Class: Json_Normalizer

Inherits:
Object
  • Object
show all
Defined in:
lib/json_normalizer.rb

Instance Method Summary collapse

Constructor Details

#initialize(map) ⇒ Json_Normalizer

Init requires pre defined JSON map. Ex. { “this_key”: [“morphed”, “to”, “this_key”] }



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# File 'lib/json_normalizer.rb', line 8

def initialize(map)
  @map = JSON.parse(map)
  @result = {}
end

Instance Method Details

#fetch_key(key) ⇒ Object 



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# File 'lib/json_normalizer.rb', line 18

def fetch_key(key)
  @map.keys.each{ |k| return k if @map[k].include?(key) }
end

#key_contained?(key) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/json_normalizer.rb', line 13

def key_contained?(key)
  @map.keys.each{ |k| return true if @map[k].include?(key.to_s) }
  return false
end

#swap_key(json, key) ⇒ Object

def swap_key(json, key)

if self.key_contained?(key)
  json[self.fetch_key(key).first] = json[key]
  json.delete(key)
else
  # if we want to move out non-normalized keys into a different 'misc' key or something
end

end



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# File 'lib/json_normalizer.rb', line 31

def swap_key(json, key)
  if self.key_contained?(key)
    json[self.fetch_key(key)] = json[key]
    json.delete(key)
  end
end

#translate(json) ⇒ Object 



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# File 'lib/json_normalizer.rb', line 38

def translate(json)
  # json = JSON.parse(json) if !json.is_a?(Hash)
  json = JSON.parse(json) if ![Hash, Array].include?(json.class)
  if json.is_a?(Array)
    json.each do |j|
      j.keys.each do |key|
        if j[key].respond_to?(:each)
          puts "Key: #{key} recursing..."
          self.translate(j[key])
          self.swap_key(j, key)
        else
          self.swap_key(j, key)
        end
      end
    end
  else
    json.keys.each do |key|
      if json[key].respond_to?(:each)
        puts "Key: #{key} recursing..."
        self.translate(json[key])
        self.swap_key(json, key)
      else
        self.swap_key(json, key)
      end
    end
  end

  # json.map{ |k, v| [k.to_s, v] }.to_h
  # JSON.parse json.to_json
  json
end