consider a component helper for dynamic component loading.

[stefanpenner]

{{component nameOfComponentButBound 
                      actions=objectOfActionNameToSubscribedName
                      properties=objectOfPropertiesToBindTo}}

this would be quite handy for building very dynamic pages, that generate various components based on dynamic data.

This may be addon material...

[rwjblue]

I've been using component-lookup:main along with the {{view}} helper. The downside to this is that the view is not torn down when the dynamic property is changed.

I have a local branch where I am work on on making the view helper handle this properly.

[stefanpenner]

Seems like view being bound and tore down would be great. But a component helpers dedicated to component lookups would also be good

[endash]

@rjackson the fix workaround for the view not being torn down/reset on property change (that a bunch of us set upon one day on irc) is to wrap the {{view}} in {{#with}}

[stefanpenner]

I kinda feel like this isn't addon material as it enables better core composition

[stefanpenner]

I would be pretty happy if someone had time to implement this. I will gladly provided feedback and advocate for it

[machty]

This seems related to stuff I've wanted for the link-to helper; right now link-to has half-ass support for dynamically linking to a controller property that contains a changing link name, but you're unfortunately stuck using a fixed number of contexts/models to pass to that target route, so there's no way to elegantly dynamically switching b/w a link to a dynamic route and a non-dynamic route, because one expects a model and the other not.

Perhaps there's a better overall primitive to consider, something like a Render Descriptor, which is best described by example:

SomeController.extend({
  thingToRender: function() {
    if(this.get('wat')) {
      return {
        params: ['link-to', 'articles', 123]
      };
    } else {
      return {
        params: ['link-to', 'about']
      };
    }
  }.property('wat')
});

// something.hbs
{{dynamic-render thingToRender}}

And this of course would extend to free to dynamic component renderings, but should be possible to render anything from a helper to a component to a view to a link.

[igorT]

We used something like this for dynamic input elements. Had to have an observer call render when the bound property changed. @jcollins1991

[machty]

@igorT tell me more, curious

[machty]

I want something like this for Ember (one exists for angular), and the one thing that's missing is easily swappable render parameters for overriding certain fields.

[igorT]

Don't have access to the code anymore, but it was basically a wrapper component that had a type property, which would then instantiate the correct components inside itself and rerender whenever type changed. @jcollins1911

[jcollins1991]

could you elaborate on "the one thing that's missing is easily swappable render parameters for overriding certain fields" @machty ?? We have a few dynamic components in our codebase using slightly different techniques, could explain better if I knew your use case.

[machty]

@jcollins1991 I'm saying if you have {{x-foo somethingFooSpecific=bar}}, even if you made x-foo swappable you don't want to be forced to always provide a value for every last hash option, or in the case of link-to, if you want to make it possible to swap b/w {{link-to 'article' someArticle}} and {{link-to 'about'}}, this isn't doable in the present day because one invocation provides a model someArticle and the other doesn't.

[rlivsey]

Would love to have something like this, I've hacked around it with a ContainerView which extends _Metamorph as discussed in this discourse thread.

[crismali]

@rjackson do you have your branch of this using the views up somewhere? @tonycoco and I don't want to get too deep into this if some of the legwork has already been done.

Attached here is a JSBin trying this out with an Ember View.

NOTE: This does not work... yet.

[stefanpenner]

i think this is a good idea, but not really an issue. If someone wants to follow up with a PR that would be great