css - How to do an inline comparison condition to apply a class in emblem? -

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i want this:

li class={aproperty=="alpha":active} plain text

where using property, , seeing if matches value, opposed simple boolean.

what valid emblem syntax this? syntax docs show boolean property conditions, , doing example results in browser errors , compile errors.

unfortunately handlebars , emblem both work on booleans. disagree design decision, have jump through hoops add helpers handle them, , syntax isn't clean.

afaik, way via bool property.

in controller:

apropertyalpha: function() {    return this.get('aproperty')==='alpha';  }.property('aproperty')

in template:

li class={apropertyalpha:active}

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