Asp.net mvc &引用;这";在typescript和knockout中使用viewmodel时出现问题
有关更新的代码,请参见下文 我正在尝试将敲除与typescript一起使用,但似乎无法将typescript viewmodel绑定到我的视图。。。似乎我对这个Asp.net mvc &引用;这";在typescript和knockout中使用viewmodel时出现问题,asp.net-mvc,knockout.js,typescript,Asp.net Mvc,Knockout.js,Typescript,有关更新的代码,请参见下文 我正在尝试将敲除与typescript一起使用,但似乎无法将typescript viewmodel绑定到我的视图。。。似乎我对这个有问题,但我不明白为什么 调用Fill方法时,this.UserList未定义 这是我的viewModel: module ViewModels { export class UserViewModel { constructor() { this.UserList = ko.observ
有问题,但我不明白为什么
调用Fill
方法时,this.UserList
未定义
这是我的viewModel:
module ViewModels {
export class UserViewModel {
constructor() {
this.UserList = ko.observableArray<KnockoutObservable<Models.User>>([]);
this.RemoveItem = <(user: KnockoutObservable<Models.User>) => void> this.RemoveItem.bind(this);
this.AcceptItem = <(user: Models.User) => void> this.AcceptItem.bind(this);
this.AddItem = <() => void> this.AddItem.bind(this);
}
public UserList: KnockoutObservableArray<KnockoutObservable<Models.User>>;
public Fill() {
$.ajax({
type: "POST",
url: "/Guest/LoadGuest/",
success: data=> {
$(data).each((index: any, item)=> {
var guest = new Models.User();
guest.FirstName = ko.observable(item.firstName);
guest.LastName = ko.observable(item.lastName);
guest.IsNew = ko.observable(false);
this.UserList.push(ko.observable(guest));
});
}
});
}
public AddItem() {
var guest = new Models.User();
guest.FirstName = ko.observable("");
guest.LastName = ko.observable("");
guest.IsNew = ko.observable(true);
this.UserList.push(ko.observable(guest));
}
public AcceptItem(user: Models.User) {
user.IsNew = ko.observable(false);
}
public RemoveItem(user: KnockoutObservable<Models.User>) {
this.UserList.remove(user);
}
}
}
模块视图模型{
导出类UserViewModel{
构造函数(){
this.UserList=ko.observearray([]);
this.removietem=void>this.removietem.bind(this);
this.AcceptItem=void>this.AcceptItem.bind(this);
this.AddItem=void>this.AddItem.bind(this);
}
公共用户列表:knockoutobserray;
公众填料(){
$.ajax({
类型:“POST”,
url:“/Guest/LoadGuest/”,
成功:数据=>{
$(数据)。每个((索引:任何,项目)=>{
var guest=new Models.User();
guest.FirstName=ko.observable(item.FirstName);
guest.LastName=ko.observable(item.LastName);
guest.IsNew=ko.可观察(假);
this.UserList.push(ko.observable(guest));
});
}
});
}
公共附加项(){
var guest=new Models.User();
guest.FirstName=ko.可观察(“”);
guest.LastName=ko.observable(“”);
guest.IsNew=ko.可观察(真);
this.UserList.push(ko.observable(guest));
}
公共接受项(用户:Models.user){
user.IsNew=ko.可观察(假);
}
public RemoveItem(用户:KnockoutObservable){
this.UserList.remove(用户);
}
}
}
以下是我的看法:
<table>
<thead>
<tr><th>Prénom</th><th>Nom de famille</th></tr>
</thead>
<tbody data-bind="foreach: UserList">
<tr data-bind="if:IsNew">
<td><input type="text" data-bind="text: FirstName" /></td>
<td><input type="text" data-bind="text: LastName" /></td>
<td><a data-bind="click:$parent.AcceptItem">OK</a><a data-bind="click:$parent.RemoveItem">Annuler</a></td>
</tr>
<tr data-bind="if:!IsNew">
<td data-bind="text: FirstName"></td>
<td data-bind="text: LastName"></td>
<td></td>
</tr>
</tbody>
</table>
<a id="AddGuest" data-bind="click:AddItem">Add</a>
@section scripts{
<script src="~/Scripts/models/ModelBase.js"></script>
<script src="~/Scripts/models/User.js"></script>
<script src="~/Scripts/viewmodels/UserViewModel.js"></script>
<script>
var vm = new ViewModels.UserViewModel();
vm.Fill();
ko.applyBindings(vm);
</script>
}
家喻户晓
奥克纳
添加
@节脚本{
var vm=new ViewModels.UserViewModel();
vm.Fill();
ko.应用绑定(vm);
}
这是我的模型:
module Models{
export class User extends Models.ModelBase {
constructor() {
super();
}
public FirstName: KnockoutObservable<string>;
public LastName: KnockoutObservable<string>;
public Age: KnockoutObservable<Age>;
}
export class Age {
public ID: KnockoutObservable<number>;
public Description: KnockoutObservable<string>;
}
}
模块模型{
导出类用户扩展模型.ModelBase{
构造函数(){
超级();
}
public FirstName:KnockoutObservable;
public LastName:KnockoutObservable;
公众年龄:可观察到的淘汰赛;
}
出口阶级年龄{
public ID:KnockoutObservable;
公开描述:可观察到淘汰赛;
}
}
用于帮助目的的新工作代码:
视图模型:
module ViewModels {
export class UserViewModel {
constructor() {
}
public UserList: KnockoutObservableArray<Models.User> = ko.observableArray<Models.User>([]);
public Fill = () => {
$.ajax({
type: "POST",
url: "/Guest/LoadGuest/",
success: data=> {
for (var i = 0; i < data.length; i++) {
var item = data[i];
var guest = new Models.User();
guest.FirstName(item.firstName);
guest.LastName(item.lastName);
guest.Age().Description("Test Age");
guest.IsNew(false);
this.UserList.push(guest);
}
}
});
}
public AddItem = () => {
var guest = new Models.User();
guest.FirstName = ko.observable("");
guest.LastName = ko.observable("");
guest.IsNew(true);
this.UserList.push(guest);
}
public AcceptItem = (user: Models.User) => {
user.IsNew(false);
}
public RemoveItem = (user: Models.User) => {
this.UserList.remove(user);
}
}
}
模块视图模型{
导出类UserViewModel{
构造函数(){
}
公共用户列表:knockoutobserarray=ko.observearray([]);
公众填料=()=>{
$.ajax({
类型:“POST”,
url:“/Guest/LoadGuest/”,
成功:数据=>{
对于(变量i=0;i{
var guest=new Models.User();
guest.FirstName=ko.可观察(“”);
guest.LastName=ko.observable(“”);
guest.IsNew(true);
this.UserList.push(guest);
}
公共AcceptItem=(用户:Models.user)=>{
user.IsNew(false);
}
public removietem=(用户:Models.user)=>{
this.UserList.remove(用户);
}
}
}
型号:
module Models{
export class ModelBase{
constructor() {
this.IsNew = ko.observable(false);
}
public IsNew: KnockoutObservable<boolean>;
}
export interface IUser {
FirstName: KnockoutObservable<string>;
LastName: KnockoutObservable<string>;
Age: KnockoutObservable<Age>;
}
export class User extends Models.ModelBase implements IUser {
constructor() {
super();
this.FirstName = ko.observable("");
this.LastName = ko.observable("");
this.Age = ko.observable(new Age());
}
public FirstName: KnockoutObservable<string>;
public LastName: KnockoutObservable<string>;
public Age: KnockoutObservable<Age>;
}
export class Age {
constructor() {
this.ID = ko.observable(null);
this.Description = ko.observable("");
}
public ID: KnockoutObservable<number>;
public Description: KnockoutObservable<string>;
}
}
模块模型{
导出类模型库{
构造函数(){
this.IsNew=ko.可观察(假);
}
公共是新的:可以观察到淘汰赛;
}
导出接口IUser{
名字:KnockoutObservable;
姓氏:KnockoutObservable;
年龄:可观察到的基因敲除;
}
导出类用户扩展模型。ModelBase实现IUser{
构造函数(){
超级();
this.FirstName=ko.observable(“”);
this.LastName=ko.observable(“”);
this.Age=ko.observable(新时代());
}
public FirstName:KnockoutObservable;
public LastName:KnockoutObservable;
公众年龄:可观察到的淘汰赛;
}
出口阶级年龄{
构造函数(){
this.ID=ko.可观察(空);
本.说明=可观察(“”);
}
public ID:KnockoutObservable;
公开描述:可观察到淘汰赛;
}
}
视图:
家喻户晓
奥克纳
添加
@节脚本{
var vm=new ViewModels.UserViewModel();
vm.Fill();
ko.应用绑定(vm);
}
原因是,当您在fill方法中时,“this”指的是一个新上下文。为了保持“this”的含义,您可以使用self之类的变量进一步引用它-
module ViewModels {
export class UserViewModel {
constructor() {
var self = this;
self.UserList = ko.observableArray<KnockoutObservable<Models.User>>([]);
self.RemoveItem = <(user: KnockoutObservable<Models.User>) => void> this.RemoveItem.bind(this);
self.AcceptItem = <(user: Models.User) => void> this.AcceptItem.bind(this);
self.AddItem = <() => void> this.AddItem.bind(this);
}
public UserList: KnockoutObservableArray<KnockoutObservable<Models.User>>;
public Fill() {
var self = this;
$.ajax({
type: "POST",
url: "/Guest/LoadGuest/",
success: data=> {
$(data).each((index: any, item)=> {
var guest = new Models.User();
guest.FirstName = ko.observable(item.firstName);
guest.LastName = ko.observable(item.lastName);
guest.IsNew = ko.observable(false);
self.UserList.push(ko.observable(guest));
});
}
});
}
}
}
模块视图模型{
导出类UserViewModel{
构造函数(){
var self=这个;
self.UserList=ko.observearray([]);
self.removietem=void>this.removietem.bind(this);
自我接受项
module ViewModels {
export class UserViewModel {
constructor() {
var self = this;
self.UserList = ko.observableArray<KnockoutObservable<Models.User>>([]);
self.RemoveItem = <(user: KnockoutObservable<Models.User>) => void> this.RemoveItem.bind(this);
self.AcceptItem = <(user: Models.User) => void> this.AcceptItem.bind(this);
self.AddItem = <() => void> this.AddItem.bind(this);
}
public UserList: KnockoutObservableArray<KnockoutObservable<Models.User>>;
public Fill() {
var self = this;
$.ajax({
type: "POST",
url: "/Guest/LoadGuest/",
success: data=> {
$(data).each((index: any, item)=> {
var guest = new Models.User();
guest.FirstName = ko.observable(item.firstName);
guest.LastName = ko.observable(item.lastName);
guest.IsNew = ko.observable(false);
self.UserList.push(ko.observable(guest));
});
}
});
}
}
}
module ViewModels {
export class UserViewModel {
UserList: KnockoutObservableArray<KnockoutObservable<Models.User>> = ko.observableArray<KnockoutObservable<Models.User>>([]);
Fill = () => {
$.ajax({
type: "POST",
url: "/Guest/LoadGuest/",
success: data => {
$(data).each((index: any, item)=> {
var guest = new Models.User();
guest.FirstName = ko.observable(item.firstName);
guest.LastName = ko.observable(item.lastName);
guest.IsNew = ko.observable(false);
this.UserList.push(ko.observable(guest));
});
}
});
}
AddItem = () => {
var guest = new Models.User();
guest.FirstName = ko.observable("");
guest.LastName = ko.observable("");
guest.IsNew = ko.observable(true);
this.UserList.push(ko.observable(guest));
}
AcceptItem = (user: Models.User) => {
user.IsNew = ko.observable(false);
}
RemoveItem = (user: KnockoutObservable<Models.User>) => {
this.UserList.remove(user);
}
}
}
this.RemoveItem = <(user: KnockoutObservable<Models.User>) => void> this.RemoveItem.bind(this);
this.AcceptItem = <(user: Models.User) => void> this.AcceptItem.bind(this);
this.AddItem = <() => void> this.AddItem.bind(this);
public UserList: KnockoutObservableArray<KnockoutObservable<Models.User>>;
public UserList = ko.ObservableArray<Modesl.User>([]);
$(data).each((index: any, item)=> {
$.each(data, (index: any, item)=> {
this.UserList.push(ko.observable(guest));
this.UserList.push(guest);
user.IsNew = ko.observable(false);
user.IsNew(false);
<td><input type="text" data-bind="text: FirstName" /></td>
<td><input type="text" data-bind="value: FirstName" /></td>
<tr data-bind="if:!IsNew">
<tr data-bind="ifnot:IsNew">