variation', 'available_variation_custom_field_value', 10, 3 );
function available_variation_custom_field_value( $variation_data, $product, $variation ) {
    $variation_data['custom_field'] = $variation->get_meta('custom_field');
    return $variation_data;
}
    
// Display selected variation custom field below product title
add_action('woocommerce_single_product_summary', 'display_custom_field_below_product_title', 7 );
function display_custom_field_below_product_title() {
    global $product;

    if ( $product->is_type('variable') ) :

    wc_enqueue_js("$('form.variations_form').on('show_variation', function(event, data){
        if ( data.custom_field ) {
            $('.custom-field').html(data.custom_field).show();
        }
    }).on('hide_variation', function(){
        $('div.custom-field').hide().html('');
    });");

    echo '<div class="custom-field" style="display:none;"></div>';

    endif;
}

代码位于子主题的functions.php 文件中（或插件中）。已测试并有效。