TypeError for empty flex attribute on md-button

[julienpa]

I get this error since updating to rc6 this morning:

TypeError: Cannot read property 'warn' of undefined at validateAttributeUsage
(angular-material.js:3374:15)
[...]
at angular-material.js:1567:20 <md-button flex="" ng-click="switchAction()"
aria-label="Change server" class="md-primary">

I guess it is because the flex attribute is empty? Is it now required to have a value?

[julienpa]

Actually it happens even with a value for the flex attribute.
Here is my code:

md-dialog.about-dialog(aria-label="Dialog with app info")
 md-toolbar
 .md-toolbar-tools
 h2(flex) {{ appData.name }}
 md-button.md-icon-button(ng-click="closeDialog()", aria-label="Close dialog")
 md-icon close
 md-dialog-content.md-padding
 .md-body-2 Version: {{ appData.version }}
 .md-body-2 Release date: {{ appData.releaseDat }}
 // (more info) ... 
 .change-server(layout)
 md-button.md-primary(flex="grow", ng-click="switchAction()", aria-label="Change server").
 Change server

The error is declared for the last button, in the .change-server(layout) wrapper

[julienpa]

If found that the error is here:
https://github.com/angular/material/blob/master/src/core/services/layout/layout.js#L364

@ThomasBurleson what could cause $log to be undefined? I use this service in my Angular app, but the injections are separated between my app and Angular Material module, right?

[hoopyfrood]

+1

[ethanmick]

Just ran into this as well. Just upgraded to RC6. Same place as @julienpa. Thanks!

[ThomasBurleson]

Fixes are pending with #6082

[ThomasBurleson]

@julienpa - the $log was not being properly injected into validateAttributeUsage( ). Yet I am still confused as to why you are getting that error when it only triggers for <md-button flex> or <fieldset flex> and those directives never use attributeWithoutValue( ).

[julienpa]

@ThomasBurleson actually the issue is not linked with attributeWithoutValue( ), I was wrong about the "no value" thing. It's just because I am using a md-button with flex directive, which uses validateAttributeUsage( ) and this one had the injection problem.
Glad to know about the fixes!