jac*_*ack 2 ionic-framework angular
我创建了一个带有表单的 Ionic 应用程序。没什么特别的(代码如下)。在我添加表单并使用表单组和其他东西之前,它工作得很好。当我开始添加表单组和所有连接的东西时,我收到此错误:
\n\n\n\n\ncore.js:6260 错误错误:未捕获(承诺中):错误:NodeInjector:\n NOT_FOUND [ControlContainer] 错误:NodeInjector: NOT_FOUND\n [ControlContainer]\n 位于 getOrCreateInjectable (core.js:5894)\n 模块处。 \xc9\xb5\xc9\xb5directiveInject (core.js:21115)\n 在 NodeInjectorFactory.NgControlStatusGroup_Factory [作为工厂] (forms.js:1073)\n 在 getNodeInjectable (core.js:6025)\n 在 instantiateAllDirectives (core. js:12953)\n 在 createDirectivesInstances (core.js:12169)\n 在 \xc9\xb5\xc9\xb5elementStart (core.js:21298)\n 在 EditPage_Template (template.html:18)\n 在executeTemplate (core) .js:12129)\ n在renderView(core.js:11899)\ n在resolvePromise(zone-evergreen.js:798)\ n在resolvePromise(zone-evergreen.js:750)\ n在zone-evergreen.js :860\n 在 ZoneDelegate.invokeTask (zone-evergreen.js:399)\n 在 Object.onInvokeTask (core.js:41640)\n 在 ZoneDelegate.invokeTask (zone-evergreen.js:398)\n 在区域。 runTask (zone-evergreen.js:167)\n 在rainMicroTaskQueue (zone-evergreen.js:569)
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我尝试了在网上找到的东西:\n从文件 app.module.ts 中的 @angular/forms 导入 Forms Module 和 ReactiveFormsModule
\n\n这对我不起作用,并且我不断收到错误。
\n\n我在 SO 上找到并尝试过的链接,但没有成功:
\n\nAngular Error: NodeInjector: NOT_FOUND [ControlContainer] 中突然出现错误
\n\n在 Angular 6 中使用 Angular Material Forms 时,没有提供 ControlContainer 错误的提供程序
\n\n没有 ControlContainer 的提供者和 ControlContainer 没有提供者
\n\n这是我的代码:
\n\n<ion-content>\n <form [formGroup]="todo" (ngSubmit)="save()">\n <ion-row>\n <ion-col>\n <ion-list inset>\n <ion-item>\n <ion-input placeholder="Title" formControlName="title" id="title" type="text"></ion-input>\n </ion-item>\n <ion-item>\n <ion-input placeholder="Description" formControlName="description" id="description" type="text"></ion-input>\n </ion-item>\n </ion-list>\n </ion-col>\n </ion-row>\n </form>\n</ion-content>\nRun Code Online (Sandbox Code Playgroud)\n\n在我的组件中:
\n\nimport { Component } from \'@angular/core\';\nimport { FormGroup, FormBuilder, Validators } from \'@angular/forms\';\n\n@Component({\n selector: \'app-edit\',\n templateUrl: \'./edit.page.html\',\n styleUrls: [\'./edit.page.scss\'],\n})\nexport class EditPage {\n editId: number = 0;\n todo : FormGroup;\n\n constructor(private formBuilder: FormBuilder) {\n\n this.todo = this.formBuilder.group({\n title: [\'\', Validators.required],\n description: [\'\'],\n });\n }\n}\nRun Code Online (Sandbox Code Playgroud)\n\n最后是我的应用程序模块:
\n\nimport { FormsModule, ReactiveFormsModule } from \'@angular/forms\';\nimport { NgModule } from \'@angular/core\';\nimport { BrowserModule } from \'@angular/platform-browser\';\nimport { RouteReuseStrategy } from \'@angular/router\';\n\nimport { IonicModule, IonicRouteStrategy } from \'@ionic/angular\';\nimport { SplashScreen } from \'@ionic-native/splash-screen/ngx\';\nimport { StatusBar } from \'@ionic-native/status-bar/ngx\';\n\nimport { AppComponent } from \'./app.component\';\nimport { AppRoutingModule } from \'./app-routing.module\';\nimport { HttpClientService } from \'./core/services/http-client.service\';\nimport { HttpClientModule } from \'@angular/common/http\';\nimport { CommonModule } from \'@angular/common\';\n\n@NgModule({\n declarations: [AppComponent],\n entryComponents: [],\n imports:\n [\n FormsModule,\n ReactiveFormsModule,\n CommonModule,\n BrowserModule,\n HttpClientModule,\n IonicModule.forRoot(), AppRoutingModule\n ],\n providers: [\n StatusBar,\n SplashScreen,\n HttpClientService,\n { provide: RouteReuseStrategy, useClass: IonicRouteStrategy }\n ],\n bootstrap: [AppComponent]\n})\nexport class AppModule {\n}\nRun Code Online (Sandbox Code Playgroud)\n
小智 5
您必须导入ReactiveFormsModule页面的module.ts文件。
例如
import { IonicModule } from '@ionic/angular';
import { RouterModule } from '@angular/router';
import { NgModule } from '@angular/core';
import { CommonModule } from '@angular/common';
import {FormsModule, ReactiveFormsModule} from '@angular/forms';
import { ProfilePage } from './profile.page';
@NgModule({
imports: [
IonicModule,
CommonModule,
FormsModule,
RouterModule.forChild([{path: '', component: ProfilePage}]),
ReactiveFormsModule
],
declarations: [ProfilePage]
})
export class ProfilePageModule {}
Run Code Online (Sandbox Code Playgroud)
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