typescript 如何在角度组件上方声明接口？
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How to declare an interface above an angular component?
提问by Vivien Adnot
I have a component with a method that receives values from a form. I would like to describe the form data with an interface.
我有一个带有从表单接收值的方法的组件。我想用一个界面来描述表单数据。
However, at runtime (ng serve), the compiler tells me that the interface is unknown. (Public property 'friendshipFormModel' of exported class has or is using private name 'IFriendshipFormModel'.)
但是，在运行时（ng serve），编译器告诉我接口未知。( Public property 'friendshipFormModel' of exported class has or is using private name 'IFriendshipFormModel'.)
How can I declare the interfaces properly ? If possible, I would avoid to create a separate file only for this interface, as it belongs to the component.
如何正确声明接口？如果可能，我会避免仅为此接口创建单独的文件，因为它属于组件。
The file:
文件：
import { Component, OnInit, Output, EventEmitter } from '@angular/core';
import * as moment from 'moment';
import { FriendshipModel } from '../models/friendship.model';
interface IDatePickerDateModel {
day: string;
month: string;
year: string;
formatted: string;
momentObj: moment.Moment;
}
interface IFriendshipFormModel {
name: string;
meetingDate?: IDatePickerDateModel;
}
@Component({
selector: 'app-create-friendship',
templateUrl: './create-friendship.component.html',
styleUrls: ['./create-friendship.component.css']
})
export class CreateFriendshipComponent {
@Output() friendshipCreated = new EventEmitter<FriendshipModel>();
friendshipFormModel: IFriendshipFormModel;
constructor() {
this.friendshipFormModel = {
name: '',
meetingDate: null
};
}
createFriendship() {
const friendshipCreation: FriendshipModel = this.frienshipFactory(this.friendshipFormModel);
this.friendshipCreated.emit(friendshipCreation);
}
}
Thank you !
谢谢 ！
回答by Radim K?hler
In this case, just export interfaces as well
在这种情况下，也只需导出接口
export interface IDatePickerDateModel {
day: string;
month: string;
year: string;
formatted: string;
momentObj: moment.Moment;
}
export interface IFriendshipFormModel {
name: string;
meetingDate?: IDatePickerDateModel;
}
