A way to let users define custom made bound {{if}} statements

Proposals
6

I’d just like to add that there is another way to control the Ember/Handlebars {{#if}} block. Imagine you had a data type called SensorReading that has a value. That value might be null. You could define this:

SensorReading = Ember.Object.extend({
  isTruthy: function() {
    return !Ember.isNone(@get("value"))
  }.property("value")
})

Perhaps this isn’t intended to be public, but as you can see, {{#if}} will look at the value of isTruthy to determine if the block should show or not. So you could have:

{{#if reading}}
  {{value}}
{{/if}}

…where reading is always an object.