Question

我有一个使用doctrine extension, tree behaviuor的实体，我在树中发现了问题并且不知道它的原因。

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:(通过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。

具有嵌套集的 Gedmo/Tree 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。要解决您应该先手动启动事务。

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

Answer 2

我发现问题，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＆amp;改变lft＆amp;树的rgt值，然后运行查询以删除实体（和所有子项），但我的实体有onDelete=restrict，然后是lft＆amp; rgt值已更新，但未删除子项，并且在树中出现此错误

为什么树无效？

2 个答案: