public IActionResult ManageRoles(Int32 id)
{
var entity =
Db.Usuario
.FirstOrDefault(x => x.UsuarioId == id);
if (entity == null)
{
return(HttpNotFound());
}
var roles =
Db.Rol
.Select(x => new UsuarioRolAssignModel
{
RolId = x.RolId,
Nombre = x.Nombre,
Assigned =
Db.UsuarioRol
.Where(y => y.UsuarioId == id)
.Any(y => x.RolId == y.RolId)
})
.OrderBy(x => x.Nombre)
.ToArray();
var model = new UsuarioManageRolesModel
{
UsuarioId = id,
Roles = roles
};
return(View(model));
}
public IActionResult ManageRoles(Int32 id, UsuarioManageRolesModel model)
{
var entity =
Db.Usuario
.FirstOrDefault(x => x.UsuarioId == id);
if (entity == null)
{
return(HttpNotFound());
}
if (!ModelState.IsValid)
{
return(RedirectToAction("ManageRoles"));
}
var inputRolIds = model.Roles.Select(x => x.RolId).ToArray();
var existingRolIdsCount =
Db.Rol
.Where(x => inputRolIds.Contains(x.RolId))
.Count();
if (inputRolIds.Length != existingRolIdsCount)
{
return(RedirectToAction("ManageRoles"));
}
var usuarioRoles =
Db.UsuarioRol
.Where(x => x.UsuarioId == id)
.ToArray()
.ToDictionary(x => x.RolId, x => x);
var remove = new List <UsuarioRol>();
var create = new List <UsuarioRol>();
foreach (var assignment in model.Roles)
{
UsuarioRol existing = null;
usuarioRoles.TryGetValue(assignment.RolId, out existing);
if (assignment.Assigned && existing == null)
{
create.Add(new UsuarioRol
{
RolId = assignment.RolId,
UsuarioId = id
});
}
else if (!assignment.Assigned && existing != null)
{
remove.Add(existing);
}
else
{
// don't care
}
}
Db.UsuarioRol.RemoveRange(remove);
Db.UsuarioRol.AddRange(create);
Db.SaveChanges();
return(RedirectToAction("Detail", new { id = id }));
}
