Minishop2 корзина

This work can be split into 2 actions:

1. Add hidden element to chunk with product and show it when product is added to cart. You need to use some javascript for it. You can make it with miniShop2 callbacks.

2. Show this element when page is rendered without ajax. I prefer to do it with &prepareSnippet option of pdoTools, but you can do it with your own snippet.

Here is possible solution for your question — modx.pro/solutions/4844-dynamic-buy-button-in-the-shopping-cart/ (on russian)

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As i see on the screenshot, you want just display the icon with total number of products in cart. That is a much easier — just call snippet msMiniCart and change tpl.msMiniCart to something like:

<div id="msMiniCart" [[+total_count:isnot=`0`:then=`class="full"`:else=``]]>
	<div class="empty">
		<h2><i class="glyphicon glyphicon-shopping-cart"></i></h2>
	</div>
	<div class="not_empty">
		<h2><i class="glyphicon glyphicon-shopping-cart"></i> (<strong class="ms2_total_count">[[+total_count]]</strong>)</h2>
	</div>
</div>

There are two divs for empty and not empty cart.