dongyou7739
2018-10-24 08:32
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使用woocommerce_add_to_cart_validation挂钩时禁用页面重新加载

When you add a product to the cart, the user fills in the fields and when you click on the Add to order button (this is essentially to add to the cart), the fields are checked (for clarity, I simplified this to the if condition ($a === 1)).

My function used with woocommerce_add_to_cart_validation hook is:

function so_validate_add_cart_item($true){
  $a = 1;
  if( $a === 1){
    $true = 0;
    return $true;
  }

}

Everything works well and the service is not added, but the page is reloaded.

By default $true = 1, but tried to return value false too, the page is overloaded.

How to stop page reloading not completely, but under a certain condition and it is desirable in this hook?

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将产品添加到购物车时,用户会填写字段并单击“添加到订单” 按钮(这基本上是添加到购物车),字段被检查(为清楚起见,我将其简化为if条件($ a === 1))。

woocommerce_add_to_cart_validation 钩子一起使用的函数是:

  function so_validate_add_cart_item($ true){
 $  a = 1; 
 if($ a === 1){
 $ true = 0; 
返回$ true; 
} 
 
} 
   
 \  n 

一切正常,服务没有添加,但页面重新加载。

默认情况下$ true = 1,但尝试返回值false,页面重载 。

如何不完全停止页面重新加载,但在某种情况下,这个钩子是否可取?

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1条回答 默认 最新

  • doufangmu9087 2018-10-24 09:25
    已采纳

    You can't avoid page reloading when using woocommerce_add_to_cart_validation filter hook.

    There is 2 cases when using woocommerce_add_to_cart_validation filter hook:

    1) Allow add to cart: You return the default filter hook argument (which is true):

    add_filter( 'woocommerce_add_to_cart_validation', 'filter_add_to_cart_validation', 10, 3 );
    function filter_add_to_cart_validation( $passed, $product_id, $quantity ) {
        $a = 0; // <===
    
        if( $a === 1 ){
            $passed false; // Avoiding add to cart
    
            // (Optional) Display a custom eror notice
            wc_add_notice( __('Alert message: "add to cart avoided"', 'woocommerce' ), 'error' );
        }
        return $passed;
    }
    

    For ajax add to cart, the product will be added to cart (as by default) without reloading.

    For normal add to cart, the product will be added to cart and the page will be reloaded as by default.


    2) Avoid add to Cart: The condition in the IF statement matches, the filter hook argument is set to false and returned (optionally you can display an error message):

    add_filter( 'woocommerce_add_to_cart_validation', 'filter_add_to_cart_validation', 10, 3 );
    function filter_add_to_cart_validation( $passed, $product_id, $quantity) {
        $a = 1;
    
        // Any other value for $a than "1" will allow add to cart
        if( $a === 1){
            $passed false; // Avoid add to cart
    
            // (Optional) Display a custom eror notice
            wc_add_notice( __('Alert message: "add to cart avoided"', 'woocommerce' ), 'error' );
        }
        return $passed;
    }
    

    For ajax add to cart, customer will be redirected to the single product page (avoiding add to cart).

    For normal add to cart, the page will be reloaded as by default (avoiding add to cart).


    The only possible way to avoid page reloading should be to use a custom (Ajax) jQuery script, meaning that you should build your own validation functionality.

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