Symfony sort form without creating table in db?

Question

symfony

Comrades, is it possible to somehow create a form without creating a table in the database.
My Entity:

<?php

namespace AppBundle\Entity;

use Doctrine\ORM\Mapping as ORM;
use Doctrine\Common\Collections\ArrayCollection;

/**
 * @package AppBundle\Entity
 * @ORM\Entity
 */
class FilterArea
{
    /**
     * @ORM\Column(type="integer")
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    protected $id;

    /**
     * @ORM\Column(type="date");
     */
    protected $age;

    /**
     * @ORM\Column(type="boolean");
     */
    protected $sex;

    /**
     * @ORM\ManyToOne(targetEntity="SocialNetwork", inversedBy="filter")
     * @ORM\JoinColumn(name="rm_sn", referencedColumnName="id_sn", nullable=false)
     */
    protected $social_network;


    /**
     * @ORM\ManyToOne(targetEntity="City", inversedBy="filter")
     * @ORM\JoinColumn(name="rm_city", referencedColumnName="id_city", nullable=false)
     */
    protected $citys;


    /**
     * Get idArea
     *
     * @return integer
     */
    public function getIdArea()
    {
        return $this->id_area;
    }

    /**
     * Set age
     *
     * @param \DateTime $age
     *
     * @return FilterArea
     */
    public function setAge($age)
    {
        $this->age = $age;

        return $this;
    }

    /**
     * Get age
     *
     * @return \DateTime
     */
    public function getAge()
    {
        return $this->age;
    }

    /**
     * Set sex
     *
     * @param boolean $sex
     *
     * @return FilterArea
     */
    public function setSex($sex)
    {
        $this->sex = $sex;

        return $this;
    }

    /**
     * Get sex
     *
     * @return boolean
     */
    public function getSex()
    {
        return $this->sex;
    }

    /**
     * Set socialNetwork
     *
     * @param \AppBundle\Entity\SocialNetwork $socialNetwork
     *
     * @return FilterArea
     */
    public function setSocialNetwork(\AppBundle\Entity\SocialNetwork $socialNetwork)
    {
        $this->social_network = $socialNetwork;

        return $this;
    }

    /**
     * Get socialNetwork
     *
     * @return \AppBundle\Entity\SocialNetwork
     */
    public function getSocialNetwork()
    {
        return $this->social_network;
    }

    /**
     * Set citys
     *
     * @param \AppBundle\Entity\City $citys
     *
     * @return FilterArea
     */
    public function setCitys(\AppBundle\Entity\City $citys)
    {
        $this->citys = $citys;

        return $this;
    }

    /**
     * Get citys
     *
     * @return \AppBundle\Entity\City
     */
    public function getCitys()
    {
        return $this->citys;
    }

    /**
     * Get id
     *
     * @return integer
     */
    public function getId()
    {
        return $this->id;
    }
}

Answer 1

As I understand it, create a form and "attach" to it an Entity that does not belong to the ORM? Of course you can .