首先：我得到的错误是：必须管理传递给选择字段的实体
我有这些实体： - 用户（属于一个或多个团队） - 团队（有一个或两个用户） - 挑战（有2个团队）
我想构建一个ChallengeType表单，用户可以为两个团队填写两个用户并创建挑战 . 我想我需要一个嵌入式表格 .
我已经制作了一个TeamType Form类:(我希望从中获得一个选择框，其中列出了所有用户）
<?php
namespace Tennisconnect\DashboardBundle\Form\Type;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilder;
class TeamType extends AbstractType
{
public function buildForm(FormBuilder $builder, array $options)
{
$builder->add('players', 'entity', array(
'class' => 'TennisconnectUserBundle:User',
'multiple' => true
));
}
public function getName()
{
return 'team';
}
public function getDefaultOptions(array $options)
{
return array('data_class' => 'Tennisconnect\DashboardBundle\Entity\Team');
}
}
这是ChallengeType表单类：
<?php
namespace Tennisconnect\DashboardBundle\Form\Type;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilder;
class ChallengeType extends AbstractType
{
public function buildForm(FormBuilder $builder, array $options)
{
$builder->add('teams', 'collection', array('type' => new TeamType()));
}
public function getName()
{
return 'challenge';
}
public function getDefaultOptions(array $options)
{
return array('data_class' => 'Tennisconnect\DashboardBundle\Entity\Challenge');
}
}
挑战实体：
namespace Tennisconnect\DashboardBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
use Tennisconnect\DashboardBundle\Entity\Team;
use Symfony\Component\Validator\Constraints as Assert;
use Doctrine\Common\Collections\ArrayCollection;
/**
* @ORM\Entity
* @ORM\Table(name="challenge")
*/
class Challenge
{
/**
* @ORM\Id
* @ORM\Column(type="integer")
* @ORM\GeneratedValue(strategy="AUTO")
*/
protected $id;
/**
* @ORM\ManyToMany(targetEntity="Team", mappedBy="teams")
*/
protected $teams;
public function __construct()
{
$this->teams = new ArrayCollection();
}
/**
* Get id
*
* @return integer
*/
public function getId()
{
return $this->id;
}
/**
* Add teams
*
* @param Tennisconnect\DashboardBundle\Entity\Team $teams
*/
public function addTeam(Team $teams)
{
$this->teams[] = $teams;
}
/**
* Get teams
*
* @return Doctrine\Common\Collections\Collection
*/
public function getTeams()
{
return $this->teams;
}
}
团队实体：
namespace Tennisconnect\DashboardBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\Validator\Constraints as Assert;
use Doctrine\Common\Collections\ArrayCollection;
use Tennisconnect\UserBundle\Entity\User;
use Tennisconnect\DashboardBundle\Entity\Challenge;
use Tennisconnect\DashboardBundle\Entity\Match;
/**
* @ORM\Entity
* @ORM\Table(name="team")
*/
class Team
{
/**
* @ORM\Id
* @ORM\Column(type="integer")
* @ORM\GeneratedValue(strategy="AUTO")
*/
protected $id;
/**
* @ORM\ManyToMany(targetEntity="Tennisconnect\UserBundle\Entity\User", mappedBy="teams")
*/
protected $players;
/**
* @ORM\ManyToMany(targetEntity="challenge", inversedBy="teams", cascade= {"persist"})
*/
protected $challenges;
/**
* @ORM\ManyToMany(targetEntity="Match", inversedBy="teams")
*/
protected $matches;
public function __construct()
{
$this->players = new ArrayCollection();
}
/**
* Get id
*
* @return integer
*/
public function getId()
{
return $this->id;
}
/**
* Add players
*
* @param Tennisconnect\UserBundle\Entity\User $players
*/
public function addUser(User $players)
{
$this->players[] = $players;
}
/**
* Get players
*
* @return Doctrine\Common\Collections\Collection
*/
public function getPlayers()
{
return $this->players;
}
/**
* Add matches
*
* @param Tennisconnect\DashboardBundle\Entity\Match $matches
*/
public function addMatch(Match $matches)
{
$this->matches[] = $matches;
}
/**
* Get matches
*
* @return Doctrine\Common\Collections\Collection
*/
public function getMatches()
{
return $this->matches;
}
/**
* Add challenges
*
* @param Tennisconnect\DashboardBundle\Entity\challenge $challenges
*/
public function addchallenge(challenge $challenges)
{
$this->challenges[] = $challenges;
}
/**
* Get challenges
*
* @return Doctrine\Common\Collections\Collection
*/
public function getChallenges()
{
return $this->challenges;
}
}
挑战控制器：
class ChallengeController extends Controller
{
public function newAction()
{
$challenge = new Challenge();
$form = $this->createForm(new ChallengeType(), $challenge);
return $this->render('TennisconnectDashboardBundle:Challenge:new.html.twig', array('form' => $form->createView()));
}
}
3 回答
您已创建显示
ManyToMany集合的表单;将formbuilder中的multiple选项设置为true（默认为false，从根本上与ToMany关系冲突） .如果您的错误
Entities passed to the choice field must be managed. Maybe persist them in the entity manager?与2个实体之间存在ManyToMany关系，则在使用表单类型时，它可能来自您的实体 constructor ：如果您的表单是“TeamType”，请尝试删除“Team”实体的ArrayCollection初始化 .
您的团队成员：
问题已经解决了 . 我必须在ChallengeType类中为我的集合添加“allow_add”选项 .
挑战控制器类也需要一些编辑 . 我将2个团队添加到Challenge对象中，然后将其传递给表单 .