php 将自定义字段添加到购物车/结帐

Posted 2021-05-04

// 1. CREATE CUSTOM SHIPPING PRICE FIELD

function custom_field_shipping() {
 $args = array(
 'id' => 'custom-shipping-field',
 'label' => __( 'Additional Shipping Charges', 'pmctool' ),
 'class' => 'custom-field',
 'desc_tip' => true,
 'description' => __( 'If this product has additional shipping charges that will be added at checkout, enter them here including the $ sign.', 'pmctool' ),
 );
 woocommerce_wp_text_input( $args ); }

add_action( 'woocommerce_product_options_shipping', 'custom_field_shipping' );




// 2. SAVE CUSTOM SHIPPING PRICE FIELD

function save_custom_field_shipping( $post_id ) {
 $product = wc_get_product( $post_id );
 $title = isset( $_POST['custom-shipping-field'] ) ? $_POST['custom-shipping-field'] : '';
 $product->update_meta_data( 'custom-shipping-field', sanitize_text_field( $title ) );
 $product->save(); }

add_action( 'woocommerce_process_product_meta', 'save_custom_field_shipping' );




// 3. DISPLAY CUSTOM SHIPPING PRICE FIELD

function add_shipping_cost_to_cart( $cart_data, $cart_item ) {
    $custom_items = array();

if( !empty( $cart_data ) )
        $custom_items = $cart_data;
 // Get the product ID
    $product_id = $cart_item['product_id'];
if( $custom_field_value = get_post_meta( $product_id, 'custom-shipping-field', true ) )
        $custom_items[] = array(
            'name'      => __( 'Freight', 'woocommerce' ),
            'value'     => $custom_field_value,
            'display'   => '<span class="custom-shipping-costs">+ $' . $custom_field_value . ' Shipping</span>',
        );
    return $custom_items; }

add_filter( 'woocommerce_get_item_data', 'add_shipping_cost_to_cart', 10, 2 );



// 4. MULTIPLY BY QUANTITY IN CART

function add_shipping_cost_to_cart( $cart_data, $cart_item ) {
    $custom_items = array();
if( !empty( $cart_data ) )
        $custom_items = $cart_data;
// Get the product ID
    $product_id = $cart_item['product_id'];
	$qty =  $cart_item['quantity'];
if( $custom_field_value = get_post_meta( $product_id, 'custom-shipping-field', true ) )
        $custom_items[] = array(
            'name'      => __( 'Freight', 'woocommerce' ),
            'value'     => $custom_field_value,
            'display'   => '<span class="custom-shipping-costs"> $' . $custom_field_value . ' x ' . $qty . ' = $' . $custom_field_value * $qty . ' Shipping</span>',
        );
    return $custom_items; }

add_filter( 'woocommerce_get_item_data', 'add_shipping_cost_to_cart', 10, 2 );





// Reference: https://stackoverflow.com/questions/43893196/display-custom-fields-value-in-woocommerce-cart-checkout-items