Laravel 4 Auth with Facebook (no password authentication) - facebook

Question

I'm trying to set up an authentication system with Laravel 4 with a Facebook login. I am using the madewithlove/laravel-oauth2 package for Laravel 4.
Of course, there is no password to add to my database upon a user loggin in with Facebook. I am, however, trying to check to see if a user id is in the database already to determine if I should create a new entity, or just log in the current one. I would like to use the Auth commands to do this. I have a table called "fans".
This is what I'm working with:
$fan = Fan::where('fbid', '=', $user['uid']);
if(is_null($fan)) {
$fan = new Fan;
$fan->fbid = $user['uid'];
$fan->email = $user['email'];
$fan->first_name = $user['first_name'];
$fan->last_name = $user['last_name'];
$fan->gender = $user['gender'];
$fan->birthday = $user['birthday'];
$fan->age = $age;
$fan->city = $city;
$fan->state = $state;
$fan->image = $user['image'];
$fan->save();
return Redirect::to('fans/home');
}
else {
Auth::login($fan);
return Redirect::to('fans/home');
}
Fan Model:
<?php
class Fan extends Eloquent {
protected $guarded = array();
public static $rules = array();
}
When I run this, I get the error:
Argument 1 passed to Illuminate\Auth\Guard::login() must be an instance of Illuminate\Auth\UserInterface, instance of Illuminate\Database\Eloquent\Builder given
EDIT: When I use: $fan = Fan::where('fbid', '=', $user['uid'])->first();
I get the error:
Argument 1 passed to Illuminate\Auth\Guard::login() must be an instance of Illuminate\Auth\UserInterface, null given, called in /Applications/MAMP/htdocs/crowdsets/laravel-master/vendor/laravel/framework/src/Illuminate/Auth/Guard.php on line 368 and defined
I do not know why it is giving me this error. Do you have suggestions on how I can make this work? Thank you for your help.

Answer 1

You have to implement UserInterface to your model for Auth to work properly
use Illuminate\Auth\UserInterface;
class Fan extends Eloquent implements UserInterface{
...
public function getAuthIdentifier()
{
return $this->getKey();
}
/**
* Get the password for the user.
*
* #return string
*/
public function getAuthPassword()
{
return $this->password;
}
}
getAuthIdentifier and getAuthPassword are abstract method and must be implemented in you class implementing UserInterface

Answer 2

To login any user into the system, you need to use the User model, and I bet inherited classes will do the trick as well but I'm not sure.
Anyway, your Fan model does not associate with the User model/table in any way and that's a problem. If your model had a belong_to or has_one relationship and a user_id field then you could replace Auth::login($user) with Auth::loginUsingId(<some id>).
Original answer:
You are missing an extra method call: ->get() or ->first() to actually retrieve the results:
$fan = Fan::where('fbid', '=', $user['uid'])->first();
Alternatively, you can throw an exception to see what's going on:
$fan = Fan::where('fbid', '=', $user['uid'])->firstOrFail();
If you see different errors, update your question with those errors.