gistfile1.coffee

### 
  Currently if you want to use a coffee script class for an AngularJS service
  the syntax for the dependency injection is a bit clunky: you have to define
  the dependencies in multiple places
###

class SomeServiceClass
  constructor: (@$dep1, @$dep2)->
    # Initialize the service
  someMethod: ()=>
    # Do something

angular.module('SomeModule', [])
  .factory("SomeService", ['$dep1', '$dep2', ($dep1, $dep2)->new SomeServiceClass($dep1, $dep2)])


###
  This is a lot of typing and prone to error when you change the dependencies
  It would be better if we could make use of the $inject form.
  Currently this is not possible out of the box if using module.factory, since it expects a callable function
  not a "class" function that should be instantiated.
  We can get halfway by creating a helper
###

class SomeService
  @$inject: ['$dep1', '$dep2']         # Dependencies only here and in the constructor
  constructor: (@$dep1, @$dep2)->      # Right next to each other!
    # Initialize the service
  someMethod: ()=>
    # Do something

# This helper wraps the class instantiation in a function and a dependency array
injectionHelper = (klass)->
  klass.$inject.push (args...)-> new klass(args...)

# Now we can just wrap our class in our helper
angular.module('SomeModule', [])
  .factory("SomeService", injectionHelper(SomeServiceClass))

I was thinking the exact same thing last night! Marvelous ! ...from my mobile.

…

On Mar 9, 2012 1:08 AM, "Vojta Jina" < ***@***.***> wrote: We decided to change service -> provider as it actually registers a provider for service. And service takes a constructor function (class). Will get into master soon, here is the build on CI server + related docs: http://ci.angularjs.org/job/angular.js-vojta/226/artifact/build/pkg/0.10.7-248b9c91/angular-0.10.7-248b9c91.js http://ci.angularjs.org/job/angular.js-vojta/226/artifact/build/pkg/0.10.7-248b9c91/docs-0.10.7-248b9c91/api/angular.module.AUTO.$provide So now, you can do: ``` coffee module.service 'SomeService', SomeServiceClass ``` --- Reply to this email directly or view it on GitHub: https://gist.github.com/2003785