public async Task <IActionResult> CreateDava([FromBody] DavaViewModel model)
        {
            try
            {
                var muvekkil = await _userManager.FindByIdAsync(model.MuvekkilId);

                var avukat = await _userManager.FindByIdAsync(model.AvukatId);

                var newDavaState = _davaStateRepository.GetNewDavaState();

                var dava = new Dava()
                {
                    Avukat = avukat, Name = model.Name, Muvekkil = muvekkil, DavaState = newDavaState
                };
                _davaRepository.AddDava(dava);
                var davaVM = _mapper.Map <DavaViewModel>(dava);
                return(Ok(davaVM));
            }
            catch (Exception ex)
            {
                return(BadRequest(ex.Message));
            }
        }