允许客户在WooCommerce中设置产品价格并添加到具有特定验证的购物车中

Question

我正在开发一款礼品卡产品，我需要客户能够设定价格，只要价格是100或以上。问题是，我不知道如何创建值检查。

然后，客户应该能够像往常一样添加到购物车中，并像往常一样结账。

如果产品被分配到礼品卡类别，我已经为产品价格包含了remove_action(由于某种原因，这不起作用(。

字段输入已经创建，数据应该被转移到购物车和结账处，并进入订单——但由于某种原因，它不起作用。

下一步是将产品价格设置为客户提交的礼品卡价值(只要是100或以上(，并在购物车和结账时显示为产品价格。

如果有人能评论并帮助我，那将是太棒了。

add_action( 'woocommerce_before_add_to_cart_form', 'giftcard_price_field' );
function giftcard_price_field() {
global $product;
if( has_term('giftcard', 'product_cat', $product->get_id() ) ) {

// if the product is assigned to the giftcard category, remove the product price
remove_action( 'woocommerce_single_product_summary', 'woocommerce_template_single_price', 10 );
// add a new input field for the price, allowing the customer to set the price
echo '<div class="giftcard-product-price">
<label for="giftcard-product-price">Giftcard value: </label>
<input type="text" id="giftcard-product-price" name="giftcard-product-price" placeholder="Giftcard value" maxlength="1000">
</div>';
}
}
add_filter( 'woocommerce_add_cart_item_data', 'giftcard_price_field_cart_data', 10, 3 ); 
function giftcard_price_field_cart_data( $cart_item_data, $product_id, $variation_id ) {
if( ! empty ( $_POST[ 'giftcard-product-price' ] ) ) {
// need to check that the value is NOT below 100 and if so, create a wc_notice warning
$cart_item_data['giftcard-product-price'] = sanitize_text_field( $_POST['giftcard-product-price']);
}
return $cart_item_data;
}
add_filter( 'woocommerce_get_item_data', 'giftcard_price_field_display_data', 10, 2 ); 
function giftcard_price_field_display_data( $item_data, $cart_item ) {
if( ! empty ( $cart_item[ 'giftcard-product-price' ] ) ) {
$item_data[] = array (
'key' => 'Giftcard value',
'value' => $cart_item['giftcard-product-price'],
'display' => '',
);
}
return $item_data;
}
add_action( 'woocommerce_checkout_create_order_line_item', 'giftcard_price_field_order_data', 10, 4 ); 
function giftcard_price_field_order_data( $item, $cart_item_key, $values, $order ) {
if( ! empty ( $values[ 'giftcard-product-price' ] ) ) {
$item->add_meta_data( 'Giftcard value', $values['giftcard-product-price'] );
}
}

Answer 1

• 如果has_term()，则在单个产品页面上添加新字段"giftcard_product_price">
• 删除单个产品页面上的原始产品价格
• 已经添加了各种验证，并且这些验证是可能的
• 产品(礼品卡(的价格根据客户输入的价格进行调整

function giftcard_price_field() {
global $product;

// Instanceof
if ( $product instanceof WC_Product ) {

// Set category(ies)
$cats = array ( 'giftcard' );
// True
if ( has_term( $cats, 'product_cat', $product->get_id() ) ) {
// add a new input field for the price, allowing the customer to set the price
echo '<div class="giftcard-product-price">
<label for="giftcard-product-price">Giftcard value: </label>
<input type="text" id="giftcard_product_price" name="giftcard_product_price" placeholder="Giftcard value" maxlength="1000">
</div>';
}
}
}
add_action( 'woocommerce_before_add_to_cart_button', 'giftcard_price_field', 10, 0 );
// Remove price
function action_woocommerce_single_product_summary() {
global $product;

// Instanceof
if ( $product instanceof WC_Product ) {

// Set category(ies)
$cats = array ( 'giftcard' );
// True
if ( has_term( $cats, 'product_cat', $product->get_id() ) ) {   
remove_action('woocommerce_single_product_summary','woocommerce_template_single_price', 10 );
}
}
}
add_action( 'woocommerce_single_product_summary', 'action_woocommerce_single_product_summary', 5 );
// Validate
function filter_woocommerce_add_to_cart_validation( $passed, $product_id, $quantity, $variation_id = null, $variations = null ) {
// Isset
if ( isset ( $_POST['giftcard_product_price'] ) ) {
$giftcard_product_price = $_POST['giftcard_product_price'];
// Error = empty, not numeric or less than 100
if ( empty ( $giftcard_product_price ) ) {
wc_add_notice( __( 'Field is empty', 'woocommerce' ), 'error' );
$passed = false;
} elseif ( ! is_numeric ( $giftcard_product_price ) ) {
wc_add_notice( __( 'NOT a number or a numeric string', 'woocommerce' ), 'error' );
$passed = false;                
} elseif ( $giftcard_product_price < 100 ) {
wc_add_notice( __( 'Less than 100', 'woocommerce' ), 'error' );
$passed = false;                
}   
}

return $passed;
}
add_filter( 'woocommerce_add_to_cart_validation', 'filter_woocommerce_add_to_cart_validation', 10, 5 );
function filter_add_cart_item_data( $cart_item_data, $product_id, $variation_id ) {
if ( isset ( $_POST['giftcard_product_price'] ) ) {
$cart_item_data['giftcard_product_price'] = sanitize_text_field( $_POST['giftcard_product_price'] );
}

return $cart_item_data; 
}
add_filter( 'woocommerce_add_cart_item_data', 'filter_add_cart_item_data', 10, 3 );
// Set price
function action_woocommerce_before_calculate_totals( $cart ) {
if ( is_admin() && ! defined( 'DOING_AJAX' ) )
return;
if ( did_action( 'woocommerce_before_calculate_totals' ) >= 2 )
return;
// Loop through cart items
foreach ( $cart->get_cart() as $cart_item ) {
if ( isset ( $cart_item['giftcard_product_price'] ) ) {
$cart_item['data']->set_price( $cart_item['giftcard_product_price'] );
}
}
}
add_action( 'woocommerce_before_calculate_totals', 'action_woocommerce_before_calculate_totals', 10, 1 );