Hxl stats view 145 147

app/controllers/hxlstats_controller.rb

@@ -0,0 +1,10 @@
+class HxlstatsController < ApplicationController
+  def show
+    @results = HxlStatsView.results_by_emotional_state
+
+    respond_to do |format|
+      format.html
+      format.json { send_data @results, filename: "hxlstats-#{Date.today}.json" }
+    end
+  end
+end

app/models/hxl_stats_view.rb

@@ -0,0 +1,109 @@
+class HxlStatsView < ActiveRecord::Base
+  # View aggregates data in a multi-nested-group by for the HXL proxy/endpoint
+  #
+  self.table_name = 'hxl_stats_view'
+  def readonly?
+    true
+  end
+
+  HXLSTATS_COLUMN_HEADERS =
+    ["Emotional State",
+     "Stage of journey",
+     "Country drawn in",
+     "Total children affected",
+     "Children who identify as female",
+     "Children who identify as male",
+     "Children who identify as neither female nor male",
+     "Children between the ages of 5-12",
+     "Children between the ages of 13-18",
+     "Children under 5 years old",
+     "Older than 18 years old"].freeze
+
+  HXL_STATS_TAGS =
+    ["#impact+indicator+code",
+     "#affected+children",
+     "#country+code",
+     "#affected+children+total",
+     "#affected+children+female",
+     "#affected+children+male",
+     "#affected+children+other_gender",
+     "#affected+children+age_5_12",
+     "#affected+children+age_13_18",
+     "#affected+children+age_under5",
+     "#affected+children+age_18plus"].freeze
+
+  private_class_method :get_counts_by_gender
+  private_class_method :get_counts_by_age
+
+  def self.get_counts_by_gender(hxlstatsmajorgroup)
+    # Group by gender and aggregate
+    gender_totals = Hash.new(0)
+    hxlstatsgroupsgender = hxlstatsmajorgroup.group_by(&:gender) # shorthand for { |hxlstat| hxlstat.gender }
+    hxlstatsgroupsgender.each do |k_gender, v_gender|
+      # puts "    cycle genders"
+      # puts "    %s " % k_gender
+      # puts "    %s " % v_gender
+      gender_totals[k_gender] = v_gender.count
+    end
+    gender_totals # hash of key gender to v counts
+  end
+
+  # rubocop:disable MethodLength
+  def self.get_counts_by_age(hxlstatsmajorgroup)
+    # Processing Age aggregations
+    hxlstatsgroupsage = hxlstatsmajorgroup.group_by(&:age) # shorthand for { |hxlstat| hxlstat.age }
+    # gender *and* age inclusiveness
+    younger_than_five = 0
+    five_twelve_total = 0
+    thirteen_eighteen_total = 0
+    older_total = 0
+
+    hxlstatsgroupsage.each do |k_age, _v_age|
+      # k_age is age, _v_age is array of hxlstatsmatview
+      # puts "    cycle ages"
+      # puts "    %s" % k_age
+      # puts "    %s" % _v_age.count
+      if k_age < 5
+        younger_than_five += 1
+      elsif k_age >= 5 && k_age < 13
+        five_twelve_total += 1
+      elsif k_age >= 13 && k_age <= 18
+        thirteen_eighteen_total += 1
+      else
+        older_total += 1
+      end
+    end
+    [younger_than_five, five_twelve_total, thirteen_eighteen_total, older_total]
+  end
+
+  # rubocop:disable MethodLength
+  def self.hxl_stats_counts
+    results = []
+    hxlstats = HxlStatsView.all
+
+    # First group by major categories, before aggregating independently for gender and age and recombining
+    hxlstatsgroups = hxlstats.group_by { |hxlstat| [hxlstat.mood_rating, hxlstat.stage_of_journey, hxlstat.country] }
+    hxlstatsgroups.each do |keys, hxlstatsmajorgroup| # keys = mood_rating, stage_of_j, country
+      gender_totals = get_counts_by_gender(hxlstatsmajorgroup)
+      younger_than_five, five_twelve_total, thirteen_eighteen_total, older_total = get_counts_by_age(hxlstatsmajorgroup)
+      results.append([*keys,
+                      hxlstatsmajorgroup.count,
+                      gender_totals[Drawing.genders["female"]], # 1 or 1
+                      gender_totals[Drawing.genders["male"]], # 0 or 2
+                      gender_totals[Drawing.genders["other"]] + gender_totals[Drawing.genders["not_specified"]], # 2 or 0 + 3
+                      five_twelve_total,
+                      thirteen_eighteen_total,
+                      younger_than_five,
+                      older_total])
+    end
+    results
+  end
+
+  def self.results_by_emotional_state
+    results = []
+    results = results.append(HXLSTATS_COLUMN_HEADERS)
+    results = results.append(HXL_STATS_TAGS)
+    results = results.concat(hxl_stats_counts)
+    results
+  end
+end

app/views/hxlstats/show.html.erb

@@ -0,0 +1,9 @@
+<pre>
+[
+<% @results.each do | line | %>
+        <%= line %>
+<% end %>
+]
+</pre>
+
+

config/routes.rb

@@ -19,5 +19,7 @@
 
   resources :drawings, :organisations
 
+  get 'hxlstats', to: 'hxlstats#show'
+
   root 'drawings#index'
 end

db/migrate/20170601162837_create_hxl_stats_view.rb

@@ -0,0 +1,24 @@
+class CreateHxlStatsView < ActiveRecord::Migration
+  def up 
+    execute <<-SQL
+      CREATE VIEW hxl_stats_view AS
+      SELECT d.id AS drawing_id, 
+             d.*,
+             u.country as user_country,
+             o.id AS org_id,  
+             o.name AS org_name
+      FROM drawings d,
+                    users u, 
+                    organisations o
+      WHERE d.user_id = u.id AND
+            u.organisation_id = o.id
+    SQL
+  end
+
+  def down
+    execute <<-SQL
+     DROP VIEW IF EXISTS hxl_stats_view
+    SQL
+  end
+end
+

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20170303152046) do
+ActiveRecord::Schema.define(version: 20170601162837) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"

spec/controllers/hxlstats_controller_spec.rb

@@ -0,0 +1,10 @@
+require 'rails_helper'
+
+RSpec.describe HxlstatsController, type: :controller do
+  describe "GET #show" do
+    it "returns http success" do
+      get :show
+      expect(response).to have_http_status(:success)
+    end
+  end
+end