Firebase 排序不起作用

Question

我遗漏了一些东西，或者 Fireabase 根本没有排序？？

https://dinosaur-facts.firebaseio.com/dinosaurs.json?orderBy=%22height%22&print=pretty

{    
  "bruhathkayosaurus" : {
    "appeared" : -70000000,
    "height" : 25,
    "length" : 44,
    "order" : "saurischia",
    "vanished" : -70000000,
    "weight" : 135000
  },
  "lambeosaurus" : {
    "appeared" : -76000000,
    "height" : 2.1,
    "length" : 12.5,
    "order" : "ornithischia",
    "vanished" : -75000000,
    "weight" : 5000
  },
  "linhenykus" : {
    "appeared" : -85000000,
    "height" : 0.6,
    "length" : 1,
    "order" : "theropoda",
    "vanished" : -75000000,
    "weight" : 3
  },
  "pterodactyl" : {
    "appeared" : -150000000,
    "height" : 0.6,
    "length" : 0.8,
    "order" : "pterosauria",
    "vanished" : -148500000,
    "weight" : 2
  },
  "stegosaurus" : {
    "appeared" : -155000000,
    "height" : 4,
    "length" : 9,
    "order" : "ornithischia",
    "vanished" : -150000000,
    "weight" : 2500
  },
  "triceratops" : {
    "appeared" : -68000000,
    "height" : 3,
    "length" : 8,
    "order" : "ornithischia",
    "vanished" : -66000000,
    "weight" : 11000
  }
}

高度未排序，正在返回 [44,...,0.6,...,3]

Answer 1

请求以JSON对象的形式返回结果，没有办法表达排序，所以不能使用orderBy参数对结果进行排序。

orderBy 参数应与equalTo 等过滤参数结合使用。

另见this answer。