我试图实现woocommerces排除美国从免费送货（澳大利亚网站）片断，但我遇到了此问题：
“致命错误：调用一个成员函数get_shipping_state（）一个非对象在/home/bpcsport/public_html/wp-content/plugins/wa-exclude/wa-exclude.php上线30”
我的客户需要从他们通过woocommerce提供免费送货的交易排除西澳大利亚州。 我得到的错误无论哪种方式，如果我把它放在我的主题function.php或通过插件格式。
我也尝试下面的方法都无济于事。
我怎样才能为特定国家禁用免费送货？
这是从woocommerce的片段，是在插件
/**
* Hide ALL shipping options when free shipping is available and customer is NOT in certain states
* Hide Free Shipping if customer IS in those states
*
* Change $excluded_states = array( 'AK','HI','GU','PR' ); to include all the states that DO NOT have free shipping
*/
add_filter( 'woocommerce_available_shipping_methods', 'hide_all_shipping_when_free_is_available' , 10, 1 );
/**
* Hide ALL Shipping option when free shipping is available
*
* @param array $available_methods
*/
function hide_all_shipping_when_free_is_available( $available_methods ) {
$excluded_states = array( 'WA' );
if( isset( $available_methods['free_shipping'] ) AND !in_array( $woocommerce->customer->get_shipping_state(), $excluded_states ) ) :
// Get Free Shipping array into a new array
$freeshipping = array();
$freeshipping = $available_methods['free_shipping'];
// Empty the $available_methods array
unset( $available_methods );
// Add Free Shipping back into $avaialble_methods
$available_methods = array();
$available_methods[] = $freeshipping;
endif;
if( isset( $available_methods['free_shipping'] ) AND in_array( $woocommerce->customer->get_shipping_state(), $excluded_states ) ) {
// remove free shipping option
unset( $available_methods['free_shipping'] );
}
return $available_methods;
}
?>
