Angular 模板分析错误:Can';t绑定到';formGroup';因为它不是';t'的已知属性;表格';
我有一个角度路由,在其中一个组件中,我有一个简单的登录表单,并在模板中提供formGroup,它显示了上面的错误 步骤:在应用程序模块中导入ReactiveFormsModule 在布线组件中: app.routingmodule.tsAngular 模板分析错误:Can';t绑定到';formGroup';因为它不是';t'的已知属性;表格';,angular,angular2-forms,angular-reactive-forms,angular4-forms,Angular,Angular2 Forms,Angular Reactive Forms,Angular4 Forms,我有一个角度路由,在其中一个组件中,我有一个简单的登录表单,并在模板中提供formGroup,它显示了上面的错误 步骤:在应用程序模块中导入ReactiveFormsModule 在布线组件中: app.routingmodule.ts import { RouterModule } from '@angular/router'; import { NgModule } from '@angular/core'; import { LoginViewComponent } from './vie
import { RouterModule } from '@angular/router';
import { NgModule } from '@angular/core';
import { LoginViewComponent } from './views/login/login.component';
import { HomeViewComponent } from './views/home/home.component';
import { CatalogViewComponent } from './views/catalog/catalog.component';
@NgModule({
declarations: [
LoginViewComponent, HomeViewComponent, CatalogViewComponent
],
imports: [
RouterModule.forRoot([
{ path: 'login', component: LoginViewComponent },
{ path: 'home', component: HomeViewComponent },
{ path: 'catalog', component: CatalogViewComponent },
{ path: '**', redirectTo: 'login' }
])
],
exports: [
RouterModule
],
providers: [],
})
export class AppRoutingModule {}
catalog.component.ts
import { Component, OnInit } from '@angular/core';
import { Http } from '@angular/http';
import { FormControl, FormGroup } from '@angular/forms';
@Component({
selector: 'reactiveform',
templateUrl: 'catalog.component.html',
})
export class CatalogViewComponent implements OnInit {
form: FormGroup;
constructor() {
}
ngOnInit() {
this.form = new FormGroup({
name: new FormControl(''),
userName: new FormControl('')
});
console.log(this.form);
}
processForm() {
console.log("formProcessing" + this.form.value);
}
}
catalog.component.html
<form [formGroup]="form" (ngSubmit)="processForm()" >
<div class="form-group">
<label for="name">Name </label>
<input type="text" class="form-control" name="name" formControlName="name" required>
</div>
<div class="form-group">
<label for="userName">Username </label>
<input type="text" class="form-control" name="userName" formControlName="userName" required>
</div>
<div class="form-group">
<button type="submit" class="btn btn-danger">Submit </button>
</div>
</form>
名称
用户名
提交
演示URL:
如果我删除Html中的formGroup,应用程序工作正常您在
ApprovingModule
中声明了CatalogViewComponent
,因此您必须导入ReactiveFormsModule
:
app.routing.module.ts
@NgModule({
declarations: [
LoginViewComponent, HomeViewComponent, CatalogViewComponent
],
imports: [
ReactiveFormsModule, <=============================== add this
RouterModule.forRoot([
{ path: 'login', component: LoginViewComponent },
{ path: 'home', component: HomeViewComponent },
{ path: 'catalog', component: CatalogViewComponent },
{ path: '**', redirectTo: 'login' }
])
],
exports: [
RouterModule
],
providers: [],
})
export class AppRoutingModule {}
并将其导入任何使用反应式表单的模块中您在
AppRoutingModule
中声明了CatalogViewComponent
,因此您必须导入反应式表单模块
:
app.routing.module.ts
@NgModule({
declarations: [
LoginViewComponent, HomeViewComponent, CatalogViewComponent
],
imports: [
ReactiveFormsModule, <=============================== add this
RouterModule.forRoot([
{ path: 'login', component: LoginViewComponent },
{ path: 'home', component: HomeViewComponent },
{ path: 'catalog', component: CatalogViewComponent },
{ path: '**', redirectTo: 'login' }
])
],
exports: [
RouterModule
],
providers: [],
})
export class AppRoutingModule {}
并将其导入任何使用反应式表单的模块中如果我有多个路由模块,是否有办法在一个位置添加并在所有路由组件中使用它。创建
共享模块
并导入它,是否有办法在一个位置添加并在所有路由组件中使用它,如果我有多个路由模块。创建SharedModule
并导入它