ruby-on-rails - Rails 使用 UTF-8 渲染 JSON 响应

Question

我正在尝试使用 Rails 构建一个 API 并且到目前为止做得很好，但是现在我添加了一个带有变音符号的记录我遇到了一个问题，我无法再呈现 JSON 而且我不能弄清楚如何解决我的问题。以下是日志内容:

 Completed 500 Internal Server Error in 40ms

JSON::GeneratorError (source sequence is illegal/malformed utf-8):
  app/controllers/api/v1/raids_controller.rb:8:in `index'


  Rendered /usr/local/lib/ruby/gems/2.1.0/gems/actionpack-   
4.1.8/lib/action_dispatch/middleware/templates/rescues/_source.erb (1.4ms)
  Rendered /usr/local/lib/ruby/gems/2.1.0/gems/actionpack-    
4.1.8/lib/action_dispatch/middleware/templates/rescues/_trace.html.erb (2.3ms)
 Rendered /usr/local/lib/ruby/gems/2.1.0/gems/actionpack-
4.1.8/lib/action_dispatch/middleware/templates/rescues/_request_and_response.html.erb (1.9ms)
 Rendered /usr/local/lib/ruby/gems/2.1.0/gems/actionpack-
4.1.8/lib/action_dispatch/middleware/templates/rescues/diagnostics.erb within rescues/layout     
(30.2ms)

这是我的 Controller 中产生此输出的方法:

def index
  #This is the default call and should list all tournaments.
  @tournaments = Tournament.all
  @tournaments = @tournaments.order("startdate DESC")

  respond_to do |format|
    format.json { render :json => @tournaments }
  end
end

如果有人能帮我解决我的问题就太好了。我已经检查过，并且确定到处都使用 UTF-8 编码。此外，如果我通过 Rails 控制台检查，我会看到字符 Ü 被编码为 name: "\xDC"

Answer 1

def create
            name = params[:name]
            description = params[:description]
            orga = params[:raidlead]
            startdate = params[:startdate]
            enddate = params[:enddate]

            puts description

            name.force_encoding("ISO-8859-1").encode("UTF-8")
            description.force_encoding("ISO-8859-1").encode("UTF-8")
            orga.force_encoding("ISO-8859-1").encode("UTF-8")

成功了，所以在将字段保存到数据库之前格式化字段对我来说成功了。解决问题的方法是:

string.force_encoding("ISO-8859-1").encode("UTF-8")

感谢 Prakash Murthy 的提示。