Extend templates with dataextensions/modules content - SilverStripe 3.4
<p>I could add extra functionality to a dataobject if I extend it with a dataextension. For example I've got an Item which gets extended from a module with stock keeping functionality. Let's say the Item also gets's extended form a few other modules.</p>

<p>After the extension with the stock keeping functionality, I'd like to display the availability of the item in the frontend, for example with a green/red dot. How can I get this dot's markup inside my template for the detail page(ItemPage.ss) and the include (Item.ss) for the overview page of items <strong>without</strong> overwriting the whole template. Just adding this one part, like the way I extend a function on my base class?</p>