Question

first of all here is the message

The changes to the database were
committed successfully, but an error
occurred while updating the object
context. The ObjectContext might be in
an inconsistent state. Inner exception
message: A referential integrity
constraint violation occurred: The
property values that define the
referential constraints are not
consistent between principal and
dependent objects in the relationship.

the problem happens when i try to insert new data in the entityframework

---

My entity model

in the database i set the relation to cascade on delete and update. that is the only change i made to the relation

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My Action Method :

[HttpPost]
    public ActionResult CompleteRegisteration(RegisterViewModel model)
    {
        if (!ModelState.IsValid)
        {
            return View(model);
        }
        var user = new User
                       {
                           DisplayName = model.DisplayName,
                           FullName = model.Name,
                           Email = model.Email,
                       };
        user.AuthenticationTokens.Add(new AuthenticationToken
                                          {
                                              ClaimedIdentifier = model.ClaimedIdentifier,
                                              DisplayName = model.Email
                                          });
        _userRepository.InsertOrUpdate(user);
        _userRepository.Save();

        return RedirectToAction("Index", "Home");
    }

---

and the user repository methods :

    private readonly StoryWritingEntities context = new StoryWritingEntities();

    public void InsertOrUpdate(User user)
    {
        context.Users.Attach(user);
        context.ObjectStateManager.ChangeObjectState(user,
                                                     user.Id == default(int)
                                                         ? EntityState.Added // if true then this is a new entry
                                                         : EntityState.Modified); // if false this is an Existing entry

    }
    public void Save()
    {
        context.SaveChanges();
    }

---

the problem is caused by context.SaveChanges() there is a record inserted in the users table but nothing is inserted in the AuthenticationTokens table

Answer 1

If you simply did the following this wouldn’t happen:

  context.Users.AddObject(user);
  content.SaveChanges();

I suspect the problem is occurring because EF doesn’t know about the AuthenticationToken object, it’s not being attached to the context because it’s added to a disconnected entity which is then attached to the context.

You either need to let EF handle the whole object graph connectivity situation or you need to do it all yourself. Mixing and matching like this doesn’t work.