Angular: Add `ngOutletContext` attribute to `NgTemplateOutlet` similar to TS

[luisvt]

Please add ngOutletContext attribute to NgTemplateOutlet.

In TS version you can see how this attribute is being implemented:

https://github.com/angular/angular/blob/2.0.0-rc.5/modules/%40angular/common/src/directives/ng_template_outlet.ts#L38

this attribute allows to change the context of the outlet, which allows to use the component internal scope
instead the scope of the current component

<template [ngTemplateOutlet]="templateRefExpression"
          [ngOutletContext]="objectExpression">
</template>

I already create a similar directive into ng_bootstrap, this directive is BsTemplateOutlet you can find the source code here:

https://github.com/dart-league/ng_bootstrap/blob/develop/lib/components/template_outlet/bs_template_outlet.dart

[matanlurey]

@ferhatb What do you think of this change? Make sense?

[ferhatb]

Hi Luis makes sense to add. Would you like to contribute and send us PR?

[luisvt]

I could translate code from TS version, however the unit test will fail.

[matanlurey]

That's fine, we can tackle the unit test (working on our new testing story now).

[luisvt]

Ok, I'll do it at night

[matanlurey]

👍

[luisvt]

I created the pull request #50, please take a look

[rvaleev]

What should be done to move this forward?

[MichaelRFairhurst]

Please ping me if this gets solved, its something we could analyze.

[matanlurey]

No action in ~4 months.

Closing for now as we don't have any internal requirements and no PR was merged.

[luisvt]

How can we create grid or typeahead component without it?

[dentra]

it is really needed

[zoechi]

It's not difficult to create your own MyTemplateOutlet directive from NgTemplateOutlet and add a ngOutletContext.
I did it but couldn't find the time to polish it enough for a pull request (add tests, ...)