understanding-fillable.php

<?php

class Model
{
    protected $attributes, $fillable, $guarded;

    public function fill(array $attributes)
    {
        $totallyGuarded = $this->totallyGuarded();

        foreach ($this->fillableFromArray($attributes) as $key => $value)
        {
            $key = $this->removeTableFromKey($key);

            if ($this->isFillable($key))
            {
                $this->setAttribute($key, $value);
            }
            elseif ($totallyGuarded)
            {
                throw new Exception(sprintf(
                    'Adicione  à propriedade [%s] em fillable para permitir a atribuição em massa em [%s].',
                    $key, get_class($this)
                ));
            }
        }

        return $this->attributes;
    }

    public function isFillable($key)
    {
        if (in_array($key, $this->fillable)) return true;

        if ($this->isGuarded($key)) return false;

        return empty($this->fillable);
    }

    public function isGuarded($key)
    {
        return in_array($key, $this->guarded) || $this->guarded == array('*');
    }

    protected function setAttribute($key, $value)
    {
        $this->attributes[$key] = $value;
    }

    protected function last($array)
    {
        return end($array);
    }

    protected function removeTableFromKey($key)
    {
        return $this->contains($key, '.') ? $this->last(explode('.', $key)) : $key;
    }

    protected function contains($haystack, $needles)
    {
        foreach ((array) $needles as $needle) {
            if ($needle !== '' && mb_strpos($haystack, $needle) !== false) {
                return true;
            }
        }

        return false;
    }

    protected function totallyGuarded()
    {
        return count($this->getFillable()) === 0 && $this->getGuarded() == ['*'];
    }

    protected function getFillable()
    {
        return $this->fillable;
    }

    protected function getGuarded()
    {
        return $this->guarded;
    }

    protected function fillableFromArray(array $attributes)
    {
        if (count($this->fillable) > 0)
        {
            return array_intersect_key($attributes, array_flip($this->fillable));
        }

        return $attributes;
    }

}



class User extends Model
{

    protected $fillable = [];

    protected $guarded = [];
}



require 'Model.php';
require 'User.php';

$user = new User();

var_dump($user->fill(['name'=>'fulano', 'age' => 99, 'genre' => 'masc']));