EmberFire Adding relationship from different model - ember.js

Question

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Ember : 1.13.11
Ember Data : 1.13.15
Firebase : 2.3.2
EmberFire : 1.6.3
jQuery : 1.11.3
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I've got two endpoints in my firebase app. /employees and /subjects. In my ember app I want to add subjects to an employee (employees/$id/subjects). The problem is, I don't know how to load all my subjects from /subjects so I can add them to my array.
This is my routes:
Router.map(function() {
this.route('dashboard');
this.route('employees', function() {
this.route('employee', { path: '/:id'});
});
});
And this is my model
export default Ember.Route.extend({
model(params) {
return this.store.findRecord('employee', params.id);
}
});
I've tried various things to get this to work, creating a subroute this.route(employee, function(){ this.route('subjects') }, loading a second model in my employee model, none of which has worked. I'm new to ember so I might have gotten some things mixed up. Any helps is appreciated.
EDIT
Employee model
export default DS.Model.extend({
name: DS.attr('string'),
position: DS.attr('string'),
accessoryPosition: DS.attr('string'),
education: DS.attr('string'),
experience: DS.attr('string'),
imgUrl: DS.attr('string'),
subjects: DS.hasMany('subject', {async: true})
});
Subject Model
export default DS.Model.extend({
name: DS.attr('string')
});
To maybe describe my intentions a bit better, here is the flow I want:
User selects an employee, employees info is shown along with a list of subjects assigned to that employee. But I also need the full list of subjects available, if I want to assign a new subject to an employee. Hence my question. Hope this makes sense

Answer 1

Okay, then you can do this in your Route:
export default Ember.Route.extend({
model(params) {
return Ember.RSVP.hash({
employee: this.store.findRecord('employee', params.id),
subjects: this.store.findAll('subject')
});
}
});
then in your template:
{{#each employee.subjects as |subject|}}
{{!these are your employee subjects}}
{{subject.name}}
{{/each}}
{{#each subjects as |subject|}}
{{!these are all your subjects}}
{{subject.name}}
{{/each}}