public async Task <IActionResult> ManageRolesForUser(string id)
{
if (string.IsNullOrEmpty(id))
{
return(RedirectToAction(nameof(Index)));
}
var user = await _userMgr.FindByNameAsync(id);
var userRoles = await _userMgr.GetRolesAsync(user);
var model = new ManageRolesForUserModel {
Username = id
};
model.AllRoles.AddRange(await _repo.GetAllRoleNamesAsync());
model.GrantedRoles.AddRange(userRoles);
return(View(model));
}
public async Task <IActionResult> ManageRolesForUser(IFormCollection collection)
{
if (collection == null)
{
throw new ArgumentNullException(nameof(collection));
}
string username = collection["Username"];
var model = new ManageRolesForUserModel
{
Username = username
};
model.AllRoles.AddRange(await _repo.GetAllRoleNamesAsync());
var user = await _userMgr.FindByNameAsync(username);
var currRoles = await _userMgr.GetRolesAsync(user);
var newRoleList = new List <string>();
if (!string.IsNullOrEmpty(collection["role"]))
{
newRoleList.AddRange(collection["role"]);
}
var toRemove = currRoles.Where(cm => !newRoleList.Any(nm => string.Equals(cm, nm, StringComparison.OrdinalIgnoreCase)));
var toAdd = newRoleList.Where(nm => !currRoles.Any(cm => string.Equals(cm, nm, StringComparison.OrdinalIgnoreCase)));
var errs = new List <IdentityError>();
_log.LogInformation("new roles: {Roles}", string.Join(", ", newRoleList));
foreach (var role in toRemove)
{
var result = await _userMgr.RemoveFromRoleAsync(user, role);
if (!result.Succeeded)
{
errs.AddRange(result.Errors);
}
}
foreach (var role in toAdd)
{
var result = await _userMgr.AddToRoleAsync(user, role);
if (!result.Succeeded)
{
errs.AddRange(result.Errors);
}
}
if (errs.Any())
{
model.Result = IdentityResult.Failed(errs.ToArray());
}
else
{
model.Result = IdentityResult.Success;
}
// after the changes, get the new membership info (we are now
user = await _userMgr.FindByNameAsync(username);
currRoles = await _userMgr.GetRolesAsync(user);
model.GrantedRoles.AddRange(currRoles);
return(View(model));
}