Laravel 4.0：急切加载错误 - 试图获取非对象的属性

I'm trying to utilize the eager loading feature in laravel but it doesn't work as i expected. When i try to check the profile of user who doesn't have information in Profiles table it throws "Trying to get property of non-object" instead of giving a NULL value. I have separated users information into two tables -> users table and Profiles table. How can i get past that?!

ProfilesController.php

    use Illuminate\Database\Eloquent\ModelNotFoundException;
    class ProfilesController extends \BaseController {

    public function show($username)
{
    try {
    $user = User::with('profile')->whereUsername($username)->firstOrFail();


    } catch (ModelNotFoundException $e) {

        return Redirect::home()->with('globalerror', 'The user you are trying to search does not exists!');

    }
    return View::make('profiles.show')->withUser($user);
}
   }

Profiles.php Model

    class Profile extends Eloquent
    {

        public function owner(){
         return $this->belongsTo('User', 'user_id');
          }
    }

Users.php model

    use Illuminate\Auth\UserInterface;
    use Illuminate\Auth\Reminders\RemindableInterface;

    class User extends Eloquent implements UserInterface, RemindableInterface {

protected $table = 'users';

    protected $fillable = array('first_name', 'last_name', 'username', 'email', 'password', 'password_temp', 'code', 'active');



    public function profile(){
    return $this->hasOne('Profile');
     }


   }

That is one downfall of using the with() function. It will return a user even if the user does not have a profile.

What you can do is make sure there is a profile using something like isset($user->profile) ? $user->profile : 'user does not have a profile';

Or you can use has() in place of with() which will only get the user if it has a profile.

You may try this:

$user = User::with('profile')->whereUsername($username)->firstOrFail();
return View::make('profiles.show')->withUser($user);

Then in your view; you may try something like this:

@if(isset($user) && isset($user->profile))
    {{ $user->profile->propertyname or '' }}
@endif

The only way which works so far , i have decided to manually insert a user id into the profiles table whenever new user registers. This will make eager loading work without problems because it won't return null anymore. Here is the code:

    $profile = new Profile;
    $profile->user_id = $user->id;
    $profile->save();`

Hope it might help someone out there someday