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在ruby中过滤头值不同的json

ruby json

-3

Junaid Farooq · 技术社区 · 8 年前

我有这种杂烩

{"1515599671"=>
  {"Path"=>"images/1515599671.jpeg",
   "Tags"=>
    {"Anger"=>0,
     "Disgust"=>0,
     "FaceDetected"=>1,
     "Fear"=>0,
     "Happiness"=>0,
     "LargeFaceDetected"=>0,
     "MotionDetected"=>0,
     "Neutral"=>0,
     "Sadness"=>0,
     "Surprise"=>0}},
 "1525357331"=>
  {"Tags"=>
    {"Anger"=>0,
     "Disgust"=>0,
     "FaceDetected"=>0,
     "Fear"=>0,
     "Happiness"=>0,
     "LargeFaceDetected"=>0,
     "MotionDetected"=>0,
     "Neutral"=>0,
     "Sadness"=>0,
     "Surprise"=>0}},
 "1525357336"=>
  {"Tags"=>
    {"Anger"=>0,
     "Disgust"=>0,
     "FaceDetected"=>0,
     "Fear"=>0,
     "Happiness"=>0,
     "LargeFaceDetected"=>0,
     "MotionDetected"=>0,
     "Neutral"=>0,
     "Sadness"=>0,
     "Surprise"=>0}},
 "1525357341"=>
  {"Tags"=>
    {"Anger"=>0,
     "Disgust"=>0,
     "FaceDetected"=>0,
     "Fear"=>0,
     "Happiness"=>0,
     "LargeFaceDetected"=>0,
     "MotionDetected"=>0,
     "Neutral"=>0,
     "Sadness"=>0,
     "Surprise"=>0}},
 "1525357346"=>
  {"Tags"=>
    {"Anger"=>0,
     "Disgust"=>0,
     "FaceDetected"=>0,
     "Fear"=>0,
     "Happiness"=>0,
     "LargeFaceDetected"=>0,
     "MotionDetected"=>0,
     "Neutral"=>0,
     "Sadness"=>0,
     "Surprise"=>0}},
 "1525357448"=>
  {"Path"=>"images/1525357448.jpeg",
   "Tags"=>
    {"Anger"=>0,
     "Disgust"=>0,
     "FaceDetected"=>1,
     "Fear"=>0,
     "Happiness"=>0,
     "LargeFaceDetected"=>0,
     "MotionDetected"=>0,
     "Neutral"=>0,
     "Sadness"=>0,
     "Surprise"=>0}},
 "1525357449"=>
  {"Path"=>"images/1525357449.jpeg",
   "Tags"=>
    {"Anger"=>0,
     "Disgust"=>0,
     "FaceDetected"=>1,
     "Fear"=>0,
     "Happiness"=>0,
     "LargeFaceDetected"=>0,
     "MotionDetected"=>0,
     "Neutral"=>0,
     "Sadness"=>0,
     "Surprise"=>0}}}

很多价值观都没有 Path 他们中很少有人有路径,我想过滤这个散列,得到一个散列,其中只有那些值,其中有路径,我已经试过了。每个和映射,但它不工作吗?任何帮助都将不胜感激谢谢

2 回复 | 直到 8 年前

Jagdeep Singh 8 年前

你可以使用 select 关于此的哈希:

hash = {"1515599671"=>{"Path"=>"images/1515599671.jpeg", "Tags"=>{"Anger"=>0, "Disgust"=>0, "FaceDetected"=>1, "Fear"=>0, "Happiness"=>0, "LargeFaceDetected"=>0, "MotionDetected"=>0, "Neutral"=>0, "Sadness"=>0, "Surprise"=>0}}, "1525357331"=>{"Tags"=>{"Anger"=>0, "Disgust"=>0, "FaceDetected"=>0, "Fear"=>0, "Happiness"=>0, "LargeFaceDetected"=>0, "MotionDetected"=>0, "Neutral"=>0, "Sadness"=>0, "Surprise"=>0}}, "1525357336"=>{"Tags"=>{"Anger"=>0, "Disgust"=>0, "FaceDetected"=>0, "Fear"=>0, "Happiness"=>0, "LargeFaceDetected"=>0, "MotionDetected"=>0, "Neutral"=>0, "Sadness"=>0, "Surprise"=>0}}, "1525357341"=>{"Tags"=>{"Anger"=>0, "Disgust"=>0, "FaceDetected"=>0, "Fear"=>0, "Happiness"=>0, "LargeFaceDetected"=>0, "MotionDetected"=>0, "Neutral"=>0, "Sadness"=>0, "Surprise"=>0}}, "1525357346"=>{"Tags"=>{"Anger"=>0, "Disgust"=>0, "FaceDetected"=>0, "Fear"=>0, "Happiness"=>0, "LargeFaceDetected"=>0, "MotionDetected"=>0, "Neutral"=>0, "Sadness"=>0, "Surprise"=>0}}, "1525357448"=>{"Path"=>"images/1525357448.jpeg", "Tags"=>{"Anger"=>0, "Disgust"=>0, "FaceDetected"=>1, "Fear"=>0, "Happiness"=>0, "LargeFaceDetected"=>0, "MotionDetected"=>0, "Neutral"=>0, "Sadness"=>0, "Surprise"=>0}}, "1525357449"=>{"Path"=>"images/1525357449.jpeg", "Tags"=>{"Anger"=>0, "Disgust"=>0, "FaceDetected"=>1, "Fear"=>0, "Happiness"=>0, "LargeFaceDetected"=>0, "MotionDetected"=>0, "Neutral"=>0, "Sadness"=>0, "Surprise"=>0}}}

hash.select { |key, value| value['Path'] }    # Returns key-value pairs only with 'Path' set in its value. Modify the condition to remove empty strings, if you need to
 => {"1515599671"=>{"Path"=>"images/1515599671.jpeg", "Tags"=>{"Anger"=>0, "Disgust"=>0, "FaceDetected"=>1, "Fear"=>0, "Happiness"=>0, "LargeFaceDetected"=>0, "MotionDetected"=>0, "Neutral"=>0, "Sadness"=>0, "Surprise"=>0}}, "1525357448"=>{"Path"=>"images/1525357448.jpeg", "Tags"=>{"Anger"=>0, "Disgust"=>0, "FaceDetected"=>1, "Fear"=>0, "Happiness"=>0, "LargeFaceDetected"=>0, "MotionDetected"=>0, "Neutral"=>0, "Sadness"=>0, "Surprise"=>0}}, "1525357449"=>{"Path"=>"images/1525357449.jpeg", "Tags"=>{"Anger"=>0, "Disgust"=>0, "FaceDetected"=>1, "Fear"=>0, "Happiness"=>0, "LargeFaceDetected"=>0, "MotionDetected"=>0, "Neutral"=>0, "Sadness"=>0, "Surprise"=>0}}}


# Question update
hash.select { |key, value| value['Path'] && value['Tags'] && (value['Tags']['Anger'] == 1) }    # Select those with 'Path' set and 'Tags.Anger' with value 1
 => {}     # You don't have any such objects in your example

Aleksei Matiushkin 8 年前

你可以使用 iteraptor 用于此目的的宝石:

require 'iteraptor'
hash = { ... }

keys = hash.iteraptor.select(/\APath\z/).keys
#â ["1515599671", "1525357448", "1525357449"]

hash.select { |k, _| keys.include? k }