当我带回一个数组(使用'foreach'绑定)时,我无法弄清楚为什么我的 ko.mapping 工作正常,但是当它是一个对象时(使用'with'绑定)它不起作用一点也不。我没有得到任何错误,但我也没有得到任何结果:
function EventViewModel() {
var self = this;
self.events = ko.observableArray([]);
self.singleEvent = ko.observable({});
self.getEvents = function () {
self.events.removeAll();
$.ajax("/api/Event/", {
contentType: "application/json",
success: function (allData) {
ko.mapping.fromJS(allData, null, self.events);
}
});
}
self.getSingleEvent = function () {
self.events.removeAll();
$.ajax("/api/Event/?guid=435a666b-7913-417f-a474-dfb33d74c2ec", {
contentType: "application/json",
success: function (allData) {
ko.mapping.fromJS(allData, null, self.singleEvent);
}
});
}
self.getEvents();
self.getSingleEvent();
};
window.vm = new EventViewModel();
ko.applyBindings(vm);
我可以将 getSingleEvent() 的结果推入一个数组并再次使用“foreach”,如下所示:
ko.mapping.fromJS([allData], null, self.singleEvent);
并使 singleEvent 成为 observableArray,这确实有效,但对我来说似乎是个骗子。
getEvents() 中的 JSON 如下所示:
[{"EventId":4,"Year":2013,"StartDate":"2013-08-28T00:00:00","EndDate":"2013-09-02T00:00:00","EventGuid":"435a666b-7913-417f-a474-dfb33d74c2ec"},{"EventId":5,"Year":2013,"StartDate":"2013-06-07T00:00:00","EndDate":"2013-06-09T00:00:00","EventGuid":"615014ba-15cd-4371-8d43-04d66eb558a2"}]
来自 getSingleEvent() 的 JSON 如下所示:
{"EventId":4,"Year":2013,"StartDate":"2013-08-28T00:00:00","EndDate":"2013-09-02T00:00:00","EventGuid":"435a666b-7913-417f-a474-dfb33d74c2ec"}