Question

我使用Rails 4.2.0和ActiveResource来实现服务器API的webclient。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：服务器返回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）。在这种情况下，我需要在发送POST，PUT请求之前重新命名重命名属性（例如，调用resource.save）例如。在名称的开头添加“@”或“@@”。

你能否提出更灵活，更漂亮的变体？

Answer 1

我不知道你的输出是什么，但你可以使用这样的东西。这只是一个例子。

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"
#  }
#  }
#}

BACK

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

逃避'@'的名字

1 个答案: