Angular.js: Support expressions on ng-switch-when

Created on 14 Dec 2013 · 5Comments · Source: angular/angular.js

I tried myself to do this and I was able to implement it but I couldn't make the test to work. Please refer to this Stackoverflow question: http://stackoverflow.com/questions/20482653/testing-angularjs-scope-variables

misc core breaking change feature

Source

leog

Most helpful comment

This is not going to happen, the main reason is that allowing expressions into ngSwitchWhen will requiere a watch on the expression, and this defeats the entire purpose of ngSwitchWhen

What about interpolated values which are resolved once (and not watched)? E.g.:

<p ng-switch="error.code">
  <p ng-switch-when="{{errors.someErrorCode1}}"></p>
  <p ng-switch-when="{{errors.someErrorCode2}}"></p>
  ...
  <p ng-switch-default></p>
</p>

I have string constants in my errors object and want to use those strings to match against with ng-switch-when. Is this not possible? I don't think ng-messages has support for a default.

adamreisnz on 31 Dec 2015

👍3

All 5 comments

This is not going to happen, the main reason is that allowing expressions into ngSwitchWhen will requiere a watch on the expression, and this defeats the entire purpose of ngSwitchWhen

lgalfaso on 18 Jan 2015

This is not going to happen, the main reason is that allowing expressions into ngSwitchWhen will requiere a watch on the expression, and this defeats the entire purpose of ngSwitchWhen

What about interpolated values which are resolved once (and not watched)? E.g.:

<p ng-switch="error.code">
  <p ng-switch-when="{{errors.someErrorCode1}}"></p>
  <p ng-switch-when="{{errors.someErrorCode2}}"></p>
  ...
  <p ng-switch-default></p>
</p>

I have string constants in my errors object and want to use those strings to match against with ng-switch-when. Is this not possible? I don't think ng-messages has support for a default.

adamreisnz on 31 Dec 2015

👍3

Yeah, would be awesome to have just once-resolved values. Similar use-case for me.