Create Activity Feed in Laravel4 with polymorphic relations

Question

i wanna create activity feed in laravel4, so i've done this with polymorphic relations where Feed model has item() function, here it's:

class Feed extends \Eloquent
{ 
    protected $table = 'feed'; 

    public function item() 
    { 
        return $this->morphTo(); 
    }
}

Then i added other relations for child models:

class UserStatus extends \Eloquent
{ 
    protected $table = 'user_status'; 

    public function feed() 
    { 
        return $this->morphMany('Feed', 'item'); 
    }
}

class Photo extends \Eloquent
{ 
    protected $table = 'photo'; 

    public function feed() 
    { 
        return $this->morphMany('Feed', 'item'); 
    }
}

But when i query activities of user it shows: Class name must be a valid object or a string

Here's my query in User model:

class User extends \Eloquent
{ 
    public function activities()
    { 
        return $this->hasMany('Feed', 'user_id')->with('item')->get();
    }
}

How can I get activity list (parent polymorphic model Feed) for user?

Answer 1

From the docs...

Polymorphic relations allow a model to belong to more than one other model, on a single association. For example, you might have a photo model that belongs to either a staff model or an order model.

This allows a child object (eg. a photo or comment) to belong to more than one type of parent object. I think you're trying to do the opposite - a single parent with multiple types of children.