ngx-back-button

@ngx-back-button

A library for handling a proper angular back button capability

1. Handle Browser history
2. Handle Fallback when clicking on the back button when not routed yet
3. Handle custom Fallback

• @ngx-back-button
  • Installation
    • rootUrl
    • fallbackPrefix
  • Usage
    • Directive
    • Service
  • Authors and acknowledgment

Installation

npm install ngx-back-button

Inside your app.module.ts file.

import { NgxBackButtonModule, NgxBackButtonService } from 'ngx-back-button'

  imports: [
    NgxBackButtonModule.forRoot({}), // Default rootUrl === '/'

    // Or
    NgxBackButtonModule.forRoot({
      rootUrl: '/custom', // Or any custom root url
      fallbackPrefix: '/tabs' // For libraries users
    }),
  ],
  providers: [
    {
      provide: APP_INITIALIZER,
      useFactory: () => () => null,
      deps: [NgxBackButtonService],
      multi: true,
    },
  ]

rootUrl

The default fallback in case your landing on the page and have nothing to go back to

fallbackPrefix

Added to the fallback argument.

Use: If you're building a library, wish to put some back button with fallback.

Let say, you build a component that have the following

<button ngxBackButton="/login">
  Back to login
</button>

But inside your app, you always have the /tabs first.

Adding fallbackPrefix: '/tabs' will be the same as if you were doing the following

<button ngxBackButton="/tabs/login">
  Back to login
</button>

Usage

Wherever you plan to use the back button logic

import { NgxBackButtonModule } from 'ngx-back-button'

imports: [
  NgxBackButtonModule,
]

Then you can use it in two different way

Directive

Normal use

<button ngxBackButton>
  Back button
</button>

With Fallback

<button ngxBackButton="/login">
  Back to login
</button>

Service

// foo.component.ts
import { NgxBackButtonService } from 'ngx-back-button'

// ...
 constructor(public ngxBackButtonService: NgxBackButtonService) {}

Normal use

<button (click)="ngxBackButtonService.back()">
  Back button
</button>

With Fallback

<button (click)="ngxBackButtonService.back('/login')">
  Back to login
</button>

Authors and acknowledgment

• maintainer Raphaël Balet
• Inspired by Nils Mehlhirn