在 WooCommerce 上重新声明函数时出错

Question

在 WooCommerce 中，我在设置自定义库存状态时使用以下函数隐藏购物车按钮：

    //display the custom stock status on the pages
    add_action( 'woocommerce_after_shop_loop_item_title', 'wcs_stock_text_shop_page', 25 );
    //create our function
    function wcs_stock_text_shop_page() {
        //returns an array with 2 items availability and class for CSS
        global $product;

        $availability = $product->get_stock_status();
        
         if ( $product->get_stock_status() === 'noproduzione') {
            echo '<span style="color:#b20000;">Fuori produzione!</span>';
//hide purchase button if in "noproduzione"
add_filter('woocommerce_is_purchasable', 'filter_is_purchasable_callback', 10, 2 );
add_filter('woocommerce_variation_is_purchasable', 'filter_is_purchasable_callback', 10, 2 );
function filter_is_purchasable_callback( $purchasable, $product ) {
    if ( $product->get_stock_status() === 'noproduzione' ) { 
        return false;
    }

    return $purchasable;
}
         }
    else if ( $product->get_stock_status() === 'onbackorder') {
        echo '<span style="color:#13b200;">Disponibile su ordinazione</span>';
         }
    else if ( $product->get_stock_status() === '10days') {
        echo '<span style="color:#13b200;">Disponibile in 10 giorni</span>';
         }
    else if ( $product->get_stock_status() === 'inarrivo') {
        echo '<span style="color:#e0c81d;">In arrivo</span>';
         }
    
    else if ( $product->get_stock_status() === 'outofstock') {
        echo '<span style="color:#b20000;">Terminato!</span>';
         }
    else echo '<span style="color:#53af00;">Disponibile!</span>';
 
}

但是当我尝试编辑我的主页页面时收到错误消息：

Fatal error:
Cannot redeclare filter_is_purchasable_callback() (previously declared in functions.php)".

如何解决？

Answer 1

您已在 wcs_stock_text_shop_page() 函数中插入了以下现有代码：

//hide purchase button if in "noproduzione"
add_filter('woocommerce_is_purchasable', 'filter_is_purchasable_callback', 10, 2 );
add_filter('woocommerce_variation_is_purchasable', 'filter_is_purchasable_callback', 10, 2 );
function filter_is_purchasable_callback( $purchasable, $product ) {
    if ( $product->get_stock_status() === 'noproduzione' ) { 
        return false;
    }

    return $purchasable;
}

所以包含函数filter_is_purchasable_callback()的代码块存在两次

看看。

所以你的相关代码应该是：

//display the custom stock status on the pages
add_action( 'woocommerce_after_shop_loop_item_title', 'wcs_stock_text_shop_page', 25 );
//create our function
function wcs_stock_text_shop_page() {
    //returns an array with 2 items availability and class for CSS
    global $product;

    $availability = $product->get_stock_status();
    
     if ( $product->get_stock_status() === 'noproduzione') {
        echo '<span style="color:#b20000;">Fuori produzione!</span>';

     }
    else if ( $product->get_stock_status() === 'onbackorder') {
        echo '<span style="color:#13b200;">Disponibile su ordinazione</span>';
         }
    else if ( $product->get_stock_status() === '10days') {
        echo '<span style="color:#13b200;">Disponibile in 10 giorni</span>';
         }
    else if ( $product->get_stock_status() === 'inarrivo') {
        echo '<span style="color:#e0c81d;">In arrivo</span>';
         }
    
    else if ( $product->get_stock_status() === 'outofstock') {
        echo '<span style="color:#b20000;">Terminato!</span>';
         }
    else echo '<span style="color:#53af00;">Disponibile!</span>';
 
}

//hide purchase button if in "noproduzione"
add_filter('woocommerce_is_purchasable', 'filter_is_purchasable_callback', 10, 2 );
add_filter('woocommerce_variation_is_purchasable', 'filter_is_purchasable_callback', 10, 2 );
function filter_is_purchasable_callback( $purchasable, $product ) {
    if ( $product->get_stock_status() === 'noproduzione' ) { 
        return false;
    }

    return $purchasable;
}

正在检查您是否只有一次此代码块：

//hide purchase button if in "noproduzione"
add_filter('woocommerce_is_purchasable', 'filter_is_purchasable_callback', 10, 2 );
add_filter('woocommerce_variation_is_purchasable', 'filter_is_purchasable_callback', 10, 2 );
function filter_is_purchasable_callback( $purchasable, $product ) {
    if ( $product->get_stock_status() === 'noproduzione' ) { 
        return false;
    }

    return $purchasable;
}

在 WooCommerce 上重新声明函数时出错

Error on redeclaring function on WooCommerce

php

wordpress

function

woocommerce

hook-woocommerce