我正在处理一个登录表单,如果用户输入了无效的凭据,我们想要将电子邮件和密码字段标记为无效,并显示一条消息,说明登录失败。在可观察回调中,我该如何设置这些字段为无效?
模板:
<form #loginForm="ngForm" (ngSubmit)="login(loginForm)" id="loginForm">
<div class="login-content" fxLayout="column" fxLayoutAlign="start stretch">
<md-input-container>
<input mdInput placeholder="Email" type="email" name="email" required [(ngModel)]="email">
</md-input-container>
<md-input-container>
<input mdInput placeholder="Password" type="password" name="password" required [(ngModel)]="password">
</md-input-container>
<p class='error' *ngIf='loginFailed'>The email address or password is invalid.</p>
<div class="extra-options" fxLayout="row" fxLayoutAlign="space-between center">
<md-checkbox class="remember-me">Remember Me</md-checkbox>
<a class="forgot-password" routerLink='/forgot-password'>Forgot Password?</a>
</div>
<button class="login-button" md-raised-button [disabled]="!loginForm.valid">SIGN IN</button>
<p class="note">Don't have an account?<br/> <a [routerLink]="['/register']">Click here to create one</a></p>
</div>
</form>
登录方式:
@ViewChild('loginForm') loginForm: HTMLFormElement;
private login(formData: any): void {
this.authService.login(formData).subscribe(res => {
alert(`Congrats, you have logged in. We don't have anywhere to send you right now though, but congrats regardless!`);
}, error => {
this.loginFailed = true; // This displays the error message, I don't really like this, but that's another issue.
this.loginForm.controls.email.invalid = true;
this.loginForm.controls.password.invalid = true;
});
}
除了将输入无效标志设置为true外,我还尝试将email.valid
标志设置为false,并将loginForm.invalid
设置为true。但这些都不能使输入显示其无效状态。
setErrors
方法。提示:你应该在组件文件中添加所需的验证器。此外,使用 ngModel 和响应式表单有特定的原因吗? - developer033