Storage.php

<?php

namespace Model;

use Nette;

class DemandStorage extends Nette\Object
{
    protected $session;
    public function __construct(Nette\Http\Session $session)
    {
        $this->session = $session->getSection('demandForm');    
    }

    public function flush()
    {
        $this->session->remove();
    }

    public function getRawData()
    {
        return isset($this->session['formData']) ? $this->session['formData'] : array();
    }

    public function getStepNumber()
    {
        return isset($this->session['step']) ? $this->session['step'] : 1;
    }

    public function setRawData($data)
    {
        $this->session['formData'] = $data;
        return $this;
    }

    public function addRawData($data)
    {
        $originalData = $this->getRawData();
        $data = array_merge($originalData, $data);
        $this->setRawData($data);
        return $this;
    }

    public function setStepNumber($step = 1)
    {
        $this->session['step'] = $step;
        return $this;
    }

    public function getValue($name, $default = NULL)
    {
        $data = $this->getRawData();
        return Nette\Utils\Arrays::get($data, $name, $default);
    }

    public function setValue($name, $value)
    {
        $data = $this->getRawData();
        $data[$name] = $value;
        $this->setRawData($data);
        return $this;
    }

    public function unsetValue($name)
    {
        $data = $this->getRawData();
        if(isset($data[$name]))
            unset($data[$name]);
        $this->setRawData($data);
        return $this;
    }

    public function issetValue($name)
    {
        $data = $this->getRawData();
            return isset($data[$name]);
    }

}