我有一个像这样的观点和集合:
window.DmnView = Backbone.View.extend({
template: _.template($("#tmpl_dmnListItem").html()),
events: {
"click .getWhois": "showWhois",
"click .getDomain": "toBasket"
},
initialize: function() {
this.model.bind('change', this.render, this);
this.model.bind('destroy', this.remove, this);
},
render: function() {
return $(this.el)
.attr("class", this.model.get("free") ? "dmnItem green" : this.model.get("checked") ? "dmnItem red" : "dmnItem red loader")
.html(this.template(this.model.toJSON()));
},
remove: function() {
$(this.el).remove();
},
showWhois: function() {
showBoxes(this.model.get("info"));
return false;
},
toBasket: function() {
this.model.toBasket();
console.log("view");
}
});
window.DmnListApp = Backbone.View.extend({
el: $("#regWrap"),
events: {
"keypress #dmnName": "checkAll"
},
initialize: function() {
this.input = this.$("#dmnName");
this.list = this.$("#dmnList");
this.basket = this.$("#dmnBasket");
dmnList.bind('add', this.addOne, this);
dmnList.bind('all', this.render, this);
DmnView.bind('toBasket', this.toBasket, this);
},
render: function() {
},
addOne: function(dmnItem) {
var view = new DmnView({model : dmnItem});
this.list.append(view.render());
},
checkOne: function(name, zone, price, days) {
dmnList.create({name: name, zone: zone, price: price, days: days});
},
checkAll: function(e) {
var name = this.input.val();
if (!name || e.keyCode != 13) return;
if (name == "")
name = "yandex";
dmnList.destroyAll();
var zoneList = dmnList.domainsInfo.Name;
var costList = dmnList.domainsInfo.CostOrder;
var daysList = dmnList.domainsInfo.DaysToProlong;
var parent = this;
$.each(zoneList, function(key, zone) {
parent.checkOne(name, zone, costList[key], daysList[key]);
});
this.input.val("");
},
toBasket: function(){
console.log("collection");
}
});
我希望在调用View的方法toBasket()之后调用Collection的方法toBasket()。为此,我在Collection中执行以下操作:
DmnView.bind('toBasket', this.toBasket, this);
所以,如果这有效,我应该在我的javascript控制台中收到两条消息:
(也许以其他顺序)
但我只在控制台中看到“查看”消息。我做错了什么?
TIA!
答案 0 :(得分:3)
你快到了。在您的收藏视图中,您试图收听DmnView
事件toBasket
,但您如何设置它有点不正确。要侦听事件,您必须绑定到要侦听的特定实例,而不是类。因此,您需要将绑定从initialize
移至addOne
,如下所示:
window.DmnListApp = Backbone.View.extend({
// ...
initialize: function() {
this.input = this.$("#dmnName");
this.list = this.$("#dmnList");
this.basket = this.$("#dmnBasket");
dmnList.bind('add', this.addOne, this);
dmnList.bind('all', this.render, this);
// Remove the DmnView bind here
},
addOne: function(dmnItem) {
var view = new DmnView({model : dmnItem});
// Bind to the DmnView instance here
view.bind('toBasket', this.toBasket, this);
this.list.append(view.render());
},
// ...
});
现在您的集合视图正在侦听事件toBasket
,您需要在DmnView
视图中实际触发该事件。
在Backbone视图中,不会自动触发任何事件,因此您需要自己手动触发它,如下所示:
window.DmnView = Backbone.View.extend({
// ...
toBasket: function() {
this.model.toBasket();
console.log("view");
// Trigger the event
this.trigger('toBasket');
}
});
您现在应该在控制台中看到这两条消息。