在名称中转义“@”

Question

我使用 Rails 4.2.0 和 ActiveResource 来实现服务器 API 的网络客户端。我遇到的问题是服务器资源在属性名称中包含“@”和“@@”。因此在创建 ARes 对象时，ActiveResource 无法正确处理这些属性。示例：服务器 returns JSON 数据：

{"@@artist"=>
  {"@id"=>"some_text_id",
   "@name"=>"Carman",
   "@publisher"=>"Carmen radio",
   "@category"=>"Music",
   "@automaticallyGenerated"=>true,
   "@@options"=>{"@public"=>true, "@enabled"=>false},
   "_extended"=>{"@container"=>"Music box", "region"=>"Europe"}}}

在创建 ARes 对象之前重命名属性的变体：（从名称中删除“@”或将其替换为另一个符号）。在那种情况下，我需要在发送 POST、PUT 请求之前返回重命名属性（例如调用 resource.save），例如在名称的开头添加“@”或“@@”。

你能推荐更灵活、更漂亮的变体吗？

Answer 1

我真的不知道你的输出是什么，但你可以使用类似这样的东西。这只是示例。

input = {
  "@@artist"=>
  {"@id"=>"some_text_id",
  "@name"=>"Carman",
  "@publisher"=>"Carmen radio",
  "@category"=>"Music",
  "@automaticallyGenerated"=>true,
  "@@options"=>{"@public"=>true, "@enabled"=>false},
  "_extended"=>{"@container"=>"Music box", "region"=>"Europe"}
  }
}

def transcode(hash)
  result = {}
  hash.each do |k, v|
    result[k.gsub(/@*/, "")] = ( Hash === v ? transcode(v) : v )
  end
  result
end

output = transcode(input)

#{
#  "artist" => {
#  "id" => "some_text_id",
#  "name" => "Carman",
#  "publisher" => "Carmen radio",
#  "category" => "Music",
#  "automaticallyGenerated" => true,
#  "options" => {
#  "public" => true,
#  "enabled" => false
#  },
#  "_extended" => {
#  "container" => "Music box",
#  "region" => "Europe"
#  }
#  }
#}

返回

input = {
  "@@artist"=>
  {"@id"=>"some_text_id",
  "@name"=>"Carman",
  "@publisher"=>"Carmen radio",
  "@category"=>"Music",
  "@automaticallyGenerated"=>true,
  "@@options"=>{"@public"=>true, "@enabled"=>false},
  "_extended"=>{"@container"=>"Music box", "region"=>"Europe"}
  }
}

def transcode(hash)
  result = {}
  hash.each do |k, v|
    result[k.gsub(/@*/, "")] = ( Hash === v ? transcode(v) : v )
  end
  result
end

def transcode_back(hash, output)
  result = {}
  hash.each do |k, v|
    value = output[k.gsub(/@*/, "")]
    result[k] = ( Hash === value ? transcode_back(v, value) : value )
  end
  result
end

output = transcode(input)

# you can modify values
#output["artist"]["name"] = "CarmanNew"

result = transcode_back(input, output)

output == result # is same ?
# true

在名称中转义“@”

Escape '@' in names

ruby

escaping

ruby-on-rails

activeresource