WooCommerce 短代码以 ajaxify 消息显示："You need to spend to get free shipping"

Question

我修改了这个脚本来制作一个短代码，显示客户需要花费多少才能获得免费送货。

 /** 
 * @author        Rodolfo Melogli
 * @compatible    WooCommerce 3.9
 * @donate      https://businessbloomer.com/bloomer-armada/
 */
 
add_shortcode ('woo_freeshipping_target', 'woo_freeship_target' );
  
function woo_freeship_target() {
  ob_start();
    
   $min_amount = 279; //change this to your free shipping threshold
   
   $current = WC()->cart->subtotal;
  
   if ( $current < $min_amount ) {
      $added_text = wc_price( $min_amount - $current );
      $notice = sprintf( $added_text );
      echo '<span> You need to add '.$notice.'</span>';
   }
    
     else if ( $current >= $min_amount ) {
      echo '<span>Free Shipping!</span>';
   }
  
    return ob_get_clean();
    
}

但是我不知道如何在修改商品数量时自动更新。有什么想法吗？

Answer 1

要ajax确定您的消息，以便在小计更改（通过ajax）时更新消息，请使用woocommerce_add_to_cart_fragments 过滤器挂钩

所以你得到：

function custom_message() {
    // Initialize
    $message = __( 'Default message', 'woocommerce' );
    
    // True
    if ( WC()->cart ) {
        // Change this to your free shipping threshold
        $min_amount = 279;
        
        // Get cart subtotal
        $subtotal = WC()->cart->get_subtotal();

        if ( $subtotal < $min_amount ) {
            $message = sprintf( __( 'You need to add %s to get free shipping', 'woocommerce' ), wc_price( $min_amount - $subtotal ) );
        } else {
            $message = __( 'Free shipping', 'woocommerce' );
        }
    }
    
    return $message;
}

// Refreshing on cart ajax events
function filter_woocommerce_add_to_cart_fragments( $fragments ) {    
    $fragments['div.display-message'] = '<div class="display-message">' . custom_message() . '</div>';
    
    return $fragments;
}
add_filter( 'woocommerce_add_to_cart_fragments', 'filter_woocommerce_add_to_cart_fragments', 10, 1 );

// Shortcode
function display_my_message() {
    return '<div class="display-message">' . custom_message() . '</div>';
} 
// Register shortcode
add_shortcode( 'display_message', 'display_my_message' );

SHORTCODE USAGE

In an existing page:

[display_message]

Or in PHP:

echo do_shortcode("[display_message]");

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