public IActionResult Edit(int id, EditConcentrationViewModel vm)
{
//Make sure the model state is valid
if (!ModelState.IsValid)
{
return(View("Edit", vm));
}
Concentration concentration;
// If we are adding a concentration
if (id == -1)
{
concentration = new Concentration
{
Name = vm.Title
};
_context.UpdateConcentration(-1, concentration);
}
else //Editing a concentration
{
concentration = _context.ReadConcentration(id);
concentration.Name = vm.Title;
_context.UpdateConcentration(id, concentration);
}
return(RedirectToAction("Index"));
}
