如何将USER ID从模板传递给函数以获取角度为5的值

Question

我想在点击编辑时将我的用户ID传递给服务。

 <tr *ngFor="let visit of visits" style="border-top: 1px solid black">
          <td>{{ visit?.ID }}</td>
          <td>{{ visit?.username }}</td>
            <td>{{ visit?.height }}</td>
            <td>{{ visit?.weight }}</td>
            <td>{{ visit?.patientnote }}</td>
            <td>{{ visit?.doctornote }}</td>
            <td>{{ visit?.nursenote }}</td>
            <td><button mat-raised-button color="accent" (click)="edit()">EDIT</button></td>
            <td><button mat-raised-button color="warn" (click)="delete()">DEL</button></td>

Answer 1

如果你想在url中传递值，你必须使用Angular Routing，如下所示

import {Component} from '@angular/core';
import {Component} from '../Module/Component';
import {ListComponent} from "../Module/ListComponent";

export const ApplicationRoutes = [
{ path: 'Rpt/:id', component: Component },//allows to pass id in route
{ path: 'RptList', component: ListComponent },
{ path: '', component:ListComponent }
];

如果不了解路由，您可以检查rounting：https://angular.io/guide/router

下面的

将起作用

<button mat-raised-button color="accent" 
     (click)="edit(visit?.ID)">EDIT</button>

在ts文件函数中需要带参数，你可以使arugment可选

edit(id?:any)
{}

Answer 2

你必须传递id作为函数的参数：

<td><button mat-raised-button color="accent" (click)="edit(visit.ID)">EDIT</button></td>