导轨UTF-8响应(Rails UTF-8 response)

我有一个Rails 3.2的应用程序上的Ruby 1.9.3运行返回存储在MongoDB数据库JSON数据。这些数据似乎是正确蒙戈，例如，存储（看名字属性）：

{ "_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" : 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" : [ ] }

但是，当我发出返回该记录的请求，我得到这样的事情回来（现在看的name属性）：

{"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/"}

对于任何有兴趣的响应头：

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

我似乎无法找出原因或其中编码是越来越乱了？是什么赋予了？救命？ :)

Answer 1:

这个问题确实是JSON UTF-8编码的一个。该#to_json方法逸出Unicode字符。这可以通过类似观察：

user.to_json

#  => "{\"created_at\":\"2012-04-19T18:48:01Z\",\"email\":\"tr\\u00e4dg\\u00e5r@example.com\",\"id\":10,\"updated_at\":\"2012-04-27T18:37:10Z\"}"

当解析，但是，这种转换回你会怎么指望它。这是可能的，但是，以产生使用JSON JSON.generate ，利用该#as_json方法可以被使用，以用于建筑的任何选项。这不逃避的Unicode。要做到这样的：

JSON.generate(user.as_json)

#  => "{\"created_at\":\"2012-04-19T18:48:01Z\",\"email\":\"trädgår@example.com\",\"id\":10,\"updated_at\":\"2012-04-27T18:37:10Z\"}"