Enhancements and bugfixing

FIxed issue in last commit: supports controller were not correctly
filling the holes without data.

Fixed duplication in supports and successful supports controller using a
concer.

Successfull supports controller will fill the holes without data in the
same way that supports controller does.

app/controllers/concerns/dashboard/group_supports.rb

@@ -0,0 +1,56 @@
+module Dashboard::GroupSupports
+  extend ActiveSupport::Concern
+
+  included do
+    def grouped_supports(attribute)
+      supports.group_by { |v| grouping_key_for(v[attribute].to_date) }
+    end
+
+    def grouping_key_for(date)
+      return "#{date.cweek}/#{date.year}" if params[:group_by] == 'week'
+      return "#{date.year}-#{date.month}" if params[:group_by] == 'month'
+
+      date
+    end
+
+    def accumulate_supports(grouped_votes)
+      grouped_votes.each do |group, votes|
+        grouped_votes[group] = votes.inject(0) { |sum, vote| sum + vote.vote_weight }
+      end
+
+      accumulated = 0
+      grouped_votes.each do |k, v|
+        accumulated += v
+        grouped_votes[k] = accumulated
+      end
+    end
+
+    def fill_holes(grouped_votes)
+      (start_date(proposal.published_at.to_date)..end_date).each do |date|
+        missing_key = grouping_key_for(date)
+        next if grouped_votes.key? missing_key
+
+        previous_key = previous_key_for(date)
+        previous_value = if grouped_votes.key? previous_key
+                           grouped_votes[previous_key]
+                         else
+                           0
+                         end
+
+        grouped_votes[missing_key] = previous_value
+      end
+
+      grouped_votes
+    end
+
+    def previous_key_for(date)
+      grouping_key_for(date - interval)
+    end
+
+    def interval
+      return 1.week if params[:group_by] == 'week'
+      return 1.month if params[:group_by] == 'month'
+      1.day
+    end
+  end
+end

app/controllers/dashboard/successful_supports_controller.rb

@@ -1,5 +1,6 @@
 class Dashboard::SuccessfulSupportsController < Dashboard::BaseController
   include Dashboard::ExpectsDateRange
+  include Dashboard::GroupSupports
 
   def index
     authorize! :dashboard, proposal
@@ -9,30 +10,9 @@ class Dashboard::SuccessfulSupportsController < Dashboard::BaseController
   private
 
   def accumulated_grouped_supports
-    grouped_votes = grouped_supports
-    grouped_votes.each do |group, votes|
-      grouped_votes[group] = votes.inject(0) { |sum, vote| sum + vote.vote_weight }
-    end
-
-    accumulated = 0
-    grouped_votes.each do |k, v|
-      accumulated += v
-      grouped_votes[k] = accumulated
-    end
-
-    grouped_votes
-  end
-
-  def grouped_supports
-    if params[:group_by] == 'week'
-      return supports.group_by { |v| "#{v.voted_at.to_date.cweek}/#{v.voted_at.to_date.year}" }
-    end
-
-    if params[:group_by] == 'month'
-      return supports.group_by { |v| "#{v.voted_at.to_date.year}-#{v.voted_at.to_date.month}" }
-    end
-
-    supports.group_by { |v| v.voted_at.to_date }
+    grouped_votes = grouped_supports(:voted_at)
+    accumulate_supports(grouped_votes)
+    fill_holes(grouped_votes)
   end
 
   def supports

app/controllers/dashboard/supports_controller.rb

@@ -1,5 +1,6 @@
 class Dashboard::SupportsController < Dashboard::BaseController
   include Dashboard::ExpectsDateRange
+  include Dashboard::GroupSupports
 
   def index
     authorize! :dashboard, proposal
@@ -9,59 +10,12 @@ class Dashboard::SupportsController < Dashboard::BaseController
   private
 
   def accumulated_supports
-    grouped_votes = grouped_supports
-    grouped_votes.each do |group, votes|
-      grouped_votes[group] = votes.inject(0) { |sum, vote| sum + vote.vote_weight }
-    end
-
-    accumulated = 0
-    grouped_votes.each do |k, v|
-      accumulated += v
-      grouped_votes[k] = accumulated
-    end
-
+    grouped_votes = grouped_supports(:created_at)
+    accumulate_supports(grouped_votes)
     fill_holes(grouped_votes)
   end
 
-  def grouped_supports
-    supports.group_by { |v| grouping_key_for(v.created_at) }
-  end
-
-  def grouping_key_for(created_at)
-    return "#{created_at.to_date.cweek}/#{created_at.to_date.year}" if params[:group_by] == 'week'
-    return "#{created_at.to_date.year}-#{created_at.to_date.month}" if params[:group_by] == 'month'
-
-    created_at.to_date
-  end
-
-  def fill_holes(grouped_votes)
-    (start_date(proposal.published_at.to_date)..end_date).step(interval).each do |date|
-      missing_key = grouping_key_for(date)
-      next if grouped_votes.key? missing_key
-
-      previous_key = previous_key_for(date)
-      previous_value = if grouped_votes.key? previous_key
-                         grouped_votes[previous_key]
-                       else
-                         0
-                       end
-
-      grouped_votes[missing_key] = previous_value
-    end
-
-    grouped_votes
-  end
-
-  def previous_key_for(date)
-    grouping_key_for(date - interval)
-  end
-
-  def interval
-    return 1.week if params[:group_by] == 'week'
-    return 1.month if params[:group_by] == 'month'
-    1.day
-  end
-
+  
   def supports
     @supports ||= Vote
                     .where(votable: proposal, created_at: start_date.beginning_of_day..end_date.end_of_day)

spec/requests/dashboard/successful_supports_spec.rb

@@ -1,8 +1,8 @@
 require 'rails_helper'
 
 describe "Retrieves number of supports for the successful proposal" do
-  let(:created_at) { DateTime.parse("2018-01-01 12:00:00") }
-  let(:proposal) { create(:proposal, created_at: created_at) }
+  let(:created_at) { Time.now.beginning_of_day - 9.days }
+  let(:proposal) { create(:proposal, created_at: created_at, published_at: created_at) }
 
   before do
     @successful_proposal_id = Setting['proposals.successful_proposal_id']
@@ -32,7 +32,7 @@ describe "Retrieves number of supports for the successful proposal" do
     json = JSON.parse(response.body, symbolize_names: true)
 
     expect(response).to have_http_status(200)
-    expect(json.length).to eq(8)
+    expect(json.length).to eq(10)
     expect(json.values.last).to eq(8)
   end
 
@@ -52,7 +52,8 @@ describe "Retrieves number of supports for the successful proposal" do
     json = JSON.parse(response.body, symbolize_names: true)
 
     expect(response).to have_http_status(200)
-    expect(json.length).to eq(1)
+    expect(json.length).to be >= 1
+    expect(json.length).to be <= 2
     expect(json.values.last).to eq(8)
   end
 end

spec/requests/dashboard/supports_spec.rb

@@ -1,7 +1,7 @@
 require 'rails_helper'
 
 describe "Retrieves number of supports for a proposal" do
-  let(:created_at) { DateTime.parse("2018-01-01 12:00:00") }
+  let(:created_at) { Time.now - 9.days }
   let(:proposal) { create(:proposal, created_at: created_at, published_at: created_at) }
 
   before do
@@ -19,7 +19,7 @@ describe "Retrieves number of supports for a proposal" do
     json = JSON.parse(response.body, symbolize_names: true)
 
     expect(response).to have_http_status(200)
-    expect(json.length).to eq(8)
+    expect(json.length).to eq(10)
     expect(json.values.last).to eq(8)
   end
 
@@ -39,7 +39,8 @@ describe "Retrieves number of supports for a proposal" do
     json = JSON.parse(response.body, symbolize_names: true)
 
     expect(response).to have_http_status(200)
-    expect(json.length).to eq(1)
+    expect(json.length).to be >= 1
+    expect(json.length).to be <= 2
     expect(json.values.last).to eq(8)
   end
 end