public async Task <ActionResult <List <CategoryDto> > > getCategories()
{
_orm.OpenConn();
var categoriesFromDB = await _orm.GetAllCategories();
if (categoriesFromDB == null)
{
return(NotFound());
}
var categoriesDto = _mapper.Map <List <CategoryDto> >(categoriesFromDB);
await _orm.CloseConn();
return(Ok(categoriesDto));
}