Mike and I demo an Ajaxified version of the Depot application in the
Rails Studio. Part of the demo is a cart in the sidebar which updates
when you add a product to it. As well as updating the div, it also
highlights the most recently added link item. Right now, we do it with:
<script language="JavaScript">
function flash_cart(request) {
var id = request.getResponseHeader('X-Item-Id');
new Effect.Highlight('cart_item_' + id,
{ startcolor: "#66bb66",
endcolor: "#114411" });
}
</script>
<%= link_to_remote 'Add to Cart',
:url => {:action => 'add_to_cart', :id => product},
:update => 'cart',
:complete => 'flash_cart(request)'
%>
The controlled sends down item_id as a header when the object gets
added:
def add_to_cart
product = Product.find(params[:id])
item = @cart.add_product(product)
if request.xhr?
headers['X-Item-Id'] = item.object_id
render(:action => "display_cart", :layout => false)
else
redirect_to(:action => 'index')
end
end
I'd really like to use visual_effect() instead of having my own
flash_cart method, but I can't think of a way of giving it the
element ID dynamically. Am I missing something?
Cheers
Dave
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