原则 2:保存复杂关系中的实体

问题描述

我在我的教义实体中有以下关系:

I have the following relationships within my doctrine entities:

最喜欢的食谱

/**
 * @ManyToOne(targetEntity="User", inversedBy="favoriteRecipes")
 */
private $user;

/**
 * @ManyToOne(targetEntity="Recipe", inversedBy="favoriteRecipes")
 */
private $recipe;

食谱

/**
 * @OneToMany(targetEntity="FavoriteRecipe", mappedBy="user")
 */
private $favoriteRecipes;

用户

/**
 * @OneToMany(targetEntity="FavoriteRecipe", mappedBy="user")
 */
private $favoriteRecipes;

在我的一个控制器中，我有以下代码:

In one of my controllers I have the following code:

$favoriteRecipe = new EntitiesFavoriteRecipe();
$favoriteRecipe->setRecipe($recipe);
$favoriteRecipe->setUser($user);
$this->_em->persist($favoriteRecipe);
$this->_em->flush();

但这会引发异常并显示以下消息:

But this throws an exception with the following message:

通过未配置的关系发现新实体级联持久化操作:实体用户@00000000408bd010000000007cb1380e.明确坚持新实体或配置级联持久化操作关系.

A new entity was found through a relationship that was not configured to cascade persist operations: EntitiesUser@00000000408bd010000000007cb1380e. Explicitly persist the new entity or configure cascading persist operations on the relationship.

如何正确创建和保存 FavoriteRecipe 实体?

How can I correctly create and save a FavoriteRecipe entity?

推荐答案

您是否为所有关系实体设置了级联选项?这是通过设置级联属性来完成的，例如:cascade={persist", remove"}

Did you set the cascade option for all your relational entities? This is done by setting the cascade property for example: cascade={"persist", "remove"}

也许这个页面:https://www.doctrine-project.org/projects/doctrine-orm/en/2.9/reference/working-with-associations.html

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