methods.rb

# generate_csv gets parsed JSON to generate the admin required CSV file

require "csv"
require "json"

def generate_csv(hash)  
  # setting column titles for CSV file
  cell_title = ["email", "name", "genre", "set_milestone", "date", "height", "weight"]

  # open CSV file
  CSV.generate do |csv|
    # write completed column names
    csv << cell_title
  # using main defined classes
    hash.each do |userdata|
      next if userdata.name == "admin"
      temp_user = [userdata.email,userdata.name, userdata.gender, userdata.set_milestone]
      # Check if userdata.measures is empty, if it is, set dummy data to show user
      if userdata.measures.empty?
        csv << temp_user + [0,0,0]
      else
        userdata.measures.each do |measure|
          temp_measure = [measure.date, measure.height, measure.weight]
    # writing rows of data in CSV
          csv << temp_user + temp_measure
        end
      end
    end
  end
end