Question

I have isolated my problem in this fiddle

http://jsfiddle.net/xYphz/

It uses the root model instead of the parent

edit:
One obvious solution would be to use templates, but there must be a easier way of getting correct context?

http://jsfiddle.net/eHrBR/

Answer 1

Generally you would do something like this:

<!-- ko with: subModel -->
<div data-bind="foreach: items">
    <button data-bind="click: $parent.clickMe">Click me</button>
</div>
<!-- /ko -->

This ensures that the parent context is your subModel. You can, of course, put the with binding on an element rather than use the containerless binding.

http://jsfiddle.net/rniemeyer/xYphz/1/