Angular TypeScript类日期属性返回一个字符串
我在typeScript中有一个模型类:Angular TypeScript类日期属性返回一个字符串,angular,typescript,primeng,Angular,Typescript,Primeng,我在typeScript中有一个模型类: export class Season { ID: number; Start: Date; } 这是我的组件: export class SeasonsComponent{ seasons: Season[]; selectedSeason: Season; constructor( private configService: ConfigService, private notificationsServic
export class Season {
ID: number;
Start: Date;
}
这是我的组件:
export class SeasonsComponent{
seasons: Season[];
selectedSeason: Season;
constructor(
private configService: ConfigService,
private notificationsService: NotificationsService,
) { }
ngOnInit(): void {
this.selectedSeason = new Season();
this.getSeasons();
}
getSeasons(): void {
this.configService.getSeasons().subscribe(
response => {
this.seasons= response.Data;
// Data: { Id: 1, Start: '2018-01-01T00:00:00' }
},
error => {
this.notificationsService.show("error", error.error.error, error.error.error_description);
}
);
}
selectSeason(season: Season): void {
this.selectedSeason = season;
}
<p-dataList [value]="seasons">
<ng-template let-season pTemplate="item">
<div class="ui-g ui-fluid text-capitalize item-list" (click)="selectSeason(season)"
[class.selected]="season === selectedSeason">
<div class="ui-md-3 text-center">
<div class="pt-4"><h5>{{ season.ID }}</h5></div>
</div>
<div class="ui-g-12 ui-md-9">
<div class="ui-g">
<div class="ui-g-2 ui-sm-6">Start: </div>
<div class="ui-g-10 ui-sm-6">{{ season.Start | date: 'MMM d' }}</div>
</div>
</div>
</div>
</ng-template>
</p-dataList>
<form class="bg-white p-4" *ngIf="selectedSeason">
<div class="row">
<div class="form-group col">
<label>Start</label>
<p-calendar name="startDate" [required]="true"
[ngModel]="selectedSeason?.Start"
[inline]="true"
[style]="{'max-width': '85%'}">
</p-calendar>
</div>
</div>
</form>
}
模板:
export class SeasonsComponent{
seasons: Season[];
selectedSeason: Season;
constructor(
private configService: ConfigService,
private notificationsService: NotificationsService,
) { }
ngOnInit(): void {
this.selectedSeason = new Season();
this.getSeasons();
}
getSeasons(): void {
this.configService.getSeasons().subscribe(
response => {
this.seasons= response.Data;
// Data: { Id: 1, Start: '2018-01-01T00:00:00' }
},
error => {
this.notificationsService.show("error", error.error.error, error.error.error_description);
}
);
}
selectSeason(season: Season): void {
this.selectedSeason = season;
}
<p-dataList [value]="seasons">
<ng-template let-season pTemplate="item">
<div class="ui-g ui-fluid text-capitalize item-list" (click)="selectSeason(season)"
[class.selected]="season === selectedSeason">
<div class="ui-md-3 text-center">
<div class="pt-4"><h5>{{ season.ID }}</h5></div>
</div>
<div class="ui-g-12 ui-md-9">
<div class="ui-g">
<div class="ui-g-2 ui-sm-6">Start: </div>
<div class="ui-g-10 ui-sm-6">{{ season.Start | date: 'MMM d' }}</div>
</div>
</div>
</div>
</ng-template>
</p-dataList>
<form class="bg-white p-4" *ngIf="selectedSeason">
<div class="row">
<div class="form-group col">
<label>Start</label>
<p-calendar name="startDate" [required]="true"
[ngModel]="selectedSeason?.Start"
[inline]="true"
[style]="{'max-width': '85%'}">
</p-calendar>
</div>
</div>
</form>
我得到:
console.log(typeof this.selectedSeason.Start); // object
我可以预先将其转换,但使用类型的目的是什么
这是否与我的类没有完全实例化或其他原因有关
谢谢我喜欢服务返回转换后的数据,这样您的服务就可以
getSeasons()
{
this.httpClient.get(...).map(result=>{
//Not return the result, instead return result.Data
//Moreover, we change all the result.Data to return in Start, a Date Object
return result.Data.map(d=>{
Id:d.Id,
Start:New Date(d.Start)
}
}
}
那么您的组件订阅如下
this.configService.getSeasons().subscribe(
response => {
this.seasons= response; //<--just response
},
error => {
this.notificationsService.show("error", error.error.error, error.error.error_description);
}
);
this.configService.getSeasons().subscribe(
响应=>{
this.seasures=响应;//{
this.notificationsService.show(“error”,error.error.error,error.error.error\u说明);
}
);
Season实例是在哪里创建的?您没有发布相关代码,即创建Season实例并设置其Start属性值的代码。请记住,在运行时,不再有TypeScript。它只是JavaScript。JavaScript可以为任何变量赋值。好的,这就是问题所在。我假设this.selectedSeason=season足以确保属性保持我在类中声明的类型。因此,每次选择新“season”时,我都必须实际创建一个对象(使用new?)?不。你必须确保传递给SeleccionalTemporada的季节(应该是一个季节)确实是一个季节。修复错误,不要绕过它。但是因为你不会告诉我们这个对象是在哪里创建和填充的,我们无法告诉你如何最好地修复代码。抱歉。我已经用完整的代码更新了帖子。