111 lines
2.7 KiB
Ruby
111 lines
2.7 KiB
Ruby
module Statisticable
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extend ActiveSupport::Concern
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included do
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attr_reader :resource
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def initialize(resource)
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@resource = resource
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end
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def generate
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self.class.stats_methods.map { |stat_name| [stat_name, send(stat_name)] }.to_h
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end
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private
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def total_participants_with_gender
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participants.where.not(gender: nil).distinct.count
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end
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def total_male_participants
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participants.where(gender: "male").count
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end
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def total_female_participants
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participants.where(gender: "female").count
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end
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def total_unknown_gender_or_age
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participants.where("gender IS NULL OR date_of_birth is NULL").uniq.count
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end
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def male_percentage
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calculate_percentage(total_male_participants, total_participants_with_gender)
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end
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def female_percentage
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calculate_percentage(total_female_participants, total_participants_with_gender)
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end
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def age_groups
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[[16, 19],
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[20, 24],
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[25, 29],
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[30, 34],
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[35, 39],
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[40, 44],
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[45, 49],
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[50, 54],
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[55, 59],
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[60, 64],
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[65, 69],
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[70, 74],
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[75, 79],
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[80, 84],
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[85, 89],
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[90, 300]
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]
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end
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def participants_by_age
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age_groups.map do |start, finish|
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users = participants.where("date_of_birth > ? AND date_of_birth < ?",
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finish.years.ago.beginning_of_year,
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start.years.ago.end_of_year)
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[
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"#{start} - #{finish}",
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{
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range: range_description(start, finish),
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count: users.count,
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percentage: calculate_percentage(users.count, total_participants)
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}
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]
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end.to_h
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end
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def calculate_percentage(fraction, total)
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return 0.0 if total.zero?
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(fraction * 100.0 / total).round(3)
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end
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def range_description(start, finish)
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if finish > 200
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I18n.t("stats.age_more_than", start: start)
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else
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I18n.t("stats.age_range", start: start, finish: finish)
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end
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end
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end
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class_methods do
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def stats_methods
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%i[total_participants total_male_participants
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total_female_participants total_unknown_gender_or_age
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male_percentage female_percentage participants_by_age]
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end
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def stats_cache(*method_names)
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method_names.each do |method_name|
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alias_method :"raw_#{method_name}", method_name
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define_method method_name do
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stats_cache(method_name) { send(:"raw_#{method_name}") }
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end
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end
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end
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end
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end
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