在Backbone.js中工作,我想在模型的方法中设置一个模型属性。这似乎应该很简单,但我无法让它工作。
目前我拥有的是这个。我正在尝试在调用'performSearch'时设置'results'属性:
var SearchModel = Backbone.Model.extend({
performSearch: function(str) {
$.get('/' + str, function(results) {
console.log(data);
this.set("results", data);
});
},
});
这给了我以下错误:
Uncaught TypeError: Object #<Object> has no method 'set'
我做错了什么?
答案 0 :(得分:5)
问题是this
没有绑定到ajax回调中的模型对象。
您可以通过执行以下操作来解决此问题:
var SearchModel = Backbone.Model.extend({
performSearch: function(str) {
//assign to local variable, so that it is accesible in callback's closure
var self = this;
$.get('/' + str, function(results) {
// are you sure it should be data?
console.log(data);
self.set("results", data);
});
},
});
另一种方法是将回调函数显式绑定到model:
var SearchModel = Backbone.Model.extend({
performSearch: function(str) {
//assign to local variable, so that it is accesible in callback's closure
$.get('/' + str, (function(results) {
// are you sure it should be data?
console.log(data);
this.set("results", data);
}).bind(this)); //binding here
},
});