没有将“exportAs"设置为“ngForm"的指令 [英] There is no directive with “exportAs” set to “ngForm”

问题描述

我已经包含了 FormsModule 但它显示了我的错误.

没有将exportAs"设置为ngForm"的指令

我的 Login.component.ts :-

import { Component } from '@angular/core';import { Http, Response , RequestOptions , Headers , URLSearchParams } from '@angular/http';从@angular/forms"导入{FormsModule}；@成分({templateUrl: './login.component.html'})导出类 LoginComponent {apiRoot : String = "http://httpbin.org";//搜索代码从这里开始//数据 = 字符串;构造函数(私有http:Http){}提交(值){让 name = value.name;让密码 = value.password;让 url = `${this.apiRoot}/post`;this.http.post(url, {name:name,password:password}).subscribe(res => console.log(res.json()));console.log('提交');}}

我的 login.module.ts :-

import { BrowserModule } from '@angular/platform-b​​rowser';从'@angular/core' 导入 { NgModule };从'jqwidgets-scripts/jqwidgets-ts/angular_jqxgrid'导入{jqxGridComponent}；import { AppComponent } from './../../app.component';从 '@angular/forms' 导入 { FormsModule, ReactiveFormsModule , FormGroup};从'@angular/http'导入{HttpModule}；import { LoginComponent } from './login.component';@NgModule({声明: [AppComponent、jqxGridComponent、LoginComponent],进口:[浏览器模块，表单模块，Http模块，响应式表单模块],提供者:[]，引导程序:[AppComponent]})导出类 LoginModule { }

我的 login.component.html

<form (ngSubmit)="onSubmit(heroForm.value)" #heroForm="ngForm"><input type="text" name="name" [(ngModel)]="name"/><input type="password" name="password" [(ngModel)]="password"/><br/><input type="checkbox" name="vehicle" value="Bike" [(ngModel)]="vehicle">我有一辆自行车
<input type="checkbox" name="vehicle" value="Car" >我有一辆车<br><button type="submit">发送</button></表单>

我尝试制作新的 angular 项目，它适用于主要的 app.module.ts、app.component.ts 和 app.component.html 文件，但是当我尝试使用登录文件时，它不起作用.

我是 Angular-5 的新手，所以在我们创建新的登录模块时我可能遗漏了一些东西.

-

应用组件:-

app.component.ts从@angular/core"导入 { Component, OnInit };从@angular/router"导入{路由器，导航结束}；@成分({//tslint:disable-next-line选择器:'身体'，模板:'<路由器插座></路由器插座>'})导出类 AppComponent 实现 OnInit {构造函数(私有路由器:路由器){}ngOnInit() {this.router.events.subscribe((evt) => {if (!(evt instanceof NavigationEnd)) {返回;}window.scrollTo(0, 0)});}}

app.module.ts

import { BrowserModule } from '@angular/platform-b​​rowser';从@angular/platform-b​​rowser/animations"导入 { BrowserAnimationsModule };从'@angular/core' 导入 { NgModule };从@angular/common"导入 { LocationStrategy, HashLocationStrategy };从@angular/forms"导入 { FormsModule, ReactiveFormsModule };从'@angular/http'导入{HttpModule}；从 './app.component' 导入 { AppComponent };//导入容器进口 {完整布局组件，简单布局组件} 来自'./容器';const APP_CONTAINERS = [完整布局组件，简单布局组件]//导入组件进口 {AppAside 组件，应用面包屑组件，应用页脚组件，应用头组件，应用侧边栏组件，AppSidebarFooterComponent,AppSidebarFormComponent,AppSidebarHeaderComponent,AppSidebarMinimizerComponent,APP_SIDEBAR_NAV来自'./components';const APP_COMPONENTS = [AppAside 组件，应用面包屑组件，应用页脚组件，应用头组件，应用侧边栏组件，AppSidebarFooterComponent,AppSidebarFormComponent,AppSidebarHeaderComponent,AppSidebarMinimizer 组件，APP_SIDEBAR_NAV]//导入指令进口 {AsideToggleDirective，NAV_DROPDOWN_DIRECIVES，替换指令，SIDEBAR_TOGGLE_DIRECTIVES} 来自'./指令';const APP_DIRECTIVES = [AsideToggleDirective，NAV_DROPDOWN_DIRECIVES，替换指令，SIDEBAR_TOGGLE_DIRECTIVES]//导入路由模块import { AppRoutingModule } from './app.routing';//导入第 3 方组件从 'ng2-charts/ng2-charts' 导入 { ChartsModule };从'ngx-bootstrap/dropdown'导入{BsDropdownModule}；从 'ngx-bootstrap' 导入 { ModalModule };从'ngx-bootstrap/tabs'导入{TabsModule}；@NgModule({进口:[浏览器模块，浏览器动画模块，应用路由模块，图表模块，Http模块，表单模块，反应形式模块，BsDropdownModule.forRoot(),ModalModule.forRoot(),TabsModule.forRoot(),],声明: [应用组件，...APP_CONTAINERS,...APP_COMPONENTS,...APP_指令],提供者:[{提供:位置策略，useClass: HashLocationStrategy}],引导程序:[ AppComponent ]})导出类 AppModule { }

我创建的登录页面位于查看文件夹下.来自 app 的路径.

views/pages/login.component.html视图/页面/login.component.ts视图/页面/login.module.ts

解决方案

这是 node_module 的错误.

我刚刚更新了节点包，它正在运行.因为 @angular/core 没有正确导入.

因此，为此我在 sublime-3 中安装了 typescript 包，安装后显示错误，

import { NgModule } from '@angular/core';从 '@angular/forms' 导入 { FormsModule, ReactiveFormsModule , FormGroup};

因此，在获取节点文件时出现了一些问题.

I have included FormsModule but it showing me error.

There is no directive with "exportAs" set to "ngForm" 

My Login.component.ts :-

import { Component } from '@angular/core';
import { Http, Response , RequestOptions , Headers , URLSearchParams } from '@angular/http';
import {FormsModule} from '@angular/forms';

@Component({
    templateUrl: './login.component.html'
})

export class LoginComponent {
    apiRoot : String = "http://httpbin.org";
    // search code starts here

    // data = string;
    constructor(private http: Http){

    }
    onSubmit(value){

        let name = value.name;
        let password = value.password;
        let url = `${this.apiRoot}/post`;
        this.http.post(url, {name:name,password:password}).subscribe(res => console.log(res.json()));
        console.log('submit');

    }


}

My login.module.ts :-

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';

import { jqxGridComponent } from 'jqwidgets-scripts/jqwidgets-ts/angular_jqxgrid';
import { AppComponent } from './../../app.component';
import { FormsModule, ReactiveFormsModule , FormGroup} from '@angular/forms';
import { HttpModule } from '@angular/http';
import { LoginComponent } from './login.component';

@NgModule({
  declarations: [
      AppComponent, jqxGridComponent, LoginComponent
  ],
  imports: [
    BrowserModule,
    FormsModule,
    HttpModule,
    ReactiveFormsModule

  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class LoginModule { }  

my login.component.html

<div class="">
  <form (ngSubmit)="onSubmit(heroForm.value)" #heroForm="ngForm">
      <input type="text" name="name" [(ngModel)]="name" />
      <input type="password" name="password" [(ngModel)]="password" />
      <br/>
       <input type="checkbox" name="vehicle" value="Bike" [(ngModel)]="vehicle"> I have a bike<br>
         <input type="checkbox" name="vehicle" value="Car" > I have a car<br>
      <button type="submit">Send</button>
  </form>
</div>

I tried with making new angular project and it works with main app.module.ts, app.component.ts and app.component.html files but when I tried with login files it didn't works.

I'm new to Angular-5 so may be I'm missing something when we are creating new login modules.

Edit :-

App components :-

app.component.ts 

import { Component, OnInit } from '@angular/core';
import { Router, NavigationEnd } from '@angular/router';

@Component({
  // tslint:disable-next-line
  selector: 'body',
  template: '<router-outlet></router-outlet>'
})
export class AppComponent implements OnInit {
  constructor(private router: Router) { }

  ngOnInit() {
    this.router.events.subscribe((evt) => {
      if (!(evt instanceof NavigationEnd)) {
        return;
      }
      window.scrollTo(0, 0)
    });
  }
}

app.module.ts

import { BrowserModule } from '@angular/platform-browser';
import { BrowserAnimationsModule } from '@angular/platform-browser/animations';
import { NgModule } from '@angular/core';
import { LocationStrategy, HashLocationStrategy } from '@angular/common';
import { FormsModule, ReactiveFormsModule } from '@angular/forms';
import { HttpModule } from '@angular/http';
import { AppComponent } from './app.component';
// Import containers
import {
  FullLayoutComponent,
  SimpleLayoutComponent
} from './containers';

const APP_CONTAINERS = [
  FullLayoutComponent,
  SimpleLayoutComponent
]

// Import components
import {
  AppAsideComponent,
  AppBreadcrumbsComponent,
  AppFooterComponent,
  AppHeaderComponent,
  AppSidebarComponent,
  AppSidebarFooterComponent,
  AppSidebarFormComponent,
  AppSidebarHeaderComponent,
  AppSidebarMinimizerComponent,
  APP_SIDEBAR_NAV
} from './components';

const APP_COMPONENTS = [
  AppAsideComponent,
  AppBreadcrumbsComponent,
  AppFooterComponent,
  AppHeaderComponent,
  AppSidebarComponent,
  AppSidebarFooterComponent,
  AppSidebarFormComponent,
  AppSidebarHeaderComponent,
  AppSidebarMinimizerComponent,
  APP_SIDEBAR_NAV
]

// Import directives
import {
  AsideToggleDirective,
  NAV_DROPDOWN_DIRECTIVES,
  ReplaceDirective,
  SIDEBAR_TOGGLE_DIRECTIVES
} from './directives';

const APP_DIRECTIVES = [
  AsideToggleDirective,
  NAV_DROPDOWN_DIRECTIVES,
  ReplaceDirective,
  SIDEBAR_TOGGLE_DIRECTIVES
]

// Import routing module
import { AppRoutingModule } from './app.routing';

// Import 3rd party components
import { ChartsModule } from 'ng2-charts/ng2-charts';
import { BsDropdownModule } from 'ngx-bootstrap/dropdown';
import { ModalModule } from 'ngx-bootstrap';
import { TabsModule } from 'ngx-bootstrap/tabs';

@NgModule({
  imports: [
    BrowserModule,
    BrowserAnimationsModule,
    AppRoutingModule,
    ChartsModule,
    HttpModule,
    FormsModule,
    ReactiveFormsModule,
    BsDropdownModule.forRoot(),
    ModalModule.forRoot(),
    TabsModule.forRoot(),
  ],
  declarations: [
    AppComponent,
    ...APP_CONTAINERS,
    ...APP_COMPONENTS,
    ...APP_DIRECTIVES
  ],
  providers: [{
    provide: LocationStrategy,
    useClass: HashLocationStrategy
  }],
  bootstrap: [ AppComponent ]
})
export class AppModule { }

My Login Page is which I have created files is under view folder. Path from app.

views/pages/login.component.html views/pages/login.component.ts views/pages/login.module.ts

解决方案

It was node_module's error.

I have just updated the node packages and it's working. Because @angular/core was not importing properly.

So, for that I have install typescript package in sublime-3 and after install it was showing error in,

import { NgModule } from '@angular/core';
import { FormsModule, ReactiveFormsModule , FormGroup} from '@angular/forms';

So, It was some problem while fetching node files.

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