«Unable to process binding "html: function (){return getCartParam('subtotal') }" Message: getCartParam is not defined»

dmitry_fedyuk · March 22, 2016, 8:50pm

magento/magento2/blob/28f2d03/app/code/Magento/Checkout/view/frontend/web/template/minicart/subtotal/totals.html#L7-L9


<div class="amount">
<span data-bind="html: getCartParam('subtotal')"></span>
</div>

dmitry_fedyuk · March 22, 2016, 8:53pm

Description

The getCartParam function is defined here:

github.com

magento/magento2/blob/28f2d03/app/code/Magento/Checkout/view/frontend/web/js/view/minicart.js#L126-L139


/**
 * Get cart param by name.
 * @param {String} name
 * @returns {*}
 */
getCartParam: function (name) {
    if (!_.isUndefined(name)) {
        if (!this.cart.hasOwnProperty(name)) {
            this.cart[name] = ko.observable();
        }
    }


    return this.cart[name]();
}

But the minicart/subtotal/totals template uses just an uiComponent, not minicart component:

github.com

magento/magento2/blob/28f2d03/app/code/Magento/Checkout/view/frontend/layout/checkout_cart_sidebar_total_renderers.xml#L18-L27


<item name="subtotal" xsi:type="array">
    <item name="children" xsi:type="array">
        <item name="subtotal.totals" xsi:type="array">
            <item name="component" xsi:type="string">uiComponent</item>
            <item name="config" xsi:type="array">
                <item name="template" xsi:type="string">Magento_Checkout/minicart/subtotal/totals</item>
            </item>
        </item>
    </item>
</item>

How to fix

Locate the line:

github.com

magento/magento2/blob/28f2d03/app/code/Magento/Checkout/view/frontend/layout/checkout_cart_sidebar_total_renderers.xml#L21-L21


<item name="component" xsi:type="string">uiComponent</item>

Replace it with the new one:

<item name="component" xsi:type="string">Magento_Checkout/js/view/minicart</item>

dmitry_fedyuk · April 4, 2016, 3:08pm

It has been fixed in the core:
https://github.com/magento/magento2/commit/b58846a1a9013a61dd7be8491e4c4d1495df3d77