there is no possibillty to access root context of template once you change the context with looping (e.g. each) more info . However there is a posibillity to access previous context with '../'
body = HandlebarsTemplates['contents/present_content']({
view:{
registryName: 'foo',
data: {items: {x: 'x'}}
}
})
check http://handlebarsjs.com/#paths for more info