Ionic-3找不到管道

Question

我刚刚升级到Ionic 3.0.1所以我可以使用LazyLoading,因为我不能使用我的自定义Pipes:

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

@Pipe({
  name: 'StripHTML'
})

export class StripHTML implements PipeTransform {

  transform(value, args) {
    let striped = value.replace(/(<([^>]+)>)/g, "");

    if (args != null) {
      if (args.split != null) {
        striped = striped.split(args.split);
        if (args.index != null) {
          striped = striped[args.index];
        }
      }
    }

    return striped;
  }
}

并在app.module.ts我已将其添加到声明中:

@NgModule({
  declarations: [
    ........,
    StripHTML
  ],
...

现在当我试图在html模板中使用它时出错:

core.es5.js:1085 ERROR Error: Uncaught (in promise): Error: Template parse errors:
The pipe 'StripHTML' could not be found ("
          <ion-card-content>
            <ion-card-title style="font-size: 100%">
              {{ [ERROR ->]product.title | StripHTML }}
            </ion-card-title>
          </ion-card-content>
"): ng:///HomeModule/Home.html@33:17

这里有什么我想念的吗？

Answer 1

所以我通过PipesModule在我导入自定义的位置修复此问题Pipes,然后将其导入module.ts到我想要使用它的页面中

import { NgModule } from '@angular/core';
import { StripHTML } from './strip-html';

@NgModule({
  declarations: [
    StripHTML,
  ],
  imports: [

  ],
  exports: [
    StripHTML
  ]
})
export class PipesModule { }

然后在页面中| HomePage举个例子:

import { NgModule } from '@angular/core';
import { IonicPageModule } from 'ionic-angular';
import { Home } from './home';

import { PipesModule } from '../../pipes/pipes.module';

@NgModule({
  declarations: [
    Home,
  ],
  imports: [
    IonicPageModule.forChild(Home),
    PipesModule
  ],
  exports: [
    Home
  ]
})
export class HomeModule { }

它确实工作正常,不确定这是否正确,但它工作正常,如果有更好的方法请告诉我...谢谢!

Answer 2

您需要做的只是将PipesModule(下面的代码段12)导入到您的每个page.module.ts(即home.moodule.ts)文件....

import { NgModule } from '@angular/core';
import { IonicPageModule } from 'ionic-angular';
import { LoginPage } from './login';
import { PipesModule } from '../../pipes/pipes.module';

@NgModule({
    declarations: [
        LoginPage,
    ],
    imports: [
        IonicPageModule.forChild(LoginPage),
        PipesModule
    ]
})
export class LoginPageModule { }

这对我有用.