// GET: Principles/Edit/5
public async Task <IActionResult> Edit(int?id)
{
if (id == null)
{
return(NotFound());
}
var principle = await _context.Principles.FindAsync(id);
if (principle == null)
{
return(NotFound());
}
// Must initialize
var viewModel = new PrincipleEditViewModel()
{
Principle = principle,
};
return(View(viewModel));
}
public async Task <IActionResult> Edit(int id, PrincipleEditViewModel viewModel)
{
var principle = viewModel.Principle;
if (id != principle.PrincipleId)
{
return(NotFound());
}
if (ModelState.IsValid)
{
try
{
if (ModelState.IsValid)
{
if (viewModel.PrincipleFileToSave != null)
{
// These are required to save the file to the project's wwwroot/Images folder.
var uniqueFileName = GetUniqueFileName(viewModel.PrincipleFileToSave.FileName);
var uploads = Path.Combine(_hostEnviro.WebRootPath, "Images");
var filePath = Path.Combine(uploads, uniqueFileName);
// Creating a formatted string to save to the Db.
var imagepath = "~/Images/" + uniqueFileName;
// Assign that variable to PrincipleImage.
// Must drill down through the "model" parameter passed in here.
viewModel.Principle.PrincipleImage = imagepath;
viewModel.PrincipleFileToSave.CopyTo(new FileStream(filePath, FileMode.Create));
// Based on the debugger, the file is added to the Images folder here.
}
else
{
principle = await _context.Principles.FindAsync(id);
var formerFileName = principle.PrincipleImage.Substring(2);
viewModel.Principle.PrincipleImage = formerFileName;
// Update all properties of viewModel.Principle with the principle we got from the Db.
// Except for the PrincipleImage property and the PrincipleId
principle.PrincipleName = viewModel.Principle.PrincipleName;
principle.PrincipleDescription = viewModel.Principle.PrincipleDescription;
principle.User = viewModel.Principle.User;
principle.UserId = viewModel.Principle.UserId;
viewModel.Principle = principle;
}
// Identity. Need this outside the if statements to pick up the UserId no matter the condition.
var User = await GetCurrentUserAsync();
viewModel.Principle.UserId = User.Id;
// Data passed to Db.
_context.Update(viewModel.Principle);
await _context.SaveChangesAsync();
// Redirect to the Details view of the newly created principle.
return(RedirectToAction("Details", new { id = viewModel.Principle.PrincipleId }));
}
}
catch (DbUpdateConcurrencyException)
{
if (!PrincipleExists(principle.PrincipleId))
{
return(NotFound());
}
else
{
throw;
}
}
return(RedirectToAction(nameof(Index)));
}
return(View(viewModel));
}