.remove()方法的Firebase安全规则 [英] Firebase Security Rules for .remove () method

问题描述

我想在我的数据上限制.remove()方法-仅允许作者/创建者具有.remove节点的能力.这可能吗?

I want to restrict .remove() method on my data - only allowing the author/creator the ability to .remove the node. Is this possible?

我有标准用户树和一对数据树geoFire和一个命名细节.详细信息"的节点包含时间戳记和用户(与auth.uid匹配)之类的条目.

I have the standard users tree and a pair of data trees geoFire and one named details. 'Details' has nodes that contain entries like timestamp and user (which matches auth.uid).

推荐答案

Firebase中的删除意味着您正在将无/空数据写入当前包含数据的位置:

A remove in Firebase means that you're writing no/empty data to a location that currently contains data:

".write": "!data.exists() || newData.exists()"

确保我拥有所有这些的快速表格:

Quick table to ensure I got all of them:

data.     newData.
exists()  exists()  .write
--------+---------+--------
false     false     true
false     true      true
true      false     false
true      true      true

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