将 Ruby 数组解析为 JSON
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Parsing a Ruby Array to JSON
提问by pablo808
I have some results:
我有一些结果：
puts result
That look like this output:
看起来像这样的输出：
Allowed
20863963
1554906
Denied
3607325
0
Quarantined
156240
0
Debug
调试
p results
output
输出
[["Allowed", 20863963, 1554906], ["Denied", 3607325, 0], ["Quarantined", 156194, 0]]
The headers are:
标题是：
status,hits,page_views
I need to convert this to json. If the results was in standard csv format then it would be straight forward but how would one approach it if the results format looked like above?
我需要将其转换为 json。如果结果是标准的 csv 格式，那么它会很简单，但是如果结果格式看起来像上面那样，如何处理呢？
Expected output something similar to this:
预期输出类似于以下内容：
[{"status":"Allowed","hits":"20863963","page_views":"1554906"},{"status":"Denied","hits":"3607325","page_views":"0"},{"status":"Quarantined","hits":"156240","page_views":"0"}]
Solution
解决方案
a = result.map{|s| {status: s[0], hits: s[1].to_i, page_views: s[2].to_i} }
puts a.to_json
采纳答案by Abe Voelker
output = "Allowed
20863963
1554906
Denied
3607325
0
Quarantined
156240
0"
a = output.split("\n").each_slice(3).map{|s| {status: s[0], hits: s[1].to_i, page_views: s[2].to_i} } # => [{:status=>"Allowed", :hits=>20863963, :page_views=>1554906}, {:status=>"Denied", :hits=>3607325, :page_views=>0}, {:status=>"Quarantined", :hits=>156240, :page_views=>0}]
a.to_json # => => "[{\"status\":\"Allowed\",\"hits\":20863963,\"page_views\":1554906},{\"status\":\"Denied\",\"hits\":3607325,\"page_views\":0},{\"status\":\"Quarantined\",\"hits\":156240,\"page_views\":0}]"
回答by bmalets
Look at to_jsonmethod.
看to_json方法。
require 'json'
# => true
h = {a: 1, b: 2,c: 3}
# => {a: 1, b: 2,c: 3}
h.to_json
# => "{\"a\":1,\"b\":2,\"c\":3}"
回答by T145
You assign your "headers" into the attr_accessor and then tell JSON to parse that symbol. Here's an example:
您将“标题”分配到 attr_accessor 中，然后告诉 JSON 解析该符号。下面是一个例子：
class Document
attr_accessor :content
def content
metadata[:content] || metadata['content']
end
def self.parse_contents
txt = File.read(path, {mode: 'r:bom|utf-8'})
page = Document.new
page.metadata = JSON.parse(txt)
page.content = page.metadata['content']
return page
end
end
Hope it helps!
希望能帮助到你！
