为什么树无效？

Question

我有一个使用 doctrine extension, tree behaviuor 的实体，我在树中发现了问题，但不知道是什么原因。

我的实体：

MyEntity:
    type:  entity
    gedmo:
        tree:
            type: nested
    id:
        id:
            type: integer
            generator:
                strategy: AUTO
    fields:
#        ...
        lft:
            type: integer
            gedmo:
                - treeLeft
        rgt:
            type: integer
            gedmo:
                - treeRight
        lvl:
            type: integer
            gedmo:
                - treeLevel
        root:
            type: integer
            gedmo:
                - treeRoot
        createdAt:
            column: created_at
            type: datetime
            gedmo:
                timestampable:
                    on: create
        updatedAt:
            column: updated_at
            type: datetime
            gedmo:
                timestampable:
                    on: update
    oneToMany:
        children:
            targetEntity: MyEntity
            mappedBy: parent
            orderBy:
                lft: ASC
    manyToOne:
        parent:
            targetEntity: MyEntity
            inversedBy: children
            joinColumn:
                name: parent_id
                referencedColumnName: id
                onDelete: "restrict"
            gedmo:
                - treeParent

树问题：（由verify()方法报告）

  0 => "index [8], duplicate on tree root: 1"
  1 => "index [9], duplicate on tree root: 1"
  2 => "index [20], duplicate on tree root: 1"
  3 => "index [21], duplicate on tree root: 1"
  4 => "node [8], left is greater than right on tree root: 1"
  5 => "node [10] left is less than parent`s [7] left value"
  6 => "node [16] right is greater than parent`s [7] right value"
  7 => "node [19] right is greater than parent`s [6] right value"
  8 => "node [20] right is greater than parent`s [6] right value"
  9 => "node [21] right is greater than parent`s [6] right value"
  10 => "node [22] right is greater than parent`s [6] right value"
  11 => "node [23] right is greater than parent`s [6] right value"
  12 => "node [24] right is greater than parent`s [6] right value"
  13 => "node [31] left is less than parent`s [30] left value"
  14 => "node [35] left is less than parent`s [8] left value"
  15 => "node [36] left is less than parent`s [8] left value"

table data

Answer 1

我发现了问题，当我通过 $em->remove 方法删除实体时，学说扩展假定 onDelete=cascade 用于实体并更改树的 lft 和 rgt 值，然后运行查询删除实体（和所有 children），但我的实体有 onDelete=restrict，然后更新 lft 和 rgt 值，但 children 未被删除，这在树

中引发错误

Answer 2

我遇到了完全相同的问题。也许这个答案会对其他人有所帮助。

Gedmo/Tree with the nested set 在删除事务开始之前执行叶节点中的更改。因此，即使事务被回滚，更新的更改仍然存在。要解决这个问题，您应该先手动启动交易。

参考。 https://github.com/doctrine-extensions/DoctrineExtensions/issues/1062 & https://github.com/doctrine-extensions/DoctrineExtensions/blob/main/doc/transaction-safety.md

为什么树无效？

Why tree is invalid?

symfony

doctrine-orm

tree

doctrine-extensions

stofdoctrineextensions