Rails 3：从数据数组创建有效的 JSON 对象

发布于 2024-11-07 08:31:19 字数 1327 浏览 1 评论 0原文

我正在从 MongoDB 数据库 (@bs) 获取信息。 @bs 有大量我不感兴趣的信息，所以我需要的是循环遍历所有信息并使用我需要的信息创建一个新对象。

为此，我创建了一个新数组 (@final)，并获取信息并将其添加到 @final 中。信息似乎已经到达那里，但是，当我将其转换为 JSON 时，它不是有效的 JSON 对象。我打算在 @final.json 中创建的是这样的：

{ Something: [ {Email: "[email protected]", At: "date", ....}, {...}, ....] }

但是当我执行 to_json 时，我得到 [["At: date","Email: [电子邮件受保护]","消息 ID: .....

   @bs = coll.find("headers.from" => email, "date" => {"$gte" => initial_date, "$lte" => Time.now.utc})

@bs = @bs.to_a.map { |obj| obj.delete("completo"); obj.delete("_id"); obj.delete("date"); obj.delete("headers" => "content_type"); obj }

@final = Array.new

@bs.each do |a|
  elem = Array.new
  elem << "At: #{a["date"]}"
  elem << "Email: #{a["headers"]["to"]}"
  elem << "Message: #{a["headers"]["message_id"]}"
  elem << "Type: #{a["headers"]["status"]}"
  @final << elem
end

puts @final  
@final = @final.to_json
puts @final["Email"]

请帮忙，

谢谢。

原文

I am taking information from my MongoDB database (@bs). @bs has tons of information that I'm not interested, so what I need is to cycle trough all the information and create a new object with the information I need.

For that, I created a new array (@final) and I'm getting information and adding it to @final. The information seems to be getting there, however, when I convert it to JSON it's not a valid JSON object. What I intend to create in @final.json is this:

{ Something: [ {Email: "[email protected]", At: "date", ....}, {...}, ....] }

But when I do to_json I get [["At: date","Email: [email protected]","Message-id: .....

   @bs = coll.find("headers.from" => email, "date" => {"$gte" => initial_date, "$lte" => Time.now.utc})

@bs = @bs.to_a.map { |obj| obj.delete("completo"); obj.delete("_id"); obj.delete("date"); obj.delete("headers" => "content_type"); obj }

@final = Array.new

@bs.each do |a|
  elem = Array.new
  elem << "At: #{a["date"]}"
  elem << "Email: #{a["headers"]["to"]}"
  elem << "Message: #{a["headers"]["message_id"]}"
  elem << "Type: #{a["headers"]["status"]}"
  @final << elem
end

puts @final  
@final = @final.to_json
puts @final["Email"]

Please help.

Thanks

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智商已欠费 2024-11-14 08:31:20

在循环中，创建哈希而不是数组。 to_json 应该使其成为 JSON 对象。

@bs.each do |a|
  @final << { :At => a['date'], :Email => a['headers']['to'], :Message => a['headers']['message_id'], :Type => a['headers']['status'] }
end

In your loop, create a hash rather than an array. to_json should make this a JSON Object.

@bs.each do |a|
  @final << { :At => a['date'], :Email => a['headers']['to'], :Message => a['headers']['message_id'], :Type => a['headers']['status'] }
end

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