Doctrine - 通过关系发现了一个新实体 [英] Doctrine - A new entity was found through the relationship

问题描述

两周以来，我们在尝试刷新新元素时遇到了这个问题:

since 2 weeks, we are having this problem while trying to flush new elements:

关键:DoctrineORMORMInvalidArgumentException:

CRITICAL: DoctrineORMORMInvalidArgumentException:

通过关系 'Comment#capture' 发现了一个新实体，该实体未配置为对实体进行级联持久化操作

A new entity was found through the relationship 'Comment#capture' that was not configured to cascade persist operations for entity

但是capture已经在数据库中了，我们通过findOneBy获取它，所以如果我们级联持久化它，或者持久化它，我们得到一个

But the capture is already in the database, and we are getting it by a findOneBy, so if we cascade persist it, or persist it, we get a

违反表约束:重复条目.

Table constraint violation: duplicate entry.

评论是在循环中创建的，具有不同的捕获，有一个新的，并设置了所有必填字段.

The comments are created in a loop with differents captures, with a new, and all required field are set.

所有实体都被持久化和/或通过 findOne(并且都是有效的)获得，刷新仍然失败.

With all of the entities persisted and / or got by a findOne (and all valid), the flush still fails.

我已经在这个问题上有一段时间了，所以请帮助我

I'm on this issue since a while, so please help me

推荐答案

我遇到了同样的问题，而且是同一个 EntityManager.我想插入一个与ManyToOne 相关的对象.而且我不想要 cascade persist.

I had the same problem and it was the same EntityManager. I wanted to insert an object related ManyToOne. And I don't want a cascade persist.

示例:

$category = $em->find("Category", 10);

$product = new Product();
$product->setCategory($category)

$em->persist($product);
$em->flush();

这对我来说抛出了同样的异常.

This throws the same exception for me.

所以解决方案是:

$category = $em->find("Category", 10);

$product = new Product();
$product->setCategory($category)

$em->merge($product);
$em->flush();

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