ember.js - How get parent model from Ember-data -

i`m use ember-data 12 have 2 models, sideloads together:

app.store = ds.store.extend({     revision: 12,     adapter: app.adapter.create() });  app.propose = ds.model.extend({     meeting: ds.belongsto('app.meeting'),        time: ds.attr('string'),  });   app.meeting = ds.model.extend({      name: ds.attr('string'),     proposes: ds.hasmany('app.propose'),   }); 

how me meeting propose model, example calculated field:

app.propose = ds.model.extend({         meeting: ds.belongsto('app.meeting'),            time: ds.attr('string'),          somecalc:function(){            this.get('meeting').get('name') //i want that. not worked         }     }); 

the way is:

app.propose = ds.model.extend({      meeting: ds.belongsto('app.meeting'),         time: ds.attr('string'),       somecalc:function(){         return this.get('meeting.name'); // or whatever operation need in here      }.property('meeting.name')  }); 

but ember data has evolved lot , not work (like this) in beta 2 , later.