Nest: Nest can't resolve dependencies of the AuthService (?). Please make sure that the argument at index [0] is available in the AuthModule context.
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[ ] Regression
[ x] Bug report
[ ] Feature request
[ ] Documentation issue or request
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Current behavior
I get :
Error: Nest can't resolve dependencies of the AuthService (?). Please make sure that the argument at index [0] is available in the AuthModule context.
Expected behavior
The app should run and the AuthService dependancies can be injected in AuthModule
Minimal reproduction of the problem with instructions
app.module.ts
@Module({
imports: [
TypeOrmModule.forRoot(),
UserModule,
AuthModule
],
controllers: [AppController, UserController],
providers: [AppService, UserService],
})
export class AppModule {
constructor(private readonly connection: Connection) {
}
}
auth.module.ts :
@Module({
imports: [UserModule],
providers: [AuthService, HttpStrategy]
})
export class AuthModule {
}
http.strategy.ts :
@Injectable()
export class HttpStrategy extends PassportStrategy(Strategy) {
constructor(private readonly authService: AuthService) {
super();
}
async validate(token: string) {
const user = await this.authService.validateUser(token);
if (!user) {
throw new UnauthorizedException();
}
return user;
}
}
auth.service.ts :
@Injectable()
export class AuthService {
constructor(private readonly userService: UserService) {}
async validateUser(token: string): Promise<any> {
// Validate if token passed along with HTTP request
// is associated with any registered account in the database
return await this.userService.findOneByToken(token);
}
}
What is the motivation / use case for changing the behavior?
I want to add an Authentication system in my app.
Environment
Nest version: 5.4.0
For Tooling issues:
- Node version: 10.15.0
- Platform: Windows
frenchqwerty
All 9 comments
Please, provide a minimal repository which reproduces your issue.
kamilmysliwiec
on 19 Mar 2019
https://github.com/frenchqwerty/nest-js-auth-issues there are the repo
frenchqwerty
on 19 Mar 2019
Hi, i think you are missing the export of the provider (you are trying to use the service in a different module)
I have ran into the same issue before
underfisk
on 19 Mar 2019
My issues is solved !
The solution is :
auth.module.ts :
@Module({
imports: [
UserModule,
PassportModule.register({defaultStrategy: 'bearer'})
],
providers: [AuthService, HttpStrategy, UserService]
})
export class AuthModule {
}
Just add the UserService in provider.
frenchqwerty
on 19 Mar 2019
Glad to hear ;)
underfisk
on 19 Mar 2019
Instead of adding UserService twice (in UserModule and AuthModule), simply export it from UserModule (add UserService to exports array)
kamilmysliwiec
on 20 Mar 2019
Instead of adding
UserServicetwice (inUserModuleandAuthModule), simply export it fromUserModule(addUserServiceto exports array)
exuse me why does this answer ?
sorushsaghari
on 19 Apr 2019
wondering if anyone has insight into why this isnt working
Nest can't resolve dependencies of the UsersService (?). Please make sure that the argument at index [0] is available in the AppModule context.
UserSerivice is being imported via the module into the AuthModule. I can use TopicModule fine
https://github.com/ricardosaracino/collab-apiapp/blob/master/src/users/users.service.ts
ricardosaracino
on 25 Jun 2019
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lock[bot]
on 23 Sep 2019
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Most helpful comment
Hi, i think you are missing the export of the provider (you are trying to use the service in a different module)
I have ran into the same issue before