createRecord with ember-data + ember-data-django-rest-adapter - django

Question

I'm currently working on creating an ember application using ember/ember-data/ember-data-django-rest-adapter with Django backend.
I'm having issue creating record when there's belongsTo and hasMany relationship going on.
I currently have this code:
App.Article = DS.Model.extend({
title: attr(),
description: attr(),
authors: hasMany('author'),
category: belongsTo('page'),
slug: attr(),
content: attr(),
articleContent: Ember.computed.alias("content"),
published: attr(),
publish_from: attr(),
isScheduled: function() {
return moment().isBefore(moment(this.get('publish_from')));
}.property('publish_from'),
articlePublishDate: function() {
return moment(this.get('publish_from')).format('MMMM Do YYYY');
}.property('publish_from'),
articlePublishTime: function() {
return moment(this.get('publish_from')).format('h:mm a');
}.property('publish_from'),
//content_type: belongsTo('content_type', { async: true }),
content_type: attr()
});
App.Page = DS.Model.extend({
title: attr(),
description: attr(),
pageContent: attr(null, {
key: 'content'
}),
templateFile: attr(null, {
key: 'template'
}),
slug: attr(),
tree_path: attr(),
tree_parent: belongsTo('page'),
site: attr()
});
App.Author = DS.Model.extend({
name: attr(),
slug: attr(),
description: attr(),
text: attr(),
email: attr(),
photo: attr(),
user: belongsTo('user'),
});
// create article
App.ArticleCreateController = Ember.ObjectController.extend({
editMode: false,
allAuthors: function() {
return this.store.find('author');
}.property(),
allPages: function() {
return this.store.find('page');
}.property(),
actions: {
save: function(session) {
var self = this;
var article = this.get('model');
var newArticle = this.store.createRecord('article', {
content_type: "19",
content: article.get('articleContent'),
description: article.get('description'),
publish_from: article.get('publish_from'),
published: article.get('published'),
slug: article.get('slug'),
title: article.get('title')
});
this.store.find('page', 3).then(function(page) {
newArticle.set('category', page);
});
newArticle.save();
}
}
});
All I really want to do is POST data like this to apiRoot/articles/ (along with other attributes, but those are working the way they should)
authors: [1,3,5], // hasMany
category: 3 // belongsTo
But when I make a POST request, category returns as null for some reason. All I want to extract from it is just the id itself. Also, I have no clue how to extract the array of authors. I tried posting the data, and it tells me something about it needing to be 'App.Author'.

Answer 1

First, at the current time you need a fork of ember-data because async create is currently broken (as it's a promise and the internal serializer won't wait for it to resolve).
Pull down this branch, do a npm install + grunt test to build the adapter. Also you need to use the forked build of ember-data in that branch'es test lib directory (until ember-data pulls in the fix for this)
https://github.com/toranb/ember-data-django-rest-adapter/tree/asyncBelongsToHasManyWIP
Then inside your controller you can do something like this to "create" the customer and appointment (notice -async belongsTo/hasMany relationship)
App.Customer = DS.Model.extend({
name: DS.attr('string'),
appointments: DS.hasMany('appointment', { async: true})
});
App.Appointment = DS.Model.extend({
details: DS.attr('string'),
customer: DS.belongsTo('customer', { async: true})
});
var customer = {
name: 'foobar'
}
this.store.createRecord('customer', customer).save().then(function(persisted) {
var appointment = {
details: 'test',
customer: persisted
}
return self.store.createRecord('appointment', appointment).save().then(function(apt) {
persisted.get('data').appointments.pushObject(apt);
router.transitionTo('index');
});
});