php – 在Woocommerce 3中更换价格区间处理默认变化显示价格

在我们的woocommerce网站上,我试图根据客户从下拉菜单中选择的变化来更新显示的价格,如下所示：

我使用了一个由LoictheAztec在另一个答案中提交的PHP函数：Replace the Variable Price range by the chosen variation price in WooCommerce 3

add_action( 'woocommerce_before_single_product', 'move_variations_single_price', 1 );
function move_variations_single_price(){
    global $product, $post;

    if ( $product->is_type( 'variable' ) ) {
        // removing the variations price for variable products
        remove_action( 'woocommerce_single_product_summary', 'woocommerce_template_single_price', 10 );

        // Change location and inserting back the variations price
        add_action( 'woocommerce_single_product_summary', 'replace_variation_single_price', 10 );
    }
}

function replace_variation_single_price(){
    global $product;

    // Main Price
    $prices = array( $product->get_variation_price( 'min', true ), $product->get_variation_price( 'max', true ) );
    $price = $prices[0] !== $prices[1] ? sprintf( __( 'From: %1$s', 'woocommerce' ), wc_price( $prices[0] ) ) : wc_price( $prices[0] );

    // Sale Price
    $prices = array( $product->get_variation_regular_price( 'min', true ), $product->get_variation_regular_price( 'max', true ) );
    sort( $prices );
    $saleprice = $prices[0] !== $prices[1] ? sprintf( __( 'From: %1$s', 'woocommerce' ), wc_price( $prices[0] ) ) : wc_price( $prices[0] );

    if ( $price !== $saleprice && $product->is_on_sale() ) {
        $price = '<del>' . $saleprice . $product->get_price_suffix() . '</del> <ins>' . $price . $product->get_price_suffix() . '</ins>';
    }

    ?>
    <style>
        div.woocommerce-variation-price,
        div.woocommerce-variation-availability,
        div.hidden-variable-price {
            height: 0px !important;
            overflow:hidden;
            position:relative;
            line-height: 0px !important;
            font-size: 0% !important;
        }
    </style>
    <script>
    jQuery(document).ready(function($) {
        $('select').blur( function(){
            if( '' != $('input.variation_id').val() ){
                if($('p.availability'))
                    $('p.availability').remove();
                $('p.price').html($('div.woocommerce-variation-price > span.price').html()).append('<p class="availability">'+$('div.woocommerce-variation-availability').html()+'</p>');
                console.log($('input.variation_id').val());
            } else {
                $('p.price').html($('div.hidden-variable-price').html());
                if($('p.availability'))
                    $('p.availability').remove();
                console.log('NULL');
            }
        });
    });
    </script>
    <?PHP

    echo '<p class="price">'.$price.'</p>
    <div class="hidden-variable-price" >'.$price.'</div>';
}

但是,当选择变体时,它会在From：$price下面显示undefined,如下所示：

未定义错误的示例：

因此,如果有人可以帮我确定此错误的原因,以便现在根据已选择的变体显示和更新价格,我们将不胜感激.

解决方法:

更新3

我做了一些重大改进和改进……这个代码版本也解决了默认情况下为变量产品选择变体(摆脱那个“未定义”错误……)并在特定情况下解决了一些其他错误的情况.

Note – The code might not work in some cases: For some themes or some plugins (like German Market for example) that make their own changes, using those hooks or changing the default html structure. In some cases your own customizations can be guilty.

这是新代码：

// Utility function to get the default variation (if it exist)
function get_default_variation( $product ){
    $attributes_count = count($product->get_variation_attributes());
    $default_attributes = $product->get_default_attributes();
    // If no default variation exist we exit
    if( $attributes_count != count($default_attributes) )
        return false;

    // Loop through available variations
    foreach( $product->get_available_variations() as $variation ){
        $found = true;
        // Loop through variation attributes
        foreach( $variation['attributes'] as $key => $value ){
            $taxonomy = str_replace( 'attribute_', '', $key );
            // Searching for a matching variation as default
            if( isset($default_attributes[$taxonomy]) && $default_attributes[$taxonomy] != $value ){
                $found = false;
                break;
            }
        }
        // If we get the default variation
        if( $found ) {
            $default_variaton = $variation;
            break;
        }
        // If not we continue
        else {
            continue;
        }
    }
    return isset($default_variaton) ? $default_variaton : false;
}

add_action( 'woocommerce_before_single_product', 'move_variations_single_price', 1 );
function move_variations_single_price(){
    global $product, $post;

    if ( $product->is_type( 'variable' ) ) {
        // removing the variations price for variable products
        remove_action( 'woocommerce_single_product_summary', 'woocommerce_template_single_price', 10 );

        // Change location and inserting back the variations price
        add_action( 'woocommerce_single_product_summary', 'replace_variation_single_price', 10 );
    }
}

function replace_variation_single_price(){
    global $product;

    // Main Price
    $prices = array( $product->get_variation_price( 'min', true ), $product->get_variation_price( 'max', true ) );
    $active_price = $prices[0] !== $prices[1] ? sprintf( __( 'From: %1$s', 'woocommerce' ), wc_price( $prices[0] ) ) : wc_price( $prices[0] );

    // Sale Price
    $prices = array( $product->get_variation_regular_price( 'min', true ), $product->get_variation_regular_price( 'max', true ) );
    sort( $prices );
    $regular_price = $prices[0] !== $prices[1] ? sprintf( __( 'From: %1$s', 'woocommerce' ), wc_price( $prices[0] ) ) : wc_price( $prices[0] );

    if ( $active_price !== $regular_price && $product->is_on_sale() ) {
        $price = '<del>' . $regular_price . $product->get_price_suffix() . '</del> <ins>' . $active_price . $product->get_price_suffix() . '</ins>';
    } else {
        $price = $regular_price;
    }

    // When a default variation is set for the variable product
    if( get_default_variation( $product ) ) {
        $default_variaton = get_default_variation( $product );
        if( ! empty($default_variaton['price_html']) ){
            $price_html = $default_variaton['price_html'];
        } else {
            if ( ! $product->is_on_sale() )
                $price_html = $price = wc_price($default_variaton['display_price']);
            else
                $price_html = $price;
        }
        $availiability = $default_variaton['availability_html'];
    } else {
        $price_html = $price;
        $availiability = '';
    }
    // Styles ?>
    <style>
        div.woocommerce-variation-price,
        div.woocommerce-variation-availability,
        div.hidden-variable-price {
            height: 0px !important;
            overflow:hidden;
            position:relative;
            line-height: 0px !important;
            font-size: 0% !important;
        }
    </style>
    <?PHP // Jquery ?>
    <script>
    jQuery(document).ready(function($) {
        var a = 'div.wc-availability', p = 'p.price';

        $('select').blur( function(){
            if( '' != $('input.variation_id').val() ){
                if($(a).html() != '' ) $(a).html('');
                $(p).html($('div.woocommerce-variation-price > span.price').html());
                $(a).html($('div.woocommerce-variation-availability').html());
            } else {
                if($(a).html() != '' ) $(a).html('');
                $(p).html($('div.hidden-variable-price').html());
            }
        });
    });
    </script>
    <?PHP

    echo '<p class="price">'.$price_html.'</p>
    <div class="wc-availability">'.$availiability.'</div>
    <div class="hidden-variable-price" >'.$price.'</div>';
}

代码位于活动子主题(或活动主题)的function.PHP文件中.经过测试和工作.

Tested in Woocommerce versions 3.2.x, 3.3.x and 3.4.x too…

笔记：

在以下情况下,代码处理这些特定情况：

>定义默认变体
>所有变化都具有相同的正常价格
>所有变化都具有相同的常规和销售价格

该代码还解决(在某些情况下)或增强：

>更好的可用性html结构和显示(如默认情况下)
>负载上不再显示延迟显示
>没有更多的可用性重复错误
>没有更多可用性“未定义”显示