ember.js JSONAPIAdapter with hasMany - ember.js

Question

I try to use a {json:api}-JSON with ember.js (1.13.3) and ember-data (1.13.4) by using the DS.JSONAPIAdapter.
The JSON:
{
"data": [
{
"type": "altersgruppe",
"id": "1",
"attributes": {
"name": "ALTER_21_24",
"tarifbeitraege": [
{
"type": "tarifbeitrag",
"id": "1",
"attributes": {
"name": "REISE",
"beitrag": "12.70",
"proergaenzung": "7,00",
"gesamtbeitrag": "25.99"
}
},
{
"type": "tarifbeitrag",
"id": "2",
"attributes": {
"name": "KRANKEN",
"beitrag": "25,70",
"proergaenzung": "7,00",
"gesamtbeitrag": "25.99"
}
}
]
}
},
{
"type": "altersgruppe",
"id": "2",
"attributes": {
"name": "ALTER_25_30",
"tarifbeitraege": [
{
"type": "tarifbeitrag",
"id": "3",
"attributes": {
"name": "REISE",
"beitrag": "29,70",
"proergaenzung": "7,00",
"gesamtbeitrag": "25.99"
}
},
{
"type": "tarifbeitrag",
"id": "4",
"attributes": {
"name": "KRANKEN",
"beitrag": "28,70",
"proergaenzung": "7,00",
"gesamtbeitrag": "30.99"
}
}
]
}
}
]
}
The models:
App.Altersgruppe = DS.Model.extend({
name: DS.attr('string'),
tarifbeitraege: DS.hasMany('tarifbeitrag', {async: true})
});
App.Tarifbeitrag = DS.Model.extend({
altersgruppe: DS.belongsTo('altersgruppe'),
name: DS.attr('string'),
beitrag: DS.attr('string'),
proergaenzung: DS.attr('string'),
gesamtbeitrag: DS.attr('string')
});
When I used the ember-inspector to see the data only the model "altersgruppe" has records. The model "tarifbeitrag" has no records.
So why?
The adapter:
App.AltersgruppeAdapter = DS.JSONAPIAdapter.extend({
namespace: REST_ADAPTER_NAMESPACE,
shouldBackgroundReloadRecord: function(store, snapshot){
return false;
}
});
It seems to me that the "hasMany"-Relationship does not work. How to fix that. Any ideas (JSON wrong? Model wrong). Thank you.

Answer 1

Because of Mike1o1's tip to read the {json:api}-Spec again and I made the
decision to changed the structure of the JSON to this:
{
"data": [
{
"type": "altersgruppe",
"id": "1",
"attributes": {
"name": "ALTER_21_24"
},
"relationships": {
"tarifbeitraege": {
"data": [
{
"type": "tarifbeitrag",
"id": "1"
},
{
"type": "tarifbeitrag",
"id": "2"
}
]
}
}
},
{
"type": "altersgruppe",
"id": "2",
"attributes": {
"name": "ALTER_25_30"
},
"relationships": {
"tarifbeitraege": {
"data": [
{
"type": "tarifbeitrag",
"id": "3"
},
{
"type": "tarifbeitrag",
"id": "4"
}
]
}
}
}
],
"included": [
{
"type": "tarifbeitrag",
"id": "1",
"attributes": {
"name": "REISE",
"beitrag": "25,70",
"proergaenzung": "7,00",
"gesamtbeitrag": "25.99"
}
},
{
"type": "tarifbeitrag",
"id": "2",
"attributes": {
"name": "KRANKEN",
"beitrag": "25,70",
"proergaenzung": "7,00",
"gesamtbeitrag": "25.99"
}
},
{
"type": "tarifbeitrag",
"id": "3",
"attributes": {
"name": "REISE",
"beitrag": "29,70",
"proergaenzung": "7,00",
"gesamtbeitrag": "25.99"
}
},
{
"type": "tarifbeitrag",
"id": "4",
"attributes": {
"name": "KRANKEN",
"beitrag": "28,70",
"proergaenzung": "7,00",
"gesamtbeitrag": "30.99"
}
}
]
}
This works with the DS.JSONAPIAdapter. Now in the ember-inspector I can see that the model "tarifbeitrag" has also records.

Answer 2

At first glance this doesn't look like a valid json-api response. tarifbeitraege should be a linked relationship, not embedded in the actual attributes of the data type. I don't believe json-api supports embedded attributes like that. Take a look at compound documents part of the spec for an example of what your json output should be.