最近,我更新了我的angular2项目到2.0.2版本,当我使用输入标签时,我得到了以下错误,
错误,
Uncaught (in promise): Error: Error in app/articles/articles.html:42:20 caused by:
ngModel cannot be used to register form controls with a parent formGroup directive. Try using
formGroup's partner directive "formControlName" instead. Example:
<div [formGroup]="myGroup">
<input formControlName="firstName">
</div>
In your class:
this.myGroup = new FormGroup({
firstName: new FormControl()
});
我的模板,
<div *ngIf = 'showform'>
<form class="nobottommargin" [formGroup]="form" (ngSubmit)="onSubmit(form.value)" novalidate="novalidate">
<div class="form-process"></div>
<div class="col_full">
<label for="template-contactform-name">Title</label>
<input type="text" formControlName="articletitle" placeholder="Title" class="sm-form-control required" aria-required="true">
</div>
<div class="clear"></div>
<div class="col_full">
<label for="template-contactform-message">Description</label>
<textarea class="required sm-form-control" formControlName="articledescription" placeholder="Description" rows="6" cols="30" aria-required="true"></textarea>
</div>
<div class="clear"></div>
<div class="col_full">
<label >Tags</label>
<tag-input [ngModel]="['@item']"
[autocompleteItems]="['Item1', 'item2', 'item3']"
[autocomplete]="true">
</tag-input>
<div class="col_full">
<button class="button button-3d nomargin" type="submit" id="template-contactform-submit" name="template-contactform-submit" value="submit">Save</button>
</div>
</form>
</div>
我的组件,
this.form = new FormGroup({
articletitle: new FormControl(''),
articledescription: new FormControl(''),
tags: new FormControl('')
});
ngModule.ts,
import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { FormsModule, ReactiveFormsModule } from '@angular/forms';
import { Category } from './categories/category';
import { Login } from './login/login';
import { Mainapp } from './components/app.component';
import { Topics } from './topics/topics';
import { SignUp } from './signup/signup';
import { Articles } from './articles/articles';
import { Article } from './article/article';
import { User } from './user/user';
import { HttpModule } from '@angular/http';
import { RouterModule } from '@angular/router';
import { TagInputModule } from 'ng2-tag-input';
import { App } from './tags/tags';
// import { TagInputModule } from 'ng2-tag-input';
// import {Ng2TagsInputModule} from 'ng2-tagsinput';
@NgModule({
imports: [ BrowserModule, ReactiveFormsModule,FormsModule,TagInputModule,HttpModule,
RouterModule.forRoot([
{ path: '', component:Login },
{ path: 'login', component:Login },
{ path: 'signup', component: SignUp },
{ path: 'categories', component: Category },
{ path: 'topics/:id', component: Topics },
{ path: 'articles/:id', component: Articles },
{ path: 'article/:id', component: Article },
{ path: 'user', component: User },
{ path: 'app', component: App },
])],
declarations: [ Mainapp,App,Login,SignUp,Category,Topics,Articles,Article,User ]
,bootstrap: [ Mainapp ]
})
export class AppModule { }
我不知道是什么错误,谁能建议帮助
我知道这是一个老问题,但是今天早上我遇到了同样的问题,终于找到了解决方案,我注意到你比我错过了同样的事情。
你有三个字段/输入(articletitle, articledescription和标签),但你有一个formControlName指令只有其中两个(标题和articledescription,但不是标签)。
如果你的一个字段缺少formControlName指令而他有一个ngModel属性(这是tag-input的情况),你会得到这个错误。
在我的情况下,我遇到,我所有的字段都有一个ngModel 和一个formControlName指令,除了一个只有ngModel。我把它添加到输入,它是ok的。
所以,在你的标签输入上添加formControlName指令,它应该工作得很好。