Seeking documentation - what operators are allowed?

[stefek99]

I tried searching:

• https://www.google.com/#q=htmlbars+expressions
• https://www.google.com/#q=htmlbars+logic+in+templates
• https://www.google.com/#q=htmlbars+and+or+operators

Found this presentation: http://oscarlodriguez.nl/Labs/htmlbars/#/8

But it doesn't tell me much about the syntax.

My current code:

<div class="flags {{if submission.approved 'hidden'}} {{if submission.rejected 'hidden'}}">

</div>

I want to add class hidden whenever submission has been approved or rejected.

---

I would like to know which operators works out of the box, what is the syntax and how to write own helpers as described here: http://stackoverflow.com/questions/8853396/logical-operator-in-a-handlebars-js-if-conditional

[salzhrani]

Better use a computed property Ember.computed.or

[mixonic]

Or alternatively this excellent addon: https://github.com/jmurphyau/ember-truth-helpers

These helpers are not provided "out of the box", without an addon you would need to create a computed property. There are no immediate plans to add utility helpers like or, but we will be considering it later in the year.

This will be better documented as the Guides for ember are updated around 2.0. I'm closing this as I believe it is actually an issue with Ember's documentation, and unrelated to HTMLBars itself.

[stefek99]

OK, thank you for letting me know.