How can I create a custom pipe in Angular to format dates based on user locale

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With the help of code snippets, can you tell me how I can create a custom pipe in Angular to format dates based on user locale?
Dec 11, 2024 in Angular by Ashutosh
• 18,800 points
97 views

1 answer to this question.

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To create a custom pipe in Angular for formatting dates based on the user's locale, follow these steps:

Generate the Pipe: Use Angular CLI to create a custom pipe. Run the command:

ng generate pipe customDate

This creates a custom-date.pipe.ts file.

Implement the Pipe Logic:

Import necessary modules for date formatting, such as DatePipe.

Use the transform method to implement logic for formatting dates based on a locale.

Example:

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

import { DatePipe } from '@angular/common';

@Pipe({

  name: 'customDate'

})

export class CustomDatePipe implements PipeTransform {

  constructor(private datePipe: DatePipe) {}

  transform(value: any, locale: string): string | null {

    return this.datePipe.transform(value, 'fullDate', undefined, locale);

  }

}

Provide Necessary Dependencies: Add DatePipe to your providers in the module to ensure it's available for use:

import { NgModule } from '@angular/core';

import { BrowserModule } from '@angular/platform-browser';

import { AppComponent } from './app.component';

import { CustomDatePipe } from './custom-date.pipe';

import { DatePipe } from '@angular/common';

@NgModule({

  declarations: [

    AppComponent,

    CustomDatePipe

  ],

  imports: [

    BrowserModule

  ],

  providers: [DatePipe],

  bootstrap: [AppComponent]

})

export class AppModule { }

Use the Pipe in Templates: Apply the custom pipe in your component's template:

<p>{{ someDateValue | customDate:'en-US' }}</p>
answered Dec 12, 2024 by Navya

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