所有 我正在开发一个存储我的多媒体目录的应用程序,我是这样的JSON集合:
{ "_id" : ObjectId( "5142f55394474e2aac000001" ),
"contentType" : "binary/octet-stream",
"length" : 2732376,
"chunkSize" : 262144,
"uploadDate" : Date( 1363342677601 ),
"metadata" : {
"TIT2" : "Chase The Blues (Cameron McVey Remix)",
"TPE1" : "Terranova",
"TRCK" : "1/13",
"TALB" : "!K7",
"TPOS" : "1/1",
"TDRC" : "2000-06",
"TCON" : [
"Electronica",
"Trip-Hop" ],
"COMM" : [
"Chillout",
"Love",
"German",
"Berlin",
"2000s",
"Female Vocalists",
"Male Vocalists" ],
"TMED" : "CD",
"TMOO" : "Chill",
"TDOR" : "2000-06",
"TSO2" : "Various Artists",
"TPE2" : "Various Artists",
"TCMP" : "1",
"TSOP" : "Terranova",
"TIT1" : "Electronica",
"TPUB" : "Sinedín Music",
"TLAN" : "eng",
"TYER" : [
"2000" ],
},
"md5" : "617401af615ac0c6cb1dee9a3f1b99e6",
"origin" : "Chase The Blues.109eb5ab5105a1caa505a26657f7f9a8.mp3",
"evolution" : null,
"insertDate" : Date( 1336662308000 ),
"tagSource" : "MusicBrainz",
"mediainfo" :
{ "Format" : "MPEG Audio",
"Format version" : "Version 1",
"Format profile" : "Layer 3",
"Duration" : "3mn 47s",
"Bit rate mode" : "Constant",
"Bit rate" : "96.0 Kbps",
"Channel(s)" : "1 channel",
"Sampling rate" : "44.1 KHz",
"Compression mode" : "Lossy",
"Stream size" : "2.60 MiB (100%)",
"Language" : "English"
}
}
所以,正如您所看到的,文档中有“metadata”和“mediainfo”数组 在models.js中,在客户端,我重写了像这样的模型解析函数
var Audio_Model = Backbone.Model.extend({
idAttribute: "_id",
url: 'AudioModel',
urlRoot: 'AudioModel' ,
parse: function(response) {
// Check if response includes some nested collection data...
if (_.has(response, 'metadata')){
// Check if this model has a property called metadata
if (!_.has(this, 'metadata')) { // It does not...
// So instantiate a collection and pass in raw data
this.metadata = new Audio_Collection_Metadata(response.metadata);
} else {
// It does, so just reset the collection
this.metadata.reset(response.metadata);
}
delete response.metadata;
}
// Check if response includes some nested collection data...
if (_.has(response, 'mediainfo')){
// Check if this model has a property called mediainfo
if (!_.has(this, 'mediainfo')) { // It does not...
// So instantiate a collection and pass in raw data
this.mediainfo = new Audio_Collection_Mediainfo(response.mediainfo);
} else {
// It does, so just reset the collection
this.mediainfo.reset(response.mediainfo);
}
delete response.mediainfo;
}
return response;
}
});
所以我创建了两个单独的'元数据'和'mediainfo'集合 我的问题是如何在html模板中呈现'元数据'和'mediainfo',因为在'mediainfo'和'metadata'集合中,键,值不是固定的,在'元数据'中,一些键是值的数组和数组中的项目数不固定
我为这两个集合创建了backbone.marionette.itemview和compositeview,但我不知道如何渲染
Plase,有人有解决方案吗? 最诚挚的问候
答案 0 :(得分:0)
最后我自己用数据规范化修复了这个问题,这是采用的新的mongoose模式:
var TagSchema = new mongoose.Schema({
value : {type : String, default: '', required: true}
});
var MetadataSchema = new mongoose.Schema({
name : {type: String, default: '', required : true},
values: [TagSchema]
});
var MediainfoSchema = new mongoose.Schema({
name : {type: String, default: ''},
value: {type: String, default: ''}
});
var StreamSchema = new mongoose.Schema({
_id: mongoose.Schema.ObjectId,
TIT2: {type : String, default: '', required: true},
metadata: [MetadataSchema],
mediainfo:[MediainfoSchema]
});
因此,使用CollectionView和CompositeView的序列,我可以浏览整个模型 希望这可以帮助某人