小编Ale*_*lex的帖子

我正在尝试将Firebase的Rule通配符与子项比较混合使用.

我正在读一个价值为'4'的孩子.

当我进行文字比较时,模拟器会给我绿灯(如下所示):

{
  "rules": {
    "die": {
      "rolls": {
        "$i": {
          ".read": "4 == root.child('die/i').val()"
        }
      },
      "i": {
        ".read": true,
        ".write": true
      }
    }
  }
}

输出(成功):

Type    read
Location    /die/rolls/4
Data    null
Auth    null
Read successful
Line 7 (/die/rolls/4)
read: "4 == root.child('die/i').val()"

但是通配符比较失败了.为什么？

{
  "rules": {
    "die": {
      "rolls": {
        "$i": {
          ".read": "$i == root.child('die/i').val()"
        }
      },
      "i": {
        ".read": true,
        ".write": true
      }
    }
  }
}

输出(失败):

Type    read
Location    /die/rolls/4
Data    null
Auth …