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December 17, 2015 13:10
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This is untested.
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| Em.View.reopen | |
| classNameBindings: ['testingClass'] | |
| testingClass: (-> | |
| if Em.testing | |
| if testingClass = this.valueBinding?._from?.match(/[\w|\d]+\.[\w|\d]+$/)?[0] | |
| testingClass.replace('context.', '').replace('.', '__') | |
| ).property() |
One problem is, subclasses might override classNameBindings and thereby kill the testingClass. Reopening (monkey-patching) base-classes like this is generally a bit icky, because it causes these kinds of problems.
Thx, @joliss! I forgot that classNames is concatenated property =)
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This exploits the fact that if the function returns false (or null/undefined presumably), the class will simply not be inserted. http://emberjs.com/api/classes/Ember.View.html