rails解析xml以显示json格式

Question

我正在尝试将一些 XML 转换为 JSON

这是我目前所拥有的

def skiddle_api
  skiddlexml = 'http://xml.skiddlecdn.co.uk/affiliates/all.xml'
  doc = Nokogiri::XML(open(skiddlexml))
  doc.css('event#12987613').css('ticket').each do |node|
    children = node.children
      byebug
    @ticket_json = {
      'name' => children.css('name').inner_text
      'facevalue' => children.css('faceValue').inner_text
    }
  end
  respond_to do |format|
     format.json  { render :json => {:ticket => @ticket_json } }
  end
end

我目前在这里举办的活动有 5-8 种不同的门票类型

我希望每种票证类型都显示为 JSON 格式，如下所示：

{
    "ticket": {
        "name": "Return Coach Ticket - Glasgow - Coach A"
        "faceValue": "20.00"
    }
    "ticket": {
        "name": "Return Coach Ticket - Manchester - Coach B"
        "faceValue": "25.00"
    }
}

我在这里做错了什么？

谢谢你:)

Answer 1

问题是你每次都在这里替换@ticket_json：

@ticket_json = {
  'name' => children.css('name').inner_text,
  'facevalue' => children.css('faceValue').inner_text
}

所以你每次都需要分配一个新值，但@ticket_json 不能是哈希，它必须是哈希数组才能工作（哈希中不能有重复的键，并且您的示例具有重复的键）。

然后解决方案是创建一个数组而不是散列在每个循环之外，并在每次迭代中添加一个票证，如下所示：

def skiddle_api
  skiddlexml = 'http://xml.skiddlecdn.co.uk/affiliates/all.xml'
  doc = Nokogiri::XML(open(skiddlexml))

  @ticket_json = []

  doc.css('event#12987613').css('ticket').each do |node|
    children = node.children
    @ticket_json << {
      'name' => children.css('name').inner_text,
      'facevalue' => children.css('faceValue').inner_text
    }
  end

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

输出将是这样的：

[
  {
    "name":"Earlybird Ticket",
    "facevalue":"30.00"
  },
  {
    "name":"VIP Ticket",
    "facevalue":"50.00"
  },
  {
    "name":"Standard E-Ticket",
    "facevalue":"0.00"
  }
]

如果你想保留一个ticket 键，你可以这样做，只需将它们的值设为一个哈希数组，例如：

def skiddle_api
  skiddlexml = 'http://xml.skiddlecdn.co.uk/affiliates/all.xml'
  doc = Nokogiri::XML(open(skiddlexml))

  @ticket_json = { tickets: [] }

  doc.css('event#12987613').css('ticket').each do |node|
    children = node.children
    @ticket_json[:tickets] << {
      'name' => children.css('name').inner_text,
      'facevalue' => children.css('faceValue').inner_text
    }
  end

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

输出将类似于：

{
  "tickets": [
    {
      "name":"Earlybird Ticket",
      "facevalue":"30.00"
    },
    {
      "name":"VIP Ticket",
      "facevalue":"50.00"
    },
    {
      "name":"Standard E-Ticket",
      "facevalue":"0.00"
    }
  ]
}