我想在Backbone中创建一个基本模型类,以便我所有其他模型都扩展这个基类。在基类的某个时刻,我希望能够通过扩展类访问数据集。
例如,假设我的基类是:
var baseModel = Backbone.Model.extend({
someFunc: function() {
// This guy needs to operate on 'protected' array set my the extending model
}
}, {
protected: [] // this is to be set by the extending model
});
var extendingModel = baseModel.extend({
}, {
protected: ['id', 'username'];
});
这可以实现吗?
答案 0 :(得分:0)
很棒的问题!
我建议你研究Backbone的extend方法,它与Underscore的扩展不同。
extend中的第二个参数是"静态属性"所以你无法通过实例方法访问它。
Here是工作小提琴,它将提供基本结构。
源代码
var BaseModel = Backbone.Model.extend({
someFunc: function() {
// This guy needs to operate on 'protected' array set my the extending model
$('.container').append(JSON.stringify(this.protected || 'something'));
}
}, {
// this is to be set by the extending model
});
var ExtendingModel = BaseModel.extend({
protected: ['id', 'username']
}, {
});
var test = new ExtendingModel();
test.someFunc();
var ExtendingModel2 = BaseModel.extend({
protected: ['anotherProp', 'ABC']
}, {
});
test1 = new ExtendingModel2();
test1.someFunc();
test3 = new BaseModel();
test3.someFunc();