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Authentication Decorator

Syntax: @authenticate(strategyName: string, options?: object)

Marks a controller method as needing an authenticated user. This decorator requires a strategy name as a parameter.

Here’s an example using ‘BasicStrategy’: to authenticate user in function whoAmI:

src/controllers/who-am-i.controller.ts

import {inject} from '@loopback/context';
import {
  AuthenticationBindings,
  UserProfile,
  authenticate,
} from '@loopback/authentication';
import {get} from '@loopback/rest';

export class WhoAmIController {
  constructor(
    @inject(AuthenticationBindings.CURRENT_USER) private user: UserProfile,
  ) {}

  @authenticate('BasicStrategy')
  @get('/whoami')
  whoAmI(): string {
    return this.user.id;
  }
}

For more information on authentication with LoopBack, visit here.