Thanks for the tutorial.
But the example page doesn't actually work.
https://www.shapeways.com/topics/udesign/tutorials/shoppingca rt/shopexample.html
It doesn't add the items to the cart, just shows an empty cart. Is there something wrong with the code?
Here is the code I have for one of my products, it doesn't add to the cart either.
<form name="Nomad Panohead +5" action="
https://www.shapeways.com/addToCart" method="GET">
<input type="hidden" name="model_id[]" value="387585"/>
<select name="material_id[]" >
<option value='25'> black $145 </option>
<option value='59'> gray $145 </option>
<option value='58'> indigo $145 </option>
<option value='45'> red $145 </option>
<option value='6'> white $130 </option>
</select>
<br/>
<p style="float:right">Shapeways</p>
<input type="image" name="submit" id="add-to-cart" src="../../images/buy-button.jpg" alt="add to cart" value="Checkout"/>
</form>