link-to-external `targetRouteName` is undefined

Within an engine the link-to-external component is throwing an error when attempting to get the external route. After stepping into the code it looks like the targetRouteName is undefined on the component. So this causes the _getExternalRoute to fail the external route lookup on the provided dependencies.

[rwjblue]

Agreed, submitted https://github.com/dgeb/ember-engines/pull/270 to address. Thanks for tracking it down!

Robert Jackson

– twitter: rwjblue – github: rjackson

On Nov 21, 2016, at 7:49 AM, Nuzsk [e-mail] wrote:

@nathanhammond It’s a bug, because ember-glimmer expects of glimmer-2 availability in 2.9 ember version, but glimmer-2 not included in 2.9 ember.

136f62c http://emberjs.com/blog/2016/10/17/ember-2-9-released.html#toc_ember-js-2-9

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[crodriguez1a]

@trentmwillis Reproducing lead me to the issue. I was simply missing the dependency declaration step in engine.js.

If you miss the app.js config step, it throws:

A dependency mapping for 'externalRoutes.[MyTargetRoute]' must be declared on this engine's parent.

Conversely, missing the engine.js config step surfaces as:

Cannot read property '[MyTargetRoute]' of undefined at Class._getExternalRoute

I’ll go ahead and clean up this thread. Thanks for your help.