我正在为Symfony 2中以ORM为学说的ManyToMany关系无法正常工作而苦苦挣扎

Question

嗨，谢谢大家。

我对Symfony和学说还很陌生，我无法弄清楚为什么我的票证实体在没有ManyToMany Realtionship的情况下被存储。 我非常努力，做了几天我发现的一切，但最终我需要帮助。

我们来了

票

<pre>
    namespace AppBundle\Entity;

    use Doctrine\ORM\Mapping as ORM;
    use Doctrine\Common\Collections\ArrayCollection;
    use Doctrine\Common\Collections\Collection;
    use AppBundle\Entity\Computer; 

    /**
     * @ORM\Entity
     * @ORM\Table(name="tickets")
     */
    class Ticket {

        /**
         * @ORM\Id
         * @ORM\Column(type="integer")
         * @ORM\GeneratedValue(strategy="AUTO")
         */
        protected $id;

        /**
         * @ORM\Column(type="integer")
         */
        protected $creator;

        /**
         * @ORM\Column(type="integer")
         */
        protected $owner;

        /**
         * @ORM\ManyToOne(targetEntity="Category", inversedBy="tickets")
         * @ORM\JoinColumn(name="category_id", referencedColumnName="id")
         */
        private $category;

        /**
         * @ORM\ManyToOne(targetEntity="Type", inversedBy="tickets")
         * @ORM\JoinColumn(name="type_id", referencedColumnName="id")
         */
        protected $type;

        /**
         * @ORM\Column(type="string")
         */
        protected $subject;

        /**
         * @ORM\ManyToMany(targetEntity="Computer", inversedBy="tickets", cascade={"persist"})
         * @ORM\JoinTable(name="inventory_computer_join",
         *      joinColumns={@ORM\JoinColumn(name="ticket_id", referencedColumnName="id")},
         *      inverseJoinColumns={@ORM\JoinColumn(name="computer_id", referencedColumnName="id")}
         *)
         */
        protected $computer;
    [...]
     /**
         * Add computer
         *
         * @param \AppBundle\Entity\Computer $computer
         *
         * @return Ticket
         */
        public function addComputer(\AppBundle\Entity\Computer $computer)
        {
            $this->computers[] = $computer;
            return $this;
        }

        /**
         * Remove computer
         * @param \AppBundle\Entity\Computer $computer
         */
        public function removeComputer(\AppBundle\Entity\Computer $computer)
        {
            $this->computers->removeElement($computer);
        }

        /**
         * Get computers
         * @return \Doctrine\Common\Collections\Collection
         */
        public function getComputers()
        {
            return $this->computers;
        }
    }
</pre>

电脑

<pre>
    namespace AppBundle\Entity;

    use Doctrine\ORM\Mapping as ORM;
    use Doctrine\Common\Collections\ArrayCollection;
    use Doctrine\Common\Collections\Collection;
    use AppBundle\Entity\Ticket;

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

        /**
         * @ORM\ManyToMany(targetEntity="Ticket", mappedBy="computer")
         */
        protected $tickets;
        [...]
      /**
         * Add ticket
         *
         * @param \AppBundle\Entity\Ticket $ticket
         *
         * @return Computer
         */
        public function addTicket(\AppBundle\Entity\Ticket $ticket)
        {
            $this->tickets[] = $ticket;

            return $this;
        }
</pre>

控制者

<pre>
    /**
         * @Route("admint/createTicket", name="AdminTicketErstellen")
         */
        public function AdminCreateTicketAction(Request $request) {

            $ticket = new Ticket;
            $form = $this->createForm(TicketType::class, $ticket, array(
                'method' => 'GET'
            ));

            $form->handleRequest($request);

            if ($form->isSubmitted()) {

                $em = $this->getDoctrine()->getManager();
                $em->persist($ticket);
                $em->flush();

                return $this->redirectToRoute('measure_servers');
            }

            return $this->render( 'sysadmin/pages/AdminCreateTicket.html.twig', array(
                    'ticket' => $form->createView(),
                )
            );
        }
</pre>

Answer 1

如果您想存储ManyToMany，请尝试；

第一：

更改protected $commputer; 在Ticket.php实体中protected $computers 。 因为，您在addComputer（）或removeComputer（）处使用$ this-> computers。

第二个： * @ORM\\ManyToMany(targetEntity="Ticket", mappedBy="computer")到Computer.php实体上的mappedBy="computers" 。

您可以使用计算机存储票证，可以在控制器上尝试：$ ticket = new Ticket（）;。 $ computer =新的Computer（）;

$ticket->setCreator(4);
$ticket->setOwner(3);
$computer->addTicket($ticket);
$ticket->addComputer($computer);

$em = $this->getDoctrine()->getManager();
$em->persist($computer);
$em->persist($ticket);
$em->flush();