AutoComplete form (airports )symfony2

I’m new in symfony2 and i’m tryting to create a autoComplete form with all airports.I installed GenemuFormBundle and i created a database, but i don’t really understand how to make it works.This is what i did already:

Any idea how to do it ? Thank you

PostType.php

<?php

namespace FLY\BookingsBundle\Form;

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;

class PostType extends AbstractType
{
    /**
     * @param FormBuilderInterface $builder
     * @param array $options
     */
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder




        ->add('departure', 'genemu_jqueryautocomplete_entity', array(
            'class' => 'FLYBookingsBundle\Entity\Post',
            'property' => 'departure',
        ))
        ->add('arrival', 'genemu_jqueryautocomplete_entity', array(
            'class' => 'FLYBookingsBundle\Entity\Post',
            'property' => 'arrival',
        ))

        ->add('departuredate')
        ->add('arrivaldate')
        ->add('compagny','text')
        ->add('price')

        ;
    }

Post.php

<?php

namespace FLY\BookingsBundle\Entity;

use Doctrine\ORM\Mapping as ORM;

/**
 * Post
 *
 * @ORM\Table()
 * @ORM\Entity(repositoryClass="FLY\BookingsBundle\Entity\PostRepository")
 */
class Post
{
    /**
     * @var integer
     *
     * @ORM\Column(name="id", type="integer")
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    private $id;

    /**
     * @var array
     *
     * @ORM\Column(name="departure", type="array")
     */
    private $departure;

    /**
     * @var array
     *
     * @ORM\Column(name="arrival", type="array")
     */
    private $arrival;

    /**
     * @var \DateTime
     *
     * @ORM\Column(name="departuredate", type="datetime")
     */
    private $departuredate;

    /**
     * @var \DateTime
     *
     * @ORM\Column(name="arrivaldate", type="datetime")
     */
    private $arrivaldate;

    /**
     * @var float
     *
     * @ORM\Column(name="pounds", type="float")
     */
    private $pounds;

    /**
     * @var float
     *
     * @ORM\Column(name="price", type="float")
     */
    private $price;

    /**
     * @var array
     *
     * @ORM\Column(name="compagny", type="array")
     */
    private $compagny;


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

    /**
     * Set departure
     *
     * @param array $departure
     * @return Post
     */
    public function setDeparture($departure)
    {
        $this->departure = $departure;

        return $this;
    }

    /**
     * Get departure
     *
     * @return array 
     */
    public function getDeparture()
    {
        return $this->departure;
    }

    /**
     * Set arrival
     *
     * @param array $arrival
     * @return Post
     */
    public function setArrival($arrival)
    {
        $this->arrival = $arrival;

        return $this;
    }

    /**
     * Get arrival
     *
     * @return array 
     */
    public function getArrival()
    {
        return $this->arrival;
    }

    /**
     * Set departuredate
     *
     * @param \DateTime $departuredate
     * @return Post
     */
    public function setDeparturedate($departuredate)
    {
        $this->departuredate = $departuredate;

        return $this;
    }

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

    /**
     * Set arrivaldate
     *
     * @param \DateTime $arrivaldate
     * @return Post
     */
    public function setArrivaldate($arrivaldate)
    {
        $this->arrivaldate = $arrivaldate;

        return $this;
    }

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

    /**
     * Set pounds
     *
     * @param float $pounds
     * @return Post
     */
    public function setPounds($pounds)
    {
        $this->pounds = $pounds;

        return $this;
    }

    /**
     * Get pounds
     *
     * @return float 
     */
    public function getPounds()
    {
        return $this->pounds;
    }

    /**
     * Set price
     *
     * @param float $price
     * @return Post
     */
    public function setPrice($price)
    {
        $this->price = $price;

        return $this;
    }

    /**
     * Get price
     *
     * @return float 
     */
    public function getPrice()
    {
        return $this->price;
    }

    /**
     * Set compagny
     *
     * @param array $compagny
     * @return Post
     */
    public function setCompagny($compagny)
    {
        $this->compagny = $compagny;

        return $this;
    }

    /**
     * Get compagny
     *
     * @return array 
     */
    public function getCompagny()
    {
        return $this->compagny;
    }
}


        /**
         * @param OptionsResolverInterface $resolver
         */
        public function setDefaultOptions(OptionsResolverInterface $resolver)
        {
            $resolver->setDefaults(array(
                'data_class' => 'FLY\BookingsBundle\Entity\Post'
            ));
        }

        /**
         * @return string
         */
        public function getName()
        {
            return 'fly_bookingsbundle_post';
        }
    }

index.html.twig

{% extends "::base.html.twig" %}
  {% block header %}
  {% endblock header %}

{% block content %}

  <h1>Post list</h1>

  <table class="records_list">
    <thead>
    <tr>
      <th>Id</th>
      <th>Departure</th>
      <th>Arrival</th>
      <th>Departuredate</th>
      <th>Arrivaldate</th>
      <th>Pounds</th>
      <th>Price</th>
      <th>Compagny</th>
      <th>Actions</th>
    </tr>
    </thead>
    <tbody>
    {% for entity in entities %}
      <tr>
        <td><a href="{{ path('post_show', { 'id': entity.id }) }}">{{ entity.id }}</a></td>
        <td>{{ entity.departure }}</td>
        <td>{{ entity.arrival }}</td>
        <td>{% if entity.departuredate %}{{ entity.departuredate|date('Y-m-d H:i:s') }}{% endif %}</td>
        <td>{% if entity.arrivaldate %}{{ entity.arrivaldate|date('Y-m-d H:i:s') }}{% endif %}</td>
        <td>{{ entity.pounds }}</td>
        <td>{{ entity.price }}</td>
        <td>{{ entity.compagny }}</td>
        <td>
          <ul>
            <li>
              <a href="{{ path('post_show', { 'id': entity.id }) }}">show</a>
            </li>
            <li>
              <a href="{{ path('post_edit', { 'id': entity.id }) }}">edit</a>
            </li>
          </ul>
        </td>
      </tr>
    {% endfor %}
    </tbody>
  </table>

  <ul>
    <li>
      <a href="{{ path('post_new') }}">
        Create a new entry
      </a>
    </li>
  </ul>


{% endblock content %}
{% block foot_script %}

{% endblock foot_script %}

{% block footer %} {% endblock footer %}