CODEWITHSUNDEEP
nestjsnestjs-passport
wonderkids
wonderkids

Reputation: 285

Why nestjs service is not injected into passport strategy?

I'm trying to make application using nestjs

Dependency injection into controller works well so far.

But when I inject service into passport strategy, injecting is not working.

I want to inject authService into googleStrategy.

This is my module code.

auth.modules.ts

@Module({
  imports: [
    UsersModules,
    PassportModule,
  ],
  controllers: [AuthController],
  providers: [AuthService, GoogleStrategy],
})
export class AuthModules {}

google.strategy.ts

@Injectable()
export class GoogleStrategy extends PassportStrategy(Strategy, 'google') {
  constructor(private authService: AuthService) {
    super({ /*...*/ });
    console.log(this.authService) //undefined
  }
}

In this case, AuthService is not injected.

When I inject AuthService manually using @Inject decorator, AuthService injected successfully.

constructor(@Inject('AuthService') private authService: AuthService) {
  super({ /*...*/ });
  console.log(this.authService) // AuthService is injected
}

Why service is not injected into passport strategy?

Upvotes: 4

Views: 1639

Answers (2)

mouawia_shride
mouawia_shride

Reputation: 41

i think that you want to do something like this

import { PassportStrategy } from '@nestjs/passport';
import { ExtractJwt, Strategy } from 'passport-jwt';
import { config } from 'dotenv';
import { UserService } from 'src/user/user.service';
import { Injectable } from '@nestjs/common';
config();
@Injectable()
export class JwtStrategy extends PassportStrategy(Strategy, 'jwt') {
  constructor(private readonly UserSerive: UserService) {
    super({
      jwtFromRequest: ExtractJwt.fromAuthHeaderAsBearerToken(),
      ignoreExpiration: false,
      secretOrKey: process.env.jwt_secret,
    });
  }

  async validate(payload: any) {
    return {
      user: payload.sub,
      username: payload.username,
      id: payload.id,
      roles: (await this.UserSerive.findOne(payload.id)).roles,
    };
  }
}

Upvotes: 2

dokichan
dokichan

Reputation: 641

Try to register your AuthService in AuthModule like this:

providers: [
  {
    provide: 'AUTH_SERVICE',
    useClass: AuthService
  },
  GoogleStrategy
]

And then, in GoogleStrategy class, in constructor write this:

constructor(@Inject('AUTH_SERVICE') private authService: AuthService)

Upvotes: 0

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