在Cloud Firestore安全规则中将字符串强制转换为Int [英] Casting String to Int in Cloud Firestore Security Rules

问题描述

我来自这个问题.我考虑开始赏金，因为它已经几个月没有受到任何关注，并且随着时间的推移，我没有看到任何答案，但是我认为我的愿望有所不同.

I am coming from this question. I thought about starting a bounty on it because it has not received any attention in months and over the time I did not see any answers, but I think that my desire is a bit different.

如果有一个数字作为文档的字段，但指定为string:

If there is a number as a field of a document, but specified as a string:

出现 Firestore规则的问题.

这样的检查变得不可能:

Checks like this become impossible:

resource.data.number > 11

不可能将字符串当作是 ints 来比较.

模拟器异常如下:

Unsupported operation error. Received: string > int. Expected: constraint > constraint, int > int, float > float, duration > duration, timestamp > timestamp, constraint > any, any > constraint. 

是否可以将我的操作转换为int > int?

推荐答案

签出此链接，向您展示如何在Firestore规则文档中将字符串转换为整数.

Check out this link that shows you how to convert strings to integers in the Firestore rules docs.

int("2") == 2
int(2.0) == 2

所以您的支票可能是:

int(resource.data.number) > 11

这篇关于在Cloud Firestore安全规则中将字符串强制转换为Int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IT屋！