没有用于表单控制的值访问器 [英] No value accessor for form control

问题描述

我正在使用Angular2-rc5，当前在登录页面上遇到错误.我正在尝试制作一个表单，但是控制台抛出异常，告诉我即使我在init上创建它也找不到我的formcontroll.知道为什么我会收到此错误吗?

I'm using Angular2-rc5, and I'm currently getting an error on my login page. I'm trying to make a form but the console throws exceptions telling me that it can't find my formcontrolls even though I create it on init. Any idea why I'm getting this error?

登录组件

import { Component, OnInit } from '@angular/core';
import { FormGroup, FormControl, FormBuilder, Validators } from '@angular/forms';
import { LoginService } from './login.service';
import { User } from '../../models/user';

@Component({
    selector: 'login',
    providers: [LoginService],
    templateUrl: './login.component.html',
    styleUrls: ['./login.component.css']
})
export class LoginComponent implements OnInit {
    private loginForm: FormGroup; // our model driven form
    private submitted: boolean; // keep track on whether form is submitted
    private events: any[] = []; // use later to display form changes

    constructor(private fb: FormBuilder, private ls:LoginService){
    }
    ngOnInit(){
        this.loginForm = new FormGroup({
            email: new FormControl('',[<any>Validators.required]),
            password: new FormControl('', [<any>Validators.required, <any>Validators.minLength(6)]),
            rememberMe: new FormControl()
        });
    }
    save(model: User, isValid: boolean) {
        console.log("Test");
        console.log(model, isValid);
    }
    // Login in user
    login(email: any, password: any){
        this.ls.login(email, password, false); 
    }
}

Page.html

<div id="login-page">
    <div class="form-wrapper">
        <form class="login-form" [formGroup]="loginForm" novalidate (ngSubmit)="save(loginForm.value, loginForm.valid)">
            <div >
                <div class="input-field col s12 center">
                    <p class="center login-form-text">Login page</p>
                </div>
            </div>
            <div >
                <div class="input-field col s12">
                    <input id="email" type="email"> 
                    <label class="center-align" for="email" formControlName="email">Email</label>
                </div>
            </div>
            <div >
                <div class="input-field col s12">
                    <input id="password" type="password"> 
                    <label class="center" for="password" formControlName="password">Password</label>
                </div>
            </div>
            <div >
                <div class="input-field col s12 m12 l12 login-text">
                    <input id="remember-me" type="checkbox" formControlName="rememberMe">
                    <label for="remember-me">Remember me</label>
                </div>
            </div>
            <div >
                <div class="input-field col s12">
                    <ahref="index.html">Login</a>
                </div>
            </div>
            <div >
                <div >
                    <p><a href="page-register.html">Register Now!</a></p>
                </div>
                <div >
                    <p><a href="page-forgot-password.html">Forgot password ?</a></p>
                </div>
            </div>
        </form>
    </div>
</div>

例外

例外:未捕获(承诺):错误:./LoginComponent中的错误 类LoginComponent-内联模板:13:45引起原因:无值 名称为"email" .....

EXCEPTION: Uncaught (in promise): Error: Error in ./LoginComponent class LoginComponent - inline template:13:45 caused by: No value accessor for form control with name: 'email'.....

推荐答案

您正在将formControlName添加到标签而不是输入中.

You are adding the formControlName to the label and not the input.

您有这个:

<div >
  <div class="input-field col s12">
    <input id="email" type="email"> 
    <label class="center-align" for="email" formControlName="email">Email</label>
  </div>
</div>

尝试使用此:

<div >
  <div class="input-field col s12">
    <input id="email" type="email" formControlName="email"> 
    <label class="center-align" for="email">Email</label>
  </div>
</div>

也更新其他输入字段.

这篇关于没有用于表单控制的值访问器的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！