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About Features

As of Ember 1.0.0 we have started using a new release process. At this point all newly added features will be behind a feature flag. This allows changes being made to be enabled or disabled at runtime for each application.

This processes is explained in more detail here.

How do I use them?

There are a couple different ways to enable a given feature.

Declare an ENV.FEATURES global before requiring Ember:

ENV = {FEATURES: {'link-to': true}};

Set the Ember.FEATURES value after initialization:

Ember.FEATURES['link-to'] = true;

Feature Flags

  • container-renderables

    Components and helpers registered on the container can be rendered in templates via their dasherized names. (E.g. {{helper-name}} or {{component-name}})

    Added in #3329.

  • query-params

    Add query params support to the ember router. You can now define which query params your routes respond to, use them in your route hooks to affect model loading or controller state, and transition query parameters with the link-to helper and the transitionTo method.

    Added in #3182.

  • link-to-non-block

    Add a non-block form link-to helper. E.g {{link-to "About us" "about"}} will have "About us" as link text and will transition to the "about" route. Everything works as with the block form link-to.

    Added in #3443.

  • ember-routing-didTransition-hook

    Add didTransition hook to the router that gets triggered for each route transition.

    Added in #3452.

  • propertyBraceExpansion

    Adds support for brace-expansion in dependent keys, observer, and watch properties. (E.g. Em.computed.filter('list.@each.{propA,propB}', filterFn) which will observe both propA and propB).

    Added in #3538.

  • reduceComputedSelf

    Dependent keys may refer to @self to observe changes to the object itself, which must be array-like, rather than a property of the object. This is mostly useful for array proxies.

    Added in #3365.

  • string-humanize

    Replaces underscores with spaces, and capitializes first character of string. Also strips _id suffixes. (E.g. 'first_name'.humanize() // 'First name')

    Added in #3224

  • ember-runtime-sortBy

    Adds sortBy to Ember.Enumerable. Allows sorting an enumerable by one or more properties.

    Added in #3446

  • em-o

    Adds Em.O function as a shorthand for Ember.Object.create.

    Added in #3370

  • ember-testing-wait-hooks

    Allows registration of additional functions that the wait testing helper will call to determine if it's ready to continue.

    Added in #3433