这就是我为产品变体添加管理自定义字段的方法：
add_action( 'woocommerce_variation_options_pricing', 'add_custom_field_to_variations', 10, 3 );
function 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 )
) );
}
在产品变体保存中保存自定义字段：
add_action( 'woocommerce_save_product_variation', 'save_custom_field_variations', 10, 2 );
function save_custom_field_variations( $variation_id, $i ) {
$custom_field = $_POST['custom_field'][$i];
if ( isset( $custom_field ) ) update_post_meta( $variation_id, 'custom_field', esc_attr( $custom_field ) );
}
将自定义字段值存储到变化数据中
add_filter( 'woocommerce_available_variation', 'add_custom_field_variation_data' );
function 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;
}
单品页面已保存并显示该值，但以下函数未返回该值
尝试检索函数中自定义字段的值：
add_filter('woocommerce_variation_prices_price', 'get_custom_variable_price' )
function get_custom_variable_price() {
global $post;
$custom_value = get_post_meta( $variations[ 'variation_id' ], 'custom_field', true );
$custom_value = (float)$custom_value;
return $custom_value;
}
我只需要获取值（这是浮点数）：
您的 las 函数中存在一些错误和遗漏的内容（见下文）。
现在有两种方法可以在该挂钩函数中获取自定义字段值：
1）。使用
WC_Dataget_meta()add_filter('woocommerce_variation_prices_price', 'custom_variable_price', 100, 3 );
function custom_variable_price( $price, $variation, $product ) {
$value = floatval( $variation->get_meta( 'custom_field' ) );
if( $value > 0 ) {
$price = $value;
}
return $price;
}
2）。或者使用 WordPress
get_post_meta()add_filter('woocommerce_variation_prices_price', 'custom_variable_price', 100, 3 );
function custom_variable_price( $price, $variation, $product ) {
$value = floatval( floatval( get_post_meta( $variation->get_id(), 'custom_field', true ) );
if( $value > 0 ) {
$price = $value;
}
return $price;
}
代码位于活动子主题（或活动主题）的functions.php 文件中。已测试，适用于两者。
重要提示：您可能看不到前端结果，因为可变产品价格范围缓存在 WooCommerce 中以提高性能（请参阅下面的链接线程以更好地理解）。
相关主题：通过 WooCommerce 3+ 中的挂钩更改产品价格
与您其他功能相关的添加
自 WooCommerce 3 起，您可以按如下方式更新第二个和第三个功能：
add_action( 'woocommerce_admin_process_variation_object', 'save_custom_field_variation_value', 10, 2 );
function save_custom_field_variation_value( $variation, $i ) {
if( isset($_POST['custom_field'][$i]) ) {
$variation->update_meta_data( 'custom_field', floatval( sanitize_text_field($_POST['custom_field'][$i]) ) );
}
}
和第三个功能
add_filter( 'woocommerce_available_variation', 'add_variation_custom_field_value_to_variation_data', 10, 3 );
function add_variation_custom_field_value_to_variation_data( $variation_data, $product, $variation ) {
if ( $value = $variation->get_meta( 'custom_field' ) ) {
$variation_data['custom_field'] = '<div class="woocommerce_custom_field">' .__("Custom Field") . ': <span>' . $value . '</span></div>';
}
return $variation_data;
}
add_action( 'woocommerce_variation_options_pricing', 'variation_add_custom_field_to_variations', 10, 3 );
function variation_add_custom_field_to_variations( $loop, $variation_data, $variation ) {
woocommerce_wp_text_input( array(
'id' => 'per_package_price_field[' . $loop . ']',
'class' => 'short',
'wrapper_class' => 'form-row first',
'label' => __( 'Per Package Price', 'woocommerce' ),
'value' => get_post_meta( $variation->ID, 'per_package_price_field', true )
) );
woocommerce_wp_text_input( array(
'id' => 'package_qty_field[' . $loop . ']',
'class' => 'short',
'wrapper_class' => 'form-row-last',
'label' => __( 'Package Qty', 'woocommerce' ),
'value' => get_post_meta( $variation->ID, 'package_qty_field', true )
) );
woocommerce_wp_text_input( array(
'id' => 'package_box_field[' . $loop . ']',
'class' => 'short',
'wrapper_class' => 'form-row-last',
'label' => __( 'Package Box', 'woocommerce' ),
'value' => get_post_meta( $variation->ID, 'package_box_field', true )
) );
woocommerce_wp_textarea_input( array(
'id' => 'package_extra_field[' . $loop . ']',
'class' => 'short',
'wrapper_class' => 'form-row-last',
'label' => __( 'Product Discount Rule', 'woocommerce' ),
'placeholder' => '',
'description' => __( 'Enter the discount rule', 'woocommerce' ),
'value' => get_post_meta( $variation->ID, 'package_extra_field', true )
));
woocommerce_wp_text_input( array(
'id' => 'package_old_price_field[' . $loop . ']',
'class' => 'short',
'wrapper_class' => 'form-row-last',
'label' => __( 'Product Old Price', 'woocommerce' ),
'placeholder' => '',
'description' => __( 'Enter the discount rule', 'woocommerce' ),
'value' => get_post_meta( $variation->ID, 'package_old_price_field', true )
));
woocommerce_wp_text_input( array(
'id' => 'package_without_discount_quantity_field[' . $loop . ']',
'class' => 'short',
'wrapper_class' => 'form-row first',
'label' => __( 'Without Discount Maximum Quantity Of Product', 'woocommerce' ),
'placeholder' => '',
'description' => __( 'Enter the Maximum Quantity', 'woocommerce' ),
'custom_attributes' => array( 'required' => 'required' ),
'value' => get_post_meta( $variation->ID, 'package_without_discount_quantity_field', true )
));
woocommerce_wp_text_input( array(
'id' => 'package_20_discount_quantity_field[' . $loop . ']',
'class' => 'short',
'wrapper_class' => 'form-row-last',
'label' => __( '20% Discount Maximum Quantity Of Product', 'woocommerce' ),
'placeholder' => '',
'description' => __( 'Enter the Maximum Quantity', 'woocommerce' ),
'custom_attributes' => array( 'required' => 'required' ),
'value' => get_post_meta( $variation->ID, 'package_20_discount_quantity_field', true )
));
woocommerce_wp_text_input( array(
'id' => 'package_30_discount_quantity_field[' . $loop . ']',
'class' => 'short',
'wrapper_class' => 'form-row first',
'label' => __( '30% Discount Maximum Quantity Of Product', 'woocommerce' ),
'placeholder' => '',
'description' => __( 'Enter the Maximum Quantity', 'woocommerce' ),
'custom_attributes' => array( 'required' => 'required' ),
'value' => get_post_meta( $variation->ID, 'package_30_discount_quantity_field', true )
));
woocommerce_wp_text_input( array(
'id' => 'package_40_discount_quantity_field[' . $loop . ']',
'class' => 'short',
'wrapper_class' => 'form-row first',
'label' => __( '40% Discount Maximum Quantity Of Product', 'woocommerce' ),
'placeholder' => '',
'description' => __( 'Enter the Maximum Quantity', 'woocommerce' ),
'custom_attributes' => array( 'required' => 'required' ),
'value' => get_post_meta( $variation->ID, 'package_40_discount_quantity_field', true )
));
woocommerce_wp_text_input( array(
'id' => 'package_50_discount_quantity_field[' . $loop . ']',
'class' => 'short',
'wrapper_class' => 'form-row first',
'label' => __( '50% Discount Maximum Quantity Of Product', 'woocommerce' ),
'placeholder' => '',
'description' => __( 'Enter the Maximum Quantity', 'woocommerce' ),
'custom_attributes' => array( 'required' => 'required' ),
'value' => get_post_meta( $variation->ID, 'package_50_discount_quantity_field', true )
));
woocommerce_wp_textarea_input( array(
'id' => 'package_variation_table_field[' . $loop . ']',
'class' => 'short',
'wrapper_class' => 'form-row-last',
'label' => __( 'Variation Table', 'woocommerce' ),
'placeholder' => '',
'description' => __( 'Enter the Table rule', 'woocommerce' ),
'value' => get_post_meta( $variation->ID, 'package_variation_table_field', true )
));
}
add_action( 'woocommerce_save_product_variation', 'variation_save_custom_field_variations', 10, 2 );
function variation_save_custom_field_variations( $variation_id, $i ) {
$custom_field = $_POST['per_package_price_field'][$i];
$qty_field = $_POST['package_qty_field'][$i];
$package_box_field = $_POST['package_box_field'][$i];
$package_old_price_field = $_POST['package_old_price_field'][$i];
$package_without_discount_quantity_field = $_POST['package_without_discount_quantity_field'][$i];
$package_20_discount_quantity_field = $_POST['package_20_discount_quantity_field'][$i];
$package_30_discount_quantity_field = $_POST['package_30_discount_quantity_field'][$i];
$package_40_discount_quantity_field = $_POST['package_40_discount_quantity_field'][$i];
$package_50_discount_quantity_field = $_POST['package_50_discount_quantity_field'][$i];
if ( isset( $custom_field ) ) {update_post_meta( $variation_id, 'per_package_price_field', esc_attr( $custom_field ) );}
if ( isset( $qty_field ) ) {update_post_meta( $variation_id, 'package_qty_field', esc_attr( $qty_field ) );}
if ( isset( $package_box_field ) ) {update_post_meta( $variation_id, 'package_box_field', esc_attr( $package_box_field) );}
if ( isset( $package_old_price_field ) ) {update_post_meta( $variation_id, 'package_old_price_field', esc_attr( $package_old_price_field) );}
if ( isset( $package_without_discount_quantity_field ) ) {update_post_meta( $variation_id, 'package_without_discount_quantity_field', esc_attr( $package_without_discount_quantity_field) );}
if ( isset( $package_20_discount_quantity_field ) ) {update_post_meta( $variation_id, 'package_20_discount_quantity_field', esc_attr( $package_20_discount_quantity_field) );}
if ( isset( $package_30_discount_quantity_field ) ) {update_post_meta( $variation_id, 'package_30_discount_quantity_field', esc_attr( $package_30_discount_quantity_field) );}
if ( isset( $package_40_discount_quantity_field ) ) {update_post_meta( $variation_id, 'package_40_discount_quantity_field', esc_attr( $package_40_discount_quantity_field) );}
if ( isset( $package_50_discount_quantity_field ) ) {update_post_meta( $variation_id, 'package_50_discount_quantity_field', esc_attr( $package_50_discount_quantity_field) );}
}
// -----------------------------------------
// 3. Store custom field value into variation data
add_filter( 'woocommerce_available_variation', 'variation_add_custom_field_variation_data' );
function variation_add_custom_field_variation_data( $variations ) {
$variations['per_package_price_field'] = '<div class="woocommerce_custom_field">Per Package Price Field: <span>' . get_post_meta( $variations[ 'variation_id' ], 'per_package_price_field', true ) . '</span></div>';
$variations['package_qty_field'] = '<div class="woocommerce_custom_field">Package Quantity: <span>' . get_post_meta( $variations[ 'variation_id' ], 'package_qty_field', true ) . '</span></div>';
$variations['package_box_field'] = '<div class="woocommerce_custom_field">Package Box: <span>' . get_post_meta( $variations[ 'variation_id' ], 'package_box_field', true ) . '</span></div>';
$variations['package_price_field'] = get_post_meta( $variations[ 'variation_id' ], 'per_package_price_field', true );
$variations['package_without_discount_quantity_field'] = get_post_meta( $variations[ 'variation_id' ], 'package_without_discount_quantity_field', true );
$variations['package_20_discount_quantity_field'] = get_post_meta( $variations[ 'variation_id' ], 'package_20_discount_quantity_field', true );
$variations['package_30_discount_quantity_field'] = get_post_meta( $variations[ 'variation_id' ], 'package_30_discount_quantity_field', true );
$variations['package_40_discount_quantity_field'] = get_post_meta( $variations[ 'variation_id' ], 'package_40_discount_quantity_field', true );
$variations['package_50_discount_quantity_field'] = get_post_meta( $variations[ 'variation_id' ], 'package_50_discount_quantity_field', true );
return $variations;
}