public async Task<ActionResult> AssignRoles(AssignRolesViewModel vm)
{
vm.AllRoles = await _context.Roles.Select(r => r.Name).ToListAsync();
var rolesToAdd = new List<string>();
var rolesToRemove = new List<string>();
foreach (var role in vm.AllRoles)
{
if (vm.SelectedRoles.Contains(role) && !await _userManager.IsInRoleAsync(vm.UserId, role))
{
rolesToAdd.Add(role);
}
else if (!vm.SelectedRoles.Contains(role) && await _userManager.IsInRoleAsync(vm.UserId, role))
{
rolesToRemove.Add(role);
}
}
var result = await _userManager.AddToRolesAsync(vm.UserId, rolesToAdd.ToArray());
if (!result.Succeeded)
{
result.Errors.Do(e => ModelState.AddModelError(String.Empty, e));
}
result = await _userManager.RemoveFromRolesAsync(vm.UserId, rolesToRemove.ToArray());
if (!result.Succeeded)
{
result.Errors.Do(e => ModelState.AddModelError(String.Empty, e));
}
return View(vm);
}
public async Task<ActionResult> AssignRoles(string id)
{
var user = _context.Users.Find(id);
if (user == null)
{
return RedirectToAction("Index");
}
var vm = new AssignRolesViewModel
{
UserId = user.Id,
AllRoles = await _context.Roles.Select(r => r.Name).ToListAsync(),
SelectedRoles = user.Roles.Join(_context.Roles, e=> e.RoleId, e => e.Id, (iur ,ir) => ir.Name).ToList()
};
return View(vm);
}
