The MVC pattern is strictly related to the interaction of the user with the application, in the most common case through a browser via HTTP requests. That said, your application does not usually live entirely within the MVC component.

Protip: If you're calling a controller from a model, you're doing something very wrong.

In this case, you might use a method inside the User class (or UserProfile class if they are separated) to calculate the profile completion.

For example:

class User extends Eloquent
{
    public function calculateCompletion()
    {
        $completed = 0;
        $profileElements = ['first_name', 'last_name', 'email', 'bio' ... ];
        $total = count($profileElements);
        foreach($profileElements as $element) {
            $completed += empty($this->{$element}) ? 1 : 0;
        }

        return $completed / $total; // 0.8 for 8/10 elements completed
    }
}

You don't want to have a static method on a controller doing calculations that are completely related to the model - that introduces single responsibility violations and isn't very intuitive. If you find yourself doing a lot of these calculations, you might even create a UserStatisticsCalculator class that knows how to evaluate the user for % profile completion, posts per day, etc.

Thanks! Can I set the completion parameter inside the function? Because for me it's handy to do a call like this:

$user->calculateCompletion()->save();

Anyone can tell me if the my solution is right?