private static IList <Permission> SetPermission(int userId, bool permissionIsGranted, string key)
{
var permissionStatus = permissionIsGranted ? PermissionStatus.Granted : PermissionStatus.Revoked;
using (var entity = new EFTestContext())
{
var user = entity.Users.Single(x => x.Id == userId);
var existingPermission = user.Permissions.SingleOrDefault(x => x.Name == key);
switch (permissionStatus)
{
case PermissionStatus.Granted:
if (existingPermission == null)
{
user.Permissions.Add(new Permission {
Name = key
});
entity.SaveChanges();
}
break;
case PermissionStatus.Revoked:
if (existingPermission != null)
{
entity.Permissions.Remove(existingPermission);
entity.SaveChanges();
}
break;
}
var permissions = entity.Permissions
.Where(x => x.UserId == userId)
.ToList();
return(permissions);
}
}
static void Main(string[] args)
{
Database.SetInitializer(new DropCreateDatabaseAlways <EFTestContext>());
User userHans;
User userFranz;
var permissionA = "A";
var permissionB = "B";
using (var context = new EFTestContext())
{
userHans = context.Users.Add(new User()
{
Name = "Hans"
}); // Id = 1
userFranz = context.Users.Add(new User()
{
Name = "Franz"
}); // Id = 2
context.SaveChanges();
}
SetPermission(userHans.Id, true, permissionA);
SetPermission(userHans.Id, true, permissionB);
SetPermission(userFranz.Id, true, permissionA);
SetPermission(userFranz.Id, true, permissionB);
ListAllPermissions();
// 1: A
// 1: B
// 2: A
// 2: B
SetPermission(userFranz.Id, false, permissionA);
ListAllPermissions();
// 1: A
// 1: B
// 2: B
SetPermission(userHans.Id, false, permissionB);
ListAllPermissions();
// 1: A
// 2: B
}