我可以在 Sonata Admin 控制器中使用 prePersist/preUpdate 来持久化多个对象吗？
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【中文标题】我可以在 Sonata Admin 控制器中使用 prePersist/preUpdate 来持久化多个对象吗？【英文标题】：Can I use prePersist/preUpdate in Sonata Admin controller to persist more than one object? 【发布时间】：2016-06-11 14:41:27 【问题描述】：我有这个Alias 实体：
use Gedmo\Timestampable\Traits\TimestampableEntity;
class Alias
use IdentifierAutogeneratedTrait;
use TimestampableEntity;
use ActiveTrait;
/**
* @var string
* @ORM\Column(type="string", length=150)
*/
private $name;
/**
* Command associated to the alias.
*
* @var Command[]
* @ORM\ManyToMany(targetEntity="Command", mappedBy="aliases", cascade="persist")
*/
private $commands;
...
我有这个管理员控制器：
class AliasAdmin extends Admin
protected function configureFormFields(FormMapper $formMapper)
$formMapper
->add('name', null, array('required' => true))
->add('active', null, array('required' => false));
...
public function prePersist($alias)
// remove extra white spaces
$noWhiteSpaces = str_replace(' ', '', $alias->getName());
// split into several names
$aliasArr = explode(',', $noWhiteSpaces);
public function preUpdate($alias)
...
当我在视图上添加一个新的Alias 时 - 意味着表单本身 - 我可以在 name 输入字段上写一个值，例如：value1 或者我可以写多个值以逗号分隔：@ 987654327@。如果我在提交表单时在 name 字段上只有一个值，那么将没有问题，但如果我有多个逗号分隔作为第二个示例，那么我应该在 prePersist/preUpdate 方法上检查它们以便拆分他们并为每个name 创建一个Alias，我该怎么做？如果您看一下prePersist 方法，您会更清楚地看到我在谈论如何在新的$aliasArr 中为每个名称创建一个新的别名，有什么帮助吗？
更新： TimestampableEntity 未处理，为什么？
在尝试了@m-khalid-junaid 的解决方案后，由于NOT NULL 约束，我以以下错误结束，但我不知道为什么。看代码：
class AliasAdminController extends Controller
/**
* @inheritdoc
*/
public function createAction(Request $request = null)
// the key used to lookup the template
$templateKey = 'edit';
if (false === $this->admin->isGranted('CREATE'))
throw new AccessDeniedException();
$object = $this->admin->getNewInstance();
$this->admin->setSubject($object);
/** @var $form \Symfony\Component\Form\Form */
$form = $this->admin->getForm();
$form->setData($object);
if ($this->getRestMethod() == 'POST')
$form->submit($this->get('request'));
$isFormValid = $form->isValid();
// persist if the form was valid and if in preview mode the preview was approved
if ($isFormValid && (!$this->isInPreviewMode() || $this->isPreviewApproved()))
if (false === $this->admin->isGranted('CREATE', $object))
throw new AccessDeniedException();
try
$aliasArr = $this->toStrings($object->getName());
if (count($aliasArr) > 1)
$object->setName($aliasArr[0]);
$object = $this->admin->create($object);
unset($aliasArr[0]);
$entityManager = $this->getDoctrine()->getManager();
foreach ($aliasArr as $alias)
$newAlias = new Alias();
$newAlias->setName($alias);
$entityManager->persist($newAlias);
$entityManager->flush();
else
$object = $this->admin->create($object);
if ($this->isXmlHttpRequest())
return $this->renderJson(array(
'result' => 'ok',
'objectId' => $this->admin->getNormalizedIdentifier($object),
));
$this->addFlash(
'sonata_flash_success',
$this->admin->trans(
'flash_create_success',
array('%name%' => $this->escapehtml($this->admin->toString($object))),
'SonataAdminBundle'
)
);
// redirect to edit mode
return $this->redirectTo($object);
catch (ModelManagerException $e)
$this->logModelManagerException($e);
$isFormValid = false;
// show an error message if the form failed validation
if (!$isFormValid)
if (!$this->isXmlHttpRequest())
$this->addFlash(
'sonata_flash_error',
$this->admin->trans(
'flash_create_error',
array('%name%' => $this->escapeHtml($this->admin->toString($object))),
'SonataAdminBundle'
)
);
elseif ($this->isPreviewRequested())
// pick the preview template if the form was valid and preview was requested
$templateKey = 'preview';
$this->admin->getShow();
$view = $form->createView();
// set the theme for the current Admin Form
$this->get('twig')->getExtension('form')->renderer->setTheme($view, $this->admin->getFormTheme());
return $this->render($this->admin->getTemplate($templateKey), array(
'action' => 'create',
'form' => $view,
'object' => $object,
));
/**
* @inheritdoc
*/
public function editAction($id = null)
// the key used to lookup the template
$templateKey = 'edit';
$id = $this->get('request')->get($this->admin->getIdParameter());
$object = $this->admin->getObject($id);
if (!$object)
throw new NotFoundHttpException(sprintf('unable to find the object with id : %s', $id));
if (false === $this->admin->isGranted('EDIT', $object))
throw new AccessDeniedException();
$this->admin->setSubject($object);
/** @var $form \Symfony\Component\Form\Form */
$form = $this->admin->getForm();
$form->setData($object);
if ($this->getRestMethod() == 'POST')
$form->submit($this->get('request'));
$isFormValid = $form->isValid();
// persist if the form was valid and if in preview mode the preview was approved
if ($isFormValid && (!$this->isInPreviewMode() || $this->isPreviewApproved()))
try
$aliasArr = $this->toStrings($object->getName());
if (count($aliasArr) > 1)
$object->setName($aliasArr[0]);
$object = $this->admin->update($object);
unset($aliasArr[0]);
$entityManager = $this->getDoctrine()->getManager();
foreach ($aliasArr as $alias)
$newAlias = new Alias();
$newAlias->setName($alias);
$entityManager->persist($newAlias);
$entityManager->flush();
else
$object = $this->admin->update($object);
if ($this->isXmlHttpRequest())
return $this->renderJson(array(
'result' => 'ok',
'objectId' => $this->admin->getNormalizedIdentifier($object),
));
$this->addFlash(
'sonata_flash_success',
$this->admin->trans(
'flash_edit_success',
array('%name%' => $this->escapeHtml($this->admin->toString($object))),
'SonataAdminBundle'
)
);
// redirect to edit mode
return $this->redirectTo($object);
catch (ModelManagerException $e)
$this->logModelManagerException($e);
$isFormValid = false;
// show an error message if the form failed validation
if (!$isFormValid)
if (!$this->isXmlHttpRequest())
$this->addFlash(
'sonata_flash_error',
$this->admin->trans(
'flash_edit_error',
array('%name%' => $this->escapeHtml($this->admin->toString($object))),
'SonataAdminBundle'
)
);
elseif ($this->isPreviewRequested())
// enable the preview template if the form was valid and preview was requested
$templateKey = 'preview';
$this->admin->getShow();
$view = $form->createView();
// set the theme for the current Admin Form
$this->get('twig')->getExtension('form')->renderer->setTheme($view, $this->admin->getFormTheme());
return $this->render($this->admin->getTemplate($templateKey), array(
'action' => 'edit',
'form' => $view,
'object' => $object,
));
private function logModelManagerException($e)
$context = array('exception' => $e);
if ($e->getPrevious())
$context['previous_exception_message'] = $e->getPrevious()->getMessage();
$this->getLogger()->error($e->getMessage(), $context);
private function toStrings($string)
$noWhiteSpaces = str_replace(' ', '', $string);
return explode(',', $noWhiteSpaces);
这是错误：
[2016-02-28 11:10:36] doctrine.DEBUG: "START TRANSACTION" [] []
[2016-02-28 11:10:36] doctrine.DEBUG: INSERT INTO cm_alias (name, created_at, updated_at, active) VALUES (?, ?, ?, ?) "1":"alias1","2":null,"3":null,"4":true []
[2016-02-28 11:10:36] doctrine.DEBUG: "ROLLBACK" [] []
[2016-02-28 11:10:36] app.ERROR: Failed to create object: PlatformAdminBundle\Entity\Alias "exception":"[object] (Sonata\\AdminBundle\\Exception\\ModelManagerException(code: 0): Failed to create object: PlatformAdminBundle\\Entity\\Alias at /var/www/html/platform.sonata/vendor/sonata-project/doctrine-orm-admin-bundle/Model/ModelManager.php:142, Doctrine\\DBAL\\Exception\\NotNullConstraintViolationException(code: 0): An exception occurred while executing 'INSERT INTO cm_alias (name, created_at, updated_at, active) VALUES (?, ?, ?, ?)' with params [\"alias1\", null, null, 1]:\n\nSQLSTATE[23000]: Integrity constraint violation: 1048 Column 'created_at' cannot be null at /var/www/html/platform.sonata/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractmysqlDriver.php:112, Doctrine\\DBAL\\Driver\\PDOException(code: 23000): SQLSTATE[23000]: Integrity constraint violation: 1048 Column 'created_at' cannot be null at /var/www/html/platform.sonata/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOStatement.php:93, PDOException(code: 23000): SQLSTATE[23000]: Integrity constraint violation: 1048 Column 'created_at' cannot be null at /var/www/html/platform.sonata/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOStatement.php:91)","previous_exception_message":"An exception occurred while executing 'INSERT INTO cm_alias (name, created_at, updated_at, active) VALUES (?, ?, ?, ?)' with params [\"alias1\", null, null, 1]:\n\nSQLSTATE[23000]: Integrity constraint violation: 1048 Column 'created_at' cannot be null" []
为什么TimestampableEntity trait 没有被新的管理控制器处理？我在这里缺少什么？
【问题讨论】：
【参考方案1】：可能是这样的：
public function prePersist($alias)
// remove extra white spaces
$noWhiteSpaces = str_replace(' ', '', $alias->getName());
// split into several names
$aliasArr = explode(',', $noWhiteSpaces);
$currentAliasName = $aliasArr[0]; // Use the first name for the Alias created by your admin class.
$alias->setName($currentAliasName);
unset($aliasArr[0]);
$em = $this->getConfigurationPool()->getContainer()->getDoctrine()->getManager();
foreach ($aliasArr as $aliasName)
$newAlias = new Alias();
$newAlias->setName($aliasName);
$newAlias->setActive(?);
$em->persist($newAlias);
$em->flush($newAlias);
【讨论】：
我们应该坚持使用prePersist/preUpdate 方法吗？这不是打算在持久化对象之前对对象进行更改而不是持久化还是我完全错了？
调用 prePersist/preUpdate 方法仅对当前创建/更新的对象进行更改。但我们也可以使用它来创建/更新辅助对象，例如文件上传处理。所有者此时需要一个自定义技巧来创建对象，因此他可以完美地做到这一点。有点脏，因为对象是同类型的电流，但这是他要求的。【参考方案2】：
如果您想添加具有不同别名的相同对象，最好为您的管理类创建一个 CRUDController 控制器，一旦您拥有 CRUDController，您可以覆盖基类的 createAction 和 editAction 并在此处实现您的逻辑当前对象的 prePresist/preUpdate 事件使用控制器为您的对象创建具有不同信息的副本。我在下面只提到了必要的代码，您可以从奏鸣曲的 CRUDController 复制并在 editAction 中实现相同的逻辑
public function createAction(Request $request = null)
// .. some code here copy from base class
try
$noWhiteSpaces = str_replace(' ', '', $object->getName());
// split into several names
$aliases = explode(',', $noWhiteSpaces);
if (count($aliases) > 1)
$object->setName($aliases[0]);
$object = $this->admin->create($object);
unset($aliases[0]);
$DM = $this->getDoctrine()->getManager();
foreach ($aliases as $alias)
$newAlias = new Alias();
$newAlias->setName($alias);
$DM->persist($newAlias);
$DM->flush();
else
$object = $this->admin->create($object);
catch (ModelManagerException $e)
$this->handleModelManagerException($e);
$isFormValid = false;
// .. some code here copy from base class
编辑created_at not null 错误
您需要在您的别名实体中定义一个构造函数，并使用DateTime 对象初始化您的createdAt 属性
/**
* Constructor
*/
public function __construct()
$this->createdAt = new \DateTime('now');
【讨论】：
你能看看我对 OP 所做的编辑（更新）吗？谢谢以上是关于我可以在 Sonata Admin 控制器中使用 prePersist/preUpdate 来持久化多个对象吗？的主要内容，如果未能解决你的问题，请参考以下文章
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