Encore\Admin\Form\Field::value PHP Method

    public function value($value = null)
    {
        if (is_null($value)) {
            if (is_null($this->default)) {
                //$this->default = Input::get($this->column);
            }
            return is_null($this->value) ? $this->default : $this->value;
        }
        $this->value = $value;
    }