如何使用Httparty和Ruby使用复杂对象的Rest API

我试图在Ruby中调用这个API方法https://zferral.com/api-docs/affiliate#aff-create-usage-example,它需要这个对象:
{  "affiliate" : {
    "email"           : "john@example.com",
    "send_user_email" : "1" }}
使用Httparty类,我称之为:
result = self.class.post("/api/#{@apikey}/affiliate/create.xml", :body => {:affiliate => {:email => email}})
不幸的是,API一直向我发送“需要电子邮件”。我试图切换到json,我改变了:body with:query等... 任何人都可以告诉我如何正确调用affiliate / create方法? 谢谢。     
已邀请:
您正在发送json,但是将其发布到create.xml ---在rails中,当您发布到create.xml时,这将自动将内容类型设置为xml 尝试发布到
/api/#{@apikey}/affiliate/create.json
如果这不起作用 - 您是否遵循HTTParty真正喜欢的课程设计? http://railstips.org/blog/archives/2008/07/29/it-s-an-httparty-and-everyone-is-invited/     
这就是我解决问题的方法:
    url = URI.parse('https://xxxx.zferral.com/api/xxx/affiliate/create.xml')
    http = Net::HTTP.new(url.host, url.port)
    http.use_ssl = true
    http.verify_mode = OpenSSL::SSL::VERIFY_NONE
    request = Net::HTTP::Post.new(url.path)
    request.body = "<?xml version='1.0' encoding='UTF-8'?><affiliate><email>#{email}</email><send_user_email>0</send_user_email></affiliate>"
    request.content_type = 'text/xml'
    response = http.request(request)
    

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