How To Use Angular Pipes In Components OR Services

The Code Points May 30, 2022 0

In this article, we will learn about the how to use Angular Pipes in components and services. In the template, we commonly use Angular Pipes. A pipe, on the other hand, is nothing more than a class with a convert method. We can easily use it in an angular component or service, whether it's a built-in pipe or a custom pipe.

Using Pipes in Components & Services

There are three basic steps to using pipes in your code.

• In Module, import the pipe.
• Pipe should be injected into the constructor.
• Use the pipe's transform technique.

Components & Services: Using Date Pipe

Import the DatePipe from @angular/common and Add it in the Angular Provider metadata providers: [ DatePipe ].

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
 
import { DatePipe } from '@angular/common';
 
import { AppRoutingModule } from './app-routing.module';
import { AppComponent } from './app.component';
 
@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    BrowserModule,
    AppRoutingModule
  ],
  providers: [
    DatePipe
  ],
  bootstrap: [AppComponent]
})
export class AppModule { }

Now, open the app.component.html and Inject the DatePipe in the function.

constructor(private datePipe:DatePipe) {
}

It's possible to use it in a component, as like below.

this.toDate = this.datePipe.transform(new Date());

The date is the first argument to the transform method. DatePipe accepts extra parameters such as format, timezone and locale.

this.toDate = this.datePipe.transform(new Date(),'dd/MM/yy HH:mm');

The final code of app.component.ts can be found below.

import { Component, OnInit } from '@angular/core';
import { DatePipe } from '@angular/common';
 
@Component({
  selector: 'app-root',
  template: `
    {{toDate}}
  `,
  styleUrls: ['./app.component.css']
})
export class AppComponent implements OnInit {
  title = 'pipesInService';
 
  toDate
 
  constructor(private datePipe:DatePipe) {
  }
 
  ngOnInit() {
 
    this.toDate = this.datePipe.transform(new Date());
  }
}

Conclusion

In this article, we learned about the how to use Angular Pipes in components and services. In next article we learn about the component communication.

I hope this article helps you and you will like it.👍

If you have any doubt or confusion then free to ask in comment section.