[英]Backbone.js - How I can get values from collection?
I am using jquery, backbonejs and underscorejs for my project. 我在我的项目中使用jquery,beltonejs和underscorejs。 My question is, how I can get values from the collection given?
我的问题是,如何从给定的集合中获取价值?
BranchModel BranchModel
define([
'underscore',
'backbone'
], function(_, Backbone) {
var BranchModel = Backbone.Model.extend({});
return BranchModel;
});
BranchCollection BranchCollection
define([
'jquery',
'underscore',
'backbone',
'models/branch/BranchModel'
], function($, _, Backbone, BranchModel){
var BranchCollection = Backbone.Collection.extend({
model: BranchModel,
url: "data.json",
parse: function(data) {
return data;
}
});
return BranchCollection;
});
BranchView BranchView
define(['jquery', 'underscore', 'backbone', 'collections/branch/BranchCollection', 'text!templates/locate-us/mapTemplate.html'], function($, _, Backbone, BranchCollection, mapTemplate) {
var MapView = Backbone.View.extend({
el: $("#page"),
initialize: function() {
this.$el.off();
},
render: function(id) {
var that = this;
this.collection = new BranchCollection();
var formValues = {
id: id
};
this.collection.fetch({
data: formValues,
success: function(collection, response) {
that.$el.html(mapTemplate);
},
error: function() {
console.log("error");
}
});
},
});
return MapView;
});
data.json data.json
[
{
"id": "1",
"name": "KCP KEBAYORAN LAMA, FMT-JKT",
"address":"Jl. Raya Kebayoran Lama No. 22 (PAL VII), Kel. Sukabumi Utara - Kec. Kebon Jeruk, Jakarta Barat 11540",
"latitude":"-6.1773997",
"longitude":"106.8409396"
},
{
"id": "2",
"name": "KK JL. PANJANG, PDI-JKT",
"address":"Jl. Panjang No 37 D, RT 006, RW 011, Kecamatan Kebon Jeruk, Kelurahan Kebon Jeruk, Jakarta Barat",
"latitude":"-6.1632894",
"longitude":"106.7633571"
}
]
Let say, i want to retrieve record id no 1, so I will get this values. 假设我想检索记录ID 1,所以我将获得此值。
"id": "1",
"name": "KCP KEBAYORAN LAMA, FMT-JKT",
"address":"Jl. Raya Kebayoran Lama No. 22 (PAL VII), Kel. Sukabumi Utara - Kec. Kebon Jeruk, Jakarta Barat 11540",
"latitude":"-6.1773997",
"longitude":"106.8409396"
Thanks a lot in advance. 非常感谢。
It seems that you need to fetch models by id
, for this you need to provide a urlRoot
in your model
. 似乎您需要通过
id
来获取模型,为此,您需要在model
提供urlRoot
。 For example : 例如 :
var BranchModel = Backbone.Model.extend({
urlRoot : '/branch'
});
This means that you have to have a urls for branch resource in your Rest API
这意味着您必须在
Rest API
具有分支资源的网址
/branch // returns all branches
/branch/:id // returns a single branch that has this id
And now you can start fetching the model by id
as following 现在,您可以开始通过
id
来获取模型,如下所示
var model = new BranchModel({id:someId});
model.fetch();
Hope this was helpful. 希望这会有所帮助。
You mean this.collection.get("1")
? 您是说
this.collection.get("1")
吗?
If your collection get the values from server properly, you can get the right thing you want with this code above. 如果您的集合正确地从服务器获取了值,则可以通过上面的代码获得所需的东西。
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