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        原则 2:保存复杂关系中的实体

        Doctrine 2: Saving Entity in Complex Relationship(原则 2:保存复杂关系中的实体)
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                • 本文介绍了原则 2:保存复杂关系中的实体的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着跟版网的小编来一起学习吧!

                  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

                  这篇关于原则 2:保存复杂关系中的实体的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持跟版网!

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