未验证并保存在Woocommerce中的单个产品自定义日期字段

Question

我在单个产品页面上添加了两个客户日期输入。在添加到购物车之前，我需要对它们进行要求和验证，并且还希望日期显示在购物车/结帐页面和订单电子邮件中。

我在这里找到了所需的代码段，但是它仅用于一个自定义字段，因此我将其调整为两个：https://www.kathyisawesome.com/add-a-custom-field-to-woocommerce-product/

输入字段显示正常，但是一旦单击“添加到购物车”按钮，订单中的内容就不会显示出来。

这是我的functions.php文件中使用的代码：

/*
 * Display inputs on single product page
 */
function amp_custom_option_1(){
    $value = isset( $_POST['_est_delivery'] ) ? sanitize_text_field( $_POST['_est_delivery'] ) : '';
    printf( '<div id="dates"><div class="delivery"><label>%s</label><input name="_est_delivery" value="%s" type="date" required /></div>', __( 'Estimated Delivery Date:', 'amp-plugin-textdomain-1' ), esc_attr( $value ) );
}
add_action( 'woocommerce_before_add_to_cart_form', 'amp_custom_option_1', 9 );

function amp_custom_option_2(){
    $value = isset( $_POST['_est_pickup'] ) ? sanitize_text_field( $_POST['_est_pickup'] ) : '';
    printf( '<div class="pickup"><label>%s</label><input name="_est_pickup" value="%s" type="date" required /></div></div>', __( 'Estimated Pickup Date:', 'amp-plugin-textdomain-2' ), esc_attr( $value ) );
}
add_action( 'woocommerce_before_add_to_cart_form', 'amp_custom_option_2', 9 );


/*
 * Validate when adding to cart
 */
function amp_add_to_cart_validation_1($passed, $product_id, $qty){

    if( isset( $_POST['_est_delivery'] ) && sanitize_text_field( $_POST['_est_delivery'] ) == '' ){
        $product = wc_get_product( $product_id );
        wc_add_notice( sprintf( __( '%s cannot be added to the cart until you enter a delivery date.', 'amp-plugin-textdomain-1' ), $product->get_title() ), 'error' );
        return false;
    }

    return $passed;

}
add_filter( 'woocommerce_add_to_cart_validation', 'amp_add_to_cart_validation_1', 10, 3 );

function amp_add_to_cart_validation_2($passed, $product_id, $qty){

    if( isset( $_POST['_est_pickup'] ) && sanitize_text_field( $_POST['_est_pickup'] ) == '' ){
        $product = wc_get_product( $product_id );
        wc_add_notice( sprintf( __( '%s cannot be added to the cart until you enter a pickup date.', 'amp-plugin-textdomain-2' ), $product->get_title() ), 'error' );
        return false;
    }

    return $passed;

}
add_filter( 'woocommerce_add_to_cart_validation', 'amp_add_to_cart_validation_2', 10, 3 );


/*
 * Add custom data to the cart item
 */
function amp_add_cart_item_data_1( $cart_item, $product_id ){

    if( isset( $_POST['_est_delivery'] ) ) {
        $cart_item['est_delivery'] = sanitize_text_field( $_POST['_est_delivery'] );
    }

    return $cart_item;

}
add_filter( 'woocommerce_add_cart_item_data', 'amp_add_cart_item_data_1', 10, 2 );

function amp_add_cart_item_data_2( $cart_item, $product_id ){

    if( isset( $_POST['_est_pickup'] ) ) {
        $cart_item['est_pickup'] = sanitize_text_field( $_POST['_est_pickup'] );
    }

    return $cart_item;

}
add_filter( 'woocommerce_add_cart_item_data', 'amp_add_cart_item_data_2', 10, 2 );


/*
 * Load cart data from session
 */
function amp_get_cart_item_from_session_1( $cart_item, $values ) {

    if ( isset( $values['est_delivery'] ) ){
        $cart_item['est_delivery'] = $values['est_delivery'];
    }

    return $cart_item;

}
add_filter( 'woocommerce_get_cart_item_from_session', 'amp_get_cart_item_from_session_1', 20, 2 );

function amp_get_cart_item_from_session_2( $cart_item, $values ) {

    if ( isset( $values['est_pickup'] ) ){
        $cart_item['est_pickup'] = $values['est_pickup'];
    }

    return $cart_item;

}
add_filter( 'woocommerce_get_cart_item_from_session', 'amp_get_cart_item_from_session_2', 20, 2 );


/*
 * Add meta to order item
 */
function amp_add_order_item_meta_1( $item_id, $values ) {

    if ( ! empty( $values['est_delivery'] ) ) {
        woocommerce_add_order_item_meta( $item_id, 'est_delivery', $values['est_delivery'] );           
    }
}
add_action( 'woocommerce_add_order_item_meta', 'amp_add_order_item_meta_1', 10, 2 );

function amp_add_order_item_meta_2( $item_id, $values ) {

    if ( ! empty( $values['est_pickup'] ) ) {
        woocommerce_add_order_item_meta( $item_id, 'est_pickup', $values['est_pickup'] );           
    }
}
add_action( 'woocommerce_add_order_item_meta', 'amp_add_order_item_meta_2', 10, 2 );


/*
 * Get item data to display in cart
 */
function amp_get_item_data_1( $other_data, $cart_item ) {

    if ( isset( $cart_item['est_delivery'] ) ){

        $other_data[] = array(
            'name' => __( 'Estimated Delivery Date:', 'amp-plugin-textdomain-1' ),
            'value' => sanitize_text_field( $cart_item['est_delivery'] )
        );

    }

    return $other_data;

}
add_filter( 'woocommerce_get_item_data', 'amp_get_item_data_1', 10, 2 );

function amp_get_item_data_2( $other_data, $cart_item ) {

    if ( isset( $cart_item['est_pickup'] ) ){

        $other_data[] = array(
            'name' => __( 'Estimated Pickup Date', 'amp-plugin-textdomain-2' ),
            'value' => sanitize_text_field( $cart_item['est_pickup'] )
        );

    }

    return $other_data;

}
add_filter( 'woocommerce_get_item_data', 'amp_get_item_data_2', 10, 2 );



/*
 * Show custom field in order overview
 */
function amp_order_item_product_1( $cart_item, $order_item ){

    if( isset( $order_item['est_delivery'] ) ){
        $cart_item_meta['est_delivery'] = $order_item['est_delivery'];
    }

    return $cart_item;

}
add_filter( 'woocommerce_order_item_product', 'amp_order_item_product_1', 10, 2 );

function amp_order_item_product_2( $cart_item, $order_item ){

    if( isset( $order_item['est_pickup'] ) ){
        $cart_item_meta['est_pickup'] = $order_item['est_pickup'];
    }

    return $cart_item;

}
add_filter( 'woocommerce_order_item_product', 'amp_order_item_product_2', 10, 2 );


/* 
 * Add the field to order emails 
 */ 
function amp_email_order_meta_fields_1( $fields ) { 
    $fields['est_delivery'] = __( 'Estimated Delivery Date:', 'amp-plugin-textdomain-1' ); 
    return $fields; 
} 
add_filter('woocommerce_email_order_meta_fields', 'amp_email_order_meta_fields_1');

function amp_email_order_meta_fields_2( $fields ) { 
    $fields['est_delivery'] = __( 'Estimate Pickup Date:', 'amp-plugin-textdomain-2' ); 
    return $fields; 
} 
add_filter('woocommerce_email_order_meta_fields', 'amp_email_order_meta_fields_2');

我不确定我的代码有什么问题吗？任何帮助表示赞赏。

Answer 1

存在一些错误和错误。我已更改并删除了一些挂钩，删除了不必要的代码，合并了功能，并重新访问了所有代码。由于您的2个日期字段位于单个产品页面上，因此它们将与购物车和订购商品 （因此订购商品元数据）相关。

我在数组中的第一个函数中设置了2个日期字段段和标签。然后，我在其他任何地方调用该函数，并使用foreach循环处理每个字段。这样可以避免重复，优化和压缩代码。

代码（注释）：

// Utility function that contain the 2 field keys and labels pairs used on all other functions
function get_date_label_keys(){
    $text_domain   = 'woocommerce';
    return array( 'est_delivery' => __( 'Estimated Delivery Date', $text_domain ),
                  'est_pickup'   => __( 'Estimated Pickup Date', $text_domain ) );
}

// Display custom fields on single product page (hook replaced)
add_action( 'woocommerce_before_add_to_cart_button', 'amp_display_custom_fields', 20 );
function amp_display_custom_fields(){
    echo '<div id="dates">';
    // Loop through each custom field 
    foreach( get_date_label_keys() as $key => $label ){
        $class = str_replace('est_', '', $key); // The class
        $value = isset($_POST[$key]) ? sanitize_text_field($_POST[$key]) : ''; // Display the value
        printf( '<div class="%s"><label>%s:</label> <input type="date" name="%s" value="%s" required /></div>', $class, $label, $key, $value );
    }
    echo '</div><br clear="all">';
}

// Add to cart fields validation (in case of need)
add_filter( 'woocommerce_add_to_cart_validation', 'amp_add_to_cart_validation', 20, 3 );
function amp_add_to_cart_validation( $passed, $product_id, $qty ){
    // Loop through each custom field 
    foreach( get_date_label_keys() as $key => $label ){
        if( isset( $_POST[$key] ) && empty( $_POST[$key] ) ){
            wc_add_notice( sprintf( __( '%s cannot be added to the cart until you enter a delivery date.', $domain ), get_the_title() ), 'error' );
            $passed = false;
        }
    }
    return $passed;
}

// Add to cart items the custom data
add_filter( 'woocommerce_add_cart_item_data', 'amp_add_cart_item_data', 20, 2 );
function amp_add_cart_item_data( $cart_item, $product_id ){
    // Loop through each custom field 
    foreach( get_date_label_keys() as $key => $label ){
        if( isset( $_POST[$key] ) )
            $cart_item['dates'][$key] = sanitize_text_field( $_POST[$key] );
    }
    return $cart_item;
}

// Display the dates in cart items on cart and checkout pages
add_filter( 'woocommerce_get_item_data', 'amp_get_item_data', 20, 2 );
function amp_get_item_data( $item_data, $cart_item = null ) {
    // Loop through each custom field 
    foreach( get_date_label_keys() as $key => $label ){
        if ( isset( $cart_item['dates'][$key] ) )
            $item_data[] = array(
                'name' => $label,
                'value' => sanitize_text_field( $cart_item['dates'][$key] )
            );
    }
    return $item_data;
}

// Add order item meta data and Display the data in order items (hook replaced)
add_action( 'woocommerce_checkout_create_order_line_item', 'amp_add_order_item_meta', 20, 4 );
function amp_add_order_item_meta( $item, $cart_item_key, $values, $order ) {
    foreach( get_date_label_keys() as $key => $label ){
    // Loop through each custom field 
        if ( ! empty( $values['dates'][$key] ) )
            $item->update_meta_data( $label, $values['dates'][$key] );
    }
}

代码进入您的活动子主题（或活动主题）的function.php文件中。经过测试，可以正常工作。

在购物车页面（也包括结帐页面）：

已收到订单和订单查看页面（也在管理员订单编辑页面和电子邮件通知中）：