Tag.php

<?php

// src/AppBundle/Entity/Tag.php
namespace AppBundle\Entity;

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


/**
 * @ORM\Entity
 * @ORM\Table(name="Tag")
 */
class Tag
{
    /**
     * @ORM\Column(type="integer")
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="AUTO")
     *
     */
    private $id;


    /**
     * @ORM\Column(type="string", length=100)
     */
    private $tag;


    /**
     * @ORM\Column(type="datetime")
     */
    private $creato;


        /**
     * @var \Doctrine\Common\Collections\ArrayCollection|Articoli[]
     * @ORM\ManyToMany(targetEntity="Articolo", inversedBy="tags")
     * @ORM\JoinTable(
     *  name="tag_articoli",
     *  joinColumns={
     *      @ORM\JoinColumn(name="tag", referencedColumnName="id")
     *  },
     *  inverseJoinColumns={
     *      @ORM\JoinColumn(name="articolo", referencedColumnName="id")
     *  }
     * )
     */
    private $articoli;

    public function __construct()
    {
        $this->articoli = new ArrayCollection();
        $this->creato = new \DateTime("now");
    }
}