Capitalized properties do not work with #if helper

[glennsl]

When using the #if helper with capitalized properties, the binding it sets up assumes the path is global, resulting in a broken binding.

E.g.:

{{#if view.SubView}}
    ...
{{/if}}

See the JSFiddle http://jsfiddle.net/NnKAN/. When "Destroy view" is clicked, it will break when it tries to unwatch the non-existing global path.

A workaround is obviously to not use capitalized properties, but it is a convention that comes very naturally for locally defined classes since class names are conventionally capitalized. Analogous to the Java/C#-style idiom:

class SomeClass {
    private class MyClass { }
}

And while {{#if MyView}} seems like it should be interpreted as a global path (according to Ember conventions), it is not very intuitive that {{#if view.MyView}} is interpreted as global, ignoring the "view." part of the path entirely.

I've also used this convention for some time now, without issue until this.

[wagenet]

This certainly seems like a bug.

[stefanpenner]

@wagenet it has todo with capital letters triggering a "global" lookup.

[wagenet]

@stefanpenner yeah, that's what I figured. This should only happen if the path chain begins with a capital letter though.

[glennsl]

@wagenet The problem is that the "view." part of the path is discarded because the path should be bound in the context of "view", rather than "this".

[wagenet]

Resolved by #4459.