Question

我使用angular9。当我单击登录按钮时，我的目的是重定向我如果成功登录到仪表板，否则将我重定向到登录页。当我输入用户名和密码并单击登录按钮时它显示错误如果在表单标签中使用了ngModel，则必须设置name属性或将表单控件定义为 ngModelOptions中的“独立”

<div class="app-body">
    <main class="main d-flex align-items-center">
        <div class="container">
            <div class="row">
            <div class="col-md-8 mx-auto">
                <div class="card-group">
                <div class="card p-4">
                    <div class="card-body">
                    <form>
                        <h1>Login</h1>
                        <p class="text-muted">Sign In to your account</p>
                        <div class="input-group mb-3">
                        <div class="input-group-prepend">
                            <span class="input-group-text"><i class="icon-user"></i></span>
                        </div>
                        <input type="text" class="form-control" placeholder="Username" [(ngModel)]="username" autocomplete="username" required>
                        </div>
                        <div class="input-group mb-4">
                        <div class="input-group-prepend">
                            <span class="input-group-text"><i class="icon-lock"></i></span>
                        </div>
                        <input type="password" class="form-control" placeholder="Password"[(ngModel)]="password" autocomplete="current-password" required>
                        </div>
                        <div class="row">
                        <div class="col-6">
                            <button type="button" (click)=dologin class="btn btn-primary px-4">Login</button>
                        </div>
                        <div class="col-6 text-right">
                            <button type="button" class="btn btn-link px-0">Forgot password?</button>
                        </div>
                        </div>
                    </form>
                    </div>
                </div>
                <div class="card text-white bg-primary py-5 d-md-down-none" style="width:44%">
                    <div class="card-body text-center">
                    <div>
                        <h2>Sign up</h2>
                        <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</p>
                        <button type="button" class="btn btn-primary active mt-3">Register Now!</button>
                    </div>
                    </div>
                </div>
                </div>
            </div>
            </div>
        </div>
    </main>
</div>

代码

/*Decreasing the arrow size*/
::ng-deep .mat-expansion-indicator::after {
  padding: 2px !important; /* decreasing inside space */ 
  border-width: 0px 1px 1px 0px !important; /* decreasing border-width */
}

Answer 1

如果您像这样使用[(ngModel)]，则需要设置[ngModelOptions]="{standalone: true}"

<div class="app-body">
    <main class="main d-flex align-items-center">
        <div class="container">
            <div class="row">
            <div class="col-md-8 mx-auto">
                <div class="card-group">
                <div class="card p-4">
                    <div class="card-body">
                    <form>
                        <h1>Login</h1>
                        <p class="text-muted">Sign In to your account</p>
                        <div class="input-group mb-3">
                        <div class="input-group-prepend">
                            <span class="input-group-text"><i class="icon-user"></i></span>
                        </div>
                        <input type="text" class="form-control" placeholder="Username" [(ngModel)]="username" [ngModelOptions]="{standalone: true}" autocomplete="username" required>
                        </div>
                        <div class="input-group mb-4">
                        <div class="input-group-prepend">
                            <span class="input-group-text"><i class="icon-lock"></i></span>
                        </div>
                        <input type="password" class="form-control" placeholder="Password"[(ngModel)]="password" [ngModelOptions]="{standalone: true}" autocomplete="current-password" required>
                        </div>
                        <div class="row">
                        <div class="col-6">
                            <button type="button" (click)=dologin class="btn btn-primary px-4">Login</button>
                        </div>
                        <div class="col-6 text-right">
                            <button type="button" class="btn btn-link px-0">Forgot password?</button>
                        </div>
                        </div>
                    </form>
                    </div>
                </div>
                <div class="card text-white bg-primary py-5 d-md-down-none" style="width:44%">
                    <div class="card-body text-center">
                    <div>
                        <h2>Sign up</h2>
                        <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</p>
                        <button type="button" class="btn btn-primary active mt-3">Register Now!</button>
                    </div>
                    </div>
                </div>
                </div>
            </div>
            </div>
        </div>
    </main>
</div>

此处提供更多信息：https://angular.io/api/forms/NgModel

如果在表单标签中使用ngModel，则必须在ngModelOptions中设置name属性或将表单控件定义为“独立”

1 个答案: