我有以下模型：
当我调用 this.store.find('history');
调用 http:://www.example.com/api/histories/ 并返回此 JSON 响应：
{
"tracks":[
{
"id":83,
"title":"Untitled",
"length":148,
"artist_ids":[
],
"album_ids":[
]
},
{
"id":85,
"title":"You want it",
"length":262,
"artist_ids":[
],
"album_ids":[
]
},
{
"id":81,
"title":"Untitled",
"length":133,
"artist_ids":[
],
"album_ids":[
]
},
{
"id":78,
"title":"Untitled",
"length":345,
"artist_ids":[
],
"album_ids":[
]
},
{
"id":80,
"title":"Untitled",
"length":225,
"artist_ids":[
],
"album_ids":[
]
},
{
"id":73,
"title":"Untitled",
"length":366,
"artist_ids":[
],
"album_ids":[
]
},
{
"id":77,
"title":"Untitled",
"length":161,
"artist_ids":[
],
"album_ids":[
]
},
{
"id":82,
"title":"Untitled",
"length":384,
"artist_ids":[
],
"album_ids":[
]
},
{
"id":76,
"title":"Untitled",
"length":245,
"artist_ids":[
],
"album_ids":[
]
},
{
"id":79,
"title":"Untitled",
"length":479,
"artist_ids":[
],
"album_ids":[
]
},
{
"id":75,
"title":"Untitled",
"length":328,
"artist_ids":[
],
"album_ids":[
]
},
{
"id":84,
"title":"Untitled",
"length":259,
"artist_ids":[
],
"album_ids":[
]
},
{
"id":74,
"title":"Untitled",
"length":329,
"artist_ids":[
],
"album_ids":[
]
}
],
"albums":[
],
"artists":[
],
"histories":[
{
"id":1382220844,
"time_played":"2013-10-20 00:14:04",
"user_id":null,
"track_id":83
},
{
"id":1382220581,
"time_played":"2013-10-20 00:09:41",
"user_id":null,
"track_id":85
},
{
"id":1382220449,
"time_played":"2013-10-20 00:07:29",
"user_id":null,
"track_id":81
},
{
"id":1382220103,
"time_played":"2013-10-20 00:01:43",
"user_id":null,
"track_id":78
},
{
"id":1382219877,
"time_played":"2013-10-19 23:57:57",
"user_id":null,
"track_id":80
},
{
"id":1382219511,
"time_played":"2013-10-19 23:51:51",
"user_id":null,
"track_id":73
},
{
"id":1382219351,
"time_played":"2013-10-19 23:49:11",
"user_id":null,
"track_id":77
},
{
"id":1382218968,
"time_played":"2013-10-19 23:42:48",
"user_id":null,
"track_id":82
},
{
"id":1382218723,
"time_played":"2013-10-19 23:38:43",
"user_id":null,
"track_id":76
},
{
"id":1382218243,
"time_played":"2013-10-19 23:30:43",
"user_id":null,
"track_id":79
},
{
"id":1382217915,
"time_played":"2013-10-19 23:25:15",
"user_id":null,
"track_id":75
},
{
"id":1382217657,
"time_played":"2013-10-19 23:20:57",
"user_id":null,
"track_id":84
},
{
"id":1382217327,
"time_played":"2013-10-19 23:15:27",
"user_id":null,
"track_id":74
},
{
"id":1382217195,
"time_played":"2013-10-19 23:13:15",
"user_id":null,
"track_id":81
},
{
"id":1382216849,
"time_played":"2013-10-19 23:07:29",
"user_id":null,
"track_id":78
}
]
}
现在 Store.History 和 Store.Track 记录都被存储（见下面的截图）
但是，当我从 Store.History 检查记录时，“track”属性返回 null
我检查了 Store.Track 记录，这些记录包含与 JSON 结果中相同的 ID
编辑：根据要求，这些是我的模型：
var attr = DS.attr,
belongsTo = DS.belongsTo,
hasMany = DS.hasMany;
Shoutzor.Album = DS.Model.extend({
artist: belongsTo('artist'),
title: attr('string'),
cover: attr('string')
});
Shoutzor.Artist = DS.Model.extend({
name: attr('string'),
profileimage: attr('string')
});
Shoutzor.User = DS.Model.extend({
name: attr('string'),
firstname: attr('string'),
email: attr('string'),
joined: attr('date'),
last_active: attr('date')
});
Shoutzor.Track = DS.Model.extend({
title: attr('string'),
length: attr('number'),
artist: hasMany('artist'),
album: hasMany('album'),
/* Convert the length in seconds to a string like '01:55' */
convertedLength: function() {
var sec_num = parseInt(this.get('length'), 10); // don't forget the second parm
var hours = Math.floor(sec_num / 3600);
var minutes = Math.floor((sec_num - (hours * 3600)) / 60);
var seconds = sec_num - (hours * 3600) - (minutes * 60);
if (hours < 10 && hours > 0) {hours = "0"+hours;}
if (minutes < 10 && minutes > 0) {minutes = "0"+minutes;}
if (seconds < 10) {seconds = "0"+seconds;}
var time = ((hours != 0) ? hours + ':' : '') + ((minutes != 0) ? minutes +':' : '') + seconds;
return time;
}.property('length')
});
Shoutzor.History = DS.Model.extend({
track: belongsTo('track'),
user: belongsTo('user'),
time_played: attr('date'),
print_time: function() {
var d = new Date(this.get('time_played'));
var hours = (d.getHours() < 10 ? "0" : '') + d.getHours(),
minutes = (d.getMinutes() < 10 ? "0" : '') + d.getMinutes(),
seconds = (d.getSeconds() < 10 ? "0" : '') + d.getSeconds();
return hours + ":" + minutes + ":" + seconds;
}.property('time_played')
});
任何帮助是极大的赞赏。