app.module.ts无法找到管道名称

时间:2017-02-24 05:52:50

标签: angularjs angular pipe

我试图使用Angular 2创建一个简单的应用程序,并且在使用Pipe decorator时遇到了麻烦。我使用Pipe来访问数据的关键值,我在Angular 1中可以很容易地做到这一点。为了使用PIPE实现这一点,我几乎复制了一个template张贴在相关的SO question我的app.module.ts除外。

ERROR in /Users/me/thisapp/mybio/src/app/app.module.ts (20,5): Cannot find name 'KeysPipe'.)

我尝试在我的app.module.ts声明中复制Pipe的名称,但这并没有解决问题。总的来说,我很遗憾组件,模块和pipe.ts文件如何交互。我会感谢任何帮助,如果你能解释这个问题。

app.module.ts

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { FormsModule } from '@angular/forms';
import { HttpModule } from '@angular/http';
import { Pipe, PipeTransform } from '@angular/core';
import { routes } from './app.router';
import { AppComponent } from './app.component';
import { AppResumeComponent } from './app-resume/app-resume.component';
import { EducationComponent } from './education/education.component';
import { WorkxpComponent } from './workxp/workxp.component';
import { LaughComponent } from './laugh/laugh.component';

@NgModule({
  declarations: [
    AppComponent,
    AppResumeComponent,
    EducationComponent,
    WorkxpComponent,
    LaughComponent,
    KeysPipe
  ],
  imports: [
    BrowserModule,
    FormsModule,
    HttpModule,
    routes
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

pipe.ts

@Pipe({name:'keys'})
export class KeysPipe implements PipeTransform {
    transform(value,args:string[]) : any {
    let keys = [];
    for (let key in value){
        keys.push({key: key, value: value[key]});
    }
    return keys
}
}

laugh.component.ts

import {Component, Pipe, PipeTransform} from '@angular/core';


import {KeysPipe} from './pipe'

@Component({
    selector: 'my-app',
    templateUrl: 'laugh.component.html',
})
export class LaughComponent { 

  demo = {
    'key1': 'ANGULAR 2',
    'key2': 'Pardeep',
    'key3': 'Jain',
  }
}

1 个答案:

答案 0 :(得分:3)

您需要将导入添加到module.ts

import {KeysPipe} from './pipe'