How I can filter a array by another array with EmberJs

I'm new with emberjs.

I've two arrays in filterActivities function

filterActivities: (->
activities = @get('activities')     //get ['farmer', 'rancher']
producers = @get('producerTypes')   //get [code: 'farmer', name: 'agriculutor', etc...]

filtering = producers.filter(producers) =>
  activities.contains(producers.get('code')) 
).property('producerTypes.@each')

how I can filter producers by activities using the method filter of ember.

Thanks!!