Question

I have been reading though the code of the NerdDinner app and specifically the Repository Pattern…
I have one simple question though, regarding this block

    public DinnersController()
        : this(new DinnerRepository()) {
    }

    public DinnersController(IDinnerRepository repository) {
        dinnerRepository = repository;
    }

What if each Dinner also had, say, a Category… my question is

Would you also initialize the category Repository in the constructor of the class??

Im sure it would work but Im not sure if the correct way would be to initialize the repository inside the method that is going to use that repository or just in the constructor of the class??

I would appreciate some insight on this issue

Thanks.

Answer 1

To keep your code decoupled and your controllers easily testable you need to stick with dependency injection so either:

public DinnersController() 
    : this(new DinnerRepository(), new CategoryRepository()) { 
} 

or the less elegant

public DinnersController() 
    : this(new DinnerRepository(new CategoryRepository())) { 
}