Firebase Admin SDK:设置/合并自定义用户声明 [英] Firebase Admin SDK: Set / Merge Custom User Claims

问题描述

Firebase是否可以像{ merge: true }这样的技巧来设置额外的/更多的自定义声明，而无需删除/覆盖旧变量?

Does Firebase have any trick like { merge: true } to set extra/more custom claims without delete/override the old variables?

复制步骤:

admin.auth().setCustomUserClaims(uid, { a: 'value' }) // Run this first
admin.auth().setCustomUserClaims(uid, { b: 'value' }) // Then run this after

结果:

{ b: 'value'}

预期结果:

{ a: 'value', b: 'value' }

还是我做错了什么?

推荐答案

用于

• customUserClaims :对象
  开发者声称要设置.如果传递null，则会删除现有的自定义声明.传递大于1000个字节的自定义声明有效负载会引发错误.自定义声明将添加到用户的ID令牌，该ID令牌将在每个经过身份验证的请求上传输.对于与配置文件无关的访问相关用户属性，请使用数据库或其他单独的存储系统.

• customUserClaims: Object
  The developer claims to set. If null is passed, existing custom claims are deleted. Passing a custom claims payload larger than 1000 bytes will throw an error. Custom claims are added to the user's ID token which is transmitted on every authenticated request. For profile non-access related user attributes, use database or other separate storage systems.

根据该描述尚不清楚，但是语句如果传递了null，则删除现有的自定义声明".提示每次调用setCustomUserClaims都会完全覆盖自定义声明.

It isn't entirely clear from this description, but the statement, "If null is passed, existing custom claims are deleted," provides a hint that the custom claims are completely overwritten with each call to setCustomUserClaims.

因此，需要对自定义声明进行如下设置:

Therefore, custom claims need to be set as follows:

claims = {
  a: 'value',
  b: 'value'
}

admin.auth().setCustomUserClaims(uid, claims) 

解决方法:addCustomUserClaims

可以创建一个辅助功能以合并到新的声明中.

Workaround: addCustomUserClaims

A helper function could be created to merge in new claims.

async function addCustomUserClaims(uid, claims) {
  const user = await admin.auth().getUser(uid)
  let updated_claims = user.customClaims || {}

  for (let property in claims) {
    if (Object.prototype.hasOwnProperty.call(claims, property)) {
      updated_claims[property] = claims[property]
    }
  }
  await admin.auth().setCustomUserClaims(uid, updated_claims)
}

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