public ReactionTypesController(
     IReactionTypeRepository reactionRepository,
     IMapper mapper
     )
 {
     _repository = reactionRepository;
     _mapper     = mapper;
 }
 public ReactionsController(
     IReactionRepository reactionRepository,
     IReactionTypeRepository reactionTypeRepository,
     IPostRepository postRepository,
     IUserRepository userRepository,
     IMapper mapper
     )
 {
     _reactionRepository     = reactionRepository;
     _reactionTypeRepository = reactionTypeRepository;
     _postRepository         = postRepository;
     _userRepository         = userRepository;
     _mapper = mapper;
 }