ExtraDataBundle/Entity/Traits/ExtraDataTrait.php

<?php

namespace ExtraDataBundle\Entity\Traits;

use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\Validator\Constraints as Assert;

trait ExtraDataTrait
{

    /**
     * @var string $extraData
     *
     * @ORM\Column(type="text", nullable=true)
     * 
     * @Assert\Callback(
     *  callback={"ExtraDataBundle\Validator\JSONValidator", "validate"}, 
     *  payload={"field"="extraData"}
     * )
     */
    private $extraData;


    /**
     * @return string
     */
    public function getExtraData()
    {
        return $this->extraData;
    }

    /**
     * @param string $extraData
     * 
     * @return $this
     */
    public function setExtraData($extraData = null)
    {
        $this->extraData = $extraData;

        return $this;
    }

    /**
     * @return array
     */
    public function jsonExtraData()
    {
        return json_decode($this->extraData, true);
    }

    /**
     * @param mixed $extraData
     * 
     * @return ExtraDataTrait
     */
    public function setJsonExtraData($extraData)
    {
        return $this->setExtraData(json_encode($extraData));
    }
    
    /**
     * @param string $key
     * 
     * @return mixed
     */
    public function getData($key)
    {
        $extraData = $this->jsonExtraData();
        $value = null;
        if (isset($extraData[$key])) {
            $value = $extraData[$key];
        }
        
        return $value;
    }

}