Rails UTF-8响应 [英] Rails UTF-8 response

问题描述

我有一个在Ruby 1.9.3上运行的Rails 3.2应用程序，它返回存储在MongoDB数据库中的JSON数据。数据似乎正确存储在mongo中，例如（查看名称属性）：

  {_id：ObjectId（4f986cbe4c8086fdc9000002），created_at：ISODate 2012-04-25T21：31：45.474Z），updated_at：ISODate（2012-04-26T22：07：23.901Z），creator_id：ObjectId（4f6b4d3c4c80864381000001），updater_id ，name：Trädgår'n，sort：tradgarn，address：NyaAllén11，coordinates：[11.9764791,57.7045625]，phone：[phone]，url ：http://www.profilrestauranger.se/tradgarn/，user_ids：[]} 
  

但是当我发出返回此记录的请求时，我会收到这样的东西（现在看看name属性）：

任何感兴趣的回复标题：

  HTTP / 1.1 200 OK 
服务器：nginx / 1.2.0 
日期：星期四，2012年4月26日22:41:13 GMT 
内容类型：application / json; charset = utf-8 
内容长度：909 
连接：keep-alive 
状态：200 OK 
访问控制允许原点：* 
访问 - 控制允许 - 方法：POST，GET，OPTIONS 
访问控制 - 最大年龄：1000 
访问控制 - 允许标题：*，x请求 - 与
 X-UA - 兼容：IE = Edge 
 ETag：d2a95f06bec10d8087c3188280292d3c
缓存控制：max-age = 0，private，must-revalidate 
 X-Request-Id：fdd042568195df279e59affe45bdcd37 
 X - 运行时：0.037134 
  

我似乎无法弄清楚编码为什么或在哪里弄乱了？是什么赋予了？帮帮我？ ：）

解决方案

这个问题确实是JSON UTF-8编码之一。 #to_json 方法是转义unicode字符。这可以通过以下方式观察：

  user.to_json 
 
＃=> {\ created_at\ ：\ 2012-04-19T18：48：01Z\ \ email\：\ tr\\\\ädg\\\\år @示例.com\，\id\：10，\updated_at\：\2012-04-27T18：37：10Z\}
  

然而，当被解析时，这被转换回你的期望。然而，可以使用 JSON.generate 生成JSON，可以使用 #as_json 方法，以及施工的任何选择。这不排除unicode。要做到这一点：

  JSON.generate（user.as_json）
 
＃=> {\ created_at\ ：\ 2012-04-19T18：48：01Z\ \ email\：\ trädgå[e-mail]\，\ ID \：10，\updated_at\：\2012-04-27T18：37：10Z\}
  

I've got a Rails 3.2 app running on Ruby 1.9.3 that returns JSON data stored in a MongoDB database. The data seems to be stored correctly in mongo, e.g. (look at the name attribute):

{ "_id" : ObjectId("4f986cbe4c8086fdc9000002"), "created_at" : ISODate("2012-04-25T21:31:45.474Z"), "updated_at" : ISODate("2012-04-26T22:07:23.901Z"), "creator_id" : ObjectId("4f6b4d3c4c80864381000001"), "updater_id" : null, "name" : "Trädgår'n", "sort" : "tradgarn", "address" : "Nya Allén 11", "coordinates" : [ 11.9764791, 57.7045625 ], "phone" : "46031102080", "url" : "http://www.profilrestauranger.se/tradgarn/", "user_ids" : [ ] }

But when I issue a request that returns this record, I get something like this back (now look at the name attribute):

{"address":"Nya All\u00e9n 11","coordinates":[11.9764791,57.7045625],"created_at":"2012-04-25T23:31:45+02:00","id":"4f986cbe4c8086fdc9000002","name":"Tr\u00e4dg\u00e5r'n","phone":"46031102080","sort":"tradgarn","updated_at":"2012-04-27T00:07:23+02:00","url":"http://www.profilrestauranger.se/tradgarn/"}

The response headers for anyone interested:

HTTP/1.1 200 OK
Server: nginx/1.2.0
Date: Thu, 26 Apr 2012 22:41:13 GMT
Content-Type: application/json; charset=utf-8
Content-Length: 909
Connection: keep-alive
Status: 200 OK
Access-Control-Allow-Origin: *
Access-Control-Allow-Methods: POST, GET, OPTIONS
Access-Control-Max-Age: 1000
Access-Control-Allow-Headers: *,x-requested-with
X-UA-Compatible: IE=Edge
ETag: "d2a95f06bec10d8087c3188280292d3c"
Cache-Control: max-age=0, private, must-revalidate
X-Request-Id: fdd042568195df279e59affe45bdcd37
X-Runtime: 0.037134

I cannot seem to figure out why or where the encoding is getting messed up? What gives? Help? :)

解决方案

The issue is indeed one of JSON UTF-8 encoding. The #to_json method is escaping unicode characters. This can be observed by something like:

user.to_json

#  => "{\"created_at\":\"2012-04-19T18:48:01Z\",\"email\":\"tr\\u00e4dg\\[e-mail]\",\"id\":10,\"updated_at\":\"2012-04-27T18:37:10Z\"}"

When parsed, however, this is converted back to how you would expect it. It is possible, however, to generate the JSON using JSON.generate, with which the #as_json method can be used, along with any options for the construction. This doesn't escape the unicode. To do such:

JSON.generate(user.as_json)

#  => "{\"created_at\":\"2012-04-19T18:48:01Z\",\"email\":\"trädgå[e-mail]\",\"id\":10,\"updated_at\":\"2012-04-27T18:37:10Z\"}"

这篇关于Rails UTF-8响应的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！