[Solved] Which of the following is the correct way to inject a repository in a NestJS service using TypeORM? — Ans: @InjectRepository(User) private userRepository: Repository; | NestJS

NestJS - Database with TypeORM

Which of the following is the correct way to inject a repository in a NestJS service using TypeORM?

A@Inject(UserRepository) private userRepository: Repository<User>;

B@InjectableRepository(User) private userRepository: Repository<User>;

C@RepositoryInject(User) private userRepository: Repository<User>;

D@InjectRepository(User) private userRepository: Repository<User>;

Step-by-Step Solution

Solution:

Step 1: Recall the correct decorator for repository injection
In NestJS with TypeORM, @InjectRepository() is used to inject repositories.
Step 2: Match the syntax with the correct option
@InjectRepository(User) private userRepository: Repository; uses @InjectRepository(User) which is the official and correct syntax.
Final Answer:
@InjectRepository(User) private userRepository: Repository<User>; -> Option D
Quick Check:
@InjectRepository = correct injection [OK]

Quick Trick: Use @InjectRepository to inject TypeORM repositories [OK]

Common Mistakes:

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Which of the following is the correct way to inject a repository in a NestJS service using TypeORM?