在virtmart joomla中使用隐藏的表单值

Question

我想使用隐藏的表单值＆＃34; virtuemart_product_price＆＃34; administrator \ components \ com_virtuemart \ helpers \ calculationh.php 此表单已添加到 components \ com_virtuemart \ views \ cart \ tmpl \ default.php ..

<form method="post" class="product js-recalculate" action="/ecomm/index.php/component/virtuemart/">


<div class="addtocart-bar">

        <!-- <label for="quantity229" class="quantity_box">Quantity: </label> -->
        <span class="quantity-box">
            <input type="hidden" class="quantity-input js-recalculate" name="quantity[]" value="1"/>
        </span>


        <span class="addtocart-button">
            <input type="submit" name="addtocart" class="addtocart-button" value="Pick free" title="Pick free" />               </span>

        <div class="clear"></div>
    </div>
    <input type="hidden" name="virtuemart_product_price" value="5" />
    <input type="hidden" class="pname" value="Custom Item"/>
    <input type="hidden" name="option" value="com_virtuemart"/>
    <input type="hidden" name="view" value="cart"/>
    <noscript><input type="hidden" name="task" value="add"/></noscript>
    <input type="hidden" name="virtuemart_product_id[]" value="<?php echo virtuemart_product_id;?>"/>
       </form>

我试图获得，但我无法找到解决方案。