在ruby中解析Json响应的问题

Question

  @response = Typhoeus::Request.get(FOUR_SQUARE_API_SERVER_ADDRESS+'search?ll=' + current_user.altitude.to_s + "&query="+ params[:query] + FOUR_SQUARE_API_ACESS_CODE)
   @venues = ActiveSupport::JSON.decode(@response.body)
   @venues['response']['groups'][0]['items'].each do |venue|
     venue['name']  //working
      venue['name']['location'][0]['address']  //issues
     venue['name']['categories'][0]['id']  //issues
   end 

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Answer 1

首先，venue['name']是标量，而不是数组;其次，venue['location']（我认为你试图访问）并没有被编码为数组，这只是一个对象：

location: {
    address: "...',
    city: "...",
    // ...
}

所以你想要：

venue['location']

然后，您的venue['name']['categories'][0]['id']将失败，因为venue['name']是标量;对于这个，你想要：

venue['categories'][0]['id']