NgxMatDatefnsDateAdapter

This library provides a custom DateAdapter for the Angular Material Datepicker component using the date-fns library.

Includes all locales provided by date-fns.
Parses datetime using customizable formats.
Compatible with Angular 9/10/11
Includes 100% tests coverage

Demo

An example can be found on Stackblitz for:

Installation

npm i --save ngx-mat-datefns-date-adapter date-fns date-fns-tz

Both date-fns and date-fns-tz libraries are peer dependencies, but required for the compilation.

Angular Version	Package Version
9	9.X.X
10	10.X.X
11	11.X.X

Usage

Register the NgxMatDateFnsDateModule in your app module.

import { NgxMatDateFnsDateModule } from 'ngx-mat-datefns-date-adapter'

import { NgModule } from "@angular/core";
import { FormsModule, ReactiveFormsModule } from "@angular/forms";
import { MatDatepickerModule } from "@angular/material/datepicker";
import { MatFormFieldModule } from "@angular/material/form-field";
import { MatInputModule } from "@angular/material/input";
import { BrowserModule } from "@angular/platform-browser";
import { BrowserAnimationsModule } from "@angular/platform-browser/animations";
import { AppComponent } from "./app.component";
import { NgxMatDateFnsDateModule } from "ngx-mat-datefns-date-adapter";

@NgModule({
  declarations: [AppComponent],
  imports: [
    BrowserModule,
    BrowserAnimationsModule,
    FormsModule,
    ReactiveFormsModule,
    MatFormFieldModule,
    MatInputModule,
    MatDatepickerModule,
    NgxMatDateFnsDateModule,
  ],
  providers: [],
  bootstrap: [AppComponent],
})
export class AppModule {}

Register custom locale token in providers if needed. Also register required locales in NGX_MAT_DATEFNS_LOCALES array.

providers: [ { provide: MAT_DATE_LOCALE, useValue: 'ja' }, { provide: NGX_MAT_DATEFNS_LOCALES, useValue: [ja] } ],

import { NgModule } from "@angular/core";
import { FormsModule, ReactiveFormsModule } from "@angular/forms";
import { MAT_DATE_LOCALE } from "@angular/material/core";
import { MatDatepickerModule } from "@angular/material/datepicker";
import { MatFormFieldModule } from "@angular/material/form-field";
import { MatInputModule } from "@angular/material/input";
import { BrowserModule } from "@angular/platform-browser";
import { BrowserAnimationsModule } from "@angular/platform-browser/animations";
import { AppComponent } from "./app.component";
import { NgxMatDateFnsDateModule } from "ngx-mat-datefns-date-adapter";
import { da, ja } from 'date-fns/esm/locale'

@NgModule({
  declarations: [AppComponent],
  imports: [
    BrowserModule,
    BrowserAnimationsModule,
    FormsModule,
    ReactiveFormsModule,
    MatFormFieldModule,
    MatInputModule,
    MatDatepickerModule,
    NgxMatDateFnsDateModule,
  ],
  providers: [
    {
      provide: MAT_DATE_LOCALE,
      useValue: "ja",
    },
    {
      provide: NGX_MAT_DATEFNS_LOCALES,
      useValue: [da, ja]
    }
  ],
  bootstrap: [AppComponent],
})
export class AppModule {}

Default locale

When MAT_DATE_LOCALE and NGX_MAT_DATEFNS_LOCALES tokens are not provided, en-US locale is used by default. When empty or null value is provided to the MAT_DATE_LOCALE token, en-US locale is also used.

Change locale dynamically

Use setLocale() method of the DateAdapter. In case of using setLocale with a string argument, target locale should be imported into NGX_MAT_DATEFNS_LOCALES array.

import { Component } from '@angular/core';
import { DateAdapter } from '@angular/material/core';
import { fr } from 'date-fns/esm/locale';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.scss'],
})
export class AppComponent {

  constructor(private readonly dateAdapter: DateAdapter<any>) {}

  setLocaleWithString(): void {
    this.dateAdapter.setLocale('fr');
  }

  setLocaleWithLocaleObject(): void {
    this.dateAdapter.setLocale(fr);
  }
}

ES modules and Tree-shaking

Import date-fns locales from 'date-fns/esm/locale' entrypoint. This enables tree-shaking by the Angular builder.

UTC date creation

To get all selected dates in a MatDatetimePicker as a day start (00:00:00) in a UTC timezone, set useUtc flag in a NGX_MAT_DATEFNS_DATE_ADAPTER_OPTIONS injection token.

import { NGX_MAT_DATEFNS_DATE_ADAPTER_OPTIONS } from 'ngx-mat-datefns-date-adapter';
...

@NgModule(
  ...
  providers: [
    ...
    {
      provide: NGX_MAT_DATEFNS_DATE_ADAPTER_OPTIONS,
      useValue: {
        useUtc: true
      }
    },
    ...
  ],
  ...
})
export class AppModule {}
...

Build

Run ng build to build the project. The build artifacts will be stored in the dist/ directory. Use the --prod flag for a production build.

Running unit tests

Run ng test to execute the unit tests via Karma.

Credits

I want to thanks entire Angular team for creating this awesome framework.

License

the-ult/ngx-mat-datefns-date-adapter

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