Apply Style/CollectionMethods rubocop rule

We were already using `map` and `reduce` almost everywhere.

.rubocop.yml

@@ -379,6 +379,9 @@ Style/ClassCheck:
 Style/ClassVars:
   Enabled: true
 
+Style/CollectionMethods:
+  Enabled: true
+
 Style/Not:
   Enabled: true
 

app/controllers/admin/stats_controller.rb

@@ -80,9 +80,9 @@ class Admin::StatsController < Admin::BaseController
 
     @vote_count = @budget.lines.count
 
-    @vote_count_by_heading = @budget.lines.group(:heading_id).count.collect { |k, v| [Budget::Heading.find(k).name, v] }.sort
+    @vote_count_by_heading = @budget.lines.group(:heading_id).count.map { |k, v| [Budget::Heading.find(k).name, v] }.sort
 
-    @user_count_by_district = User.where.not(balloted_heading_id: nil).group(:balloted_heading_id).count.collect { |k, v| [Budget::Heading.find(k).name, v] }.sort
+    @user_count_by_district = User.where.not(balloted_heading_id: nil).group(:balloted_heading_id).count.map { |k, v| [Budget::Heading.find(k).name, v] }.sort
   end
 
   def polls

app/controllers/concerns/dashboard/group_supports.rb

@@ -15,7 +15,7 @@ module Dashboard::GroupSupports
 
     def accumulate_supports(grouped_votes)
       grouped_votes.each do |group, votes|
-        grouped_votes[group] = votes.inject(0) { |sum, vote| sum + vote.vote_weight }
+        grouped_votes[group] = votes.reduce(0) { |sum, vote| sum + vote.vote_weight }
       end
 
       accumulated = 0

app/controllers/concerns/remotely_translatable.rb

@@ -20,7 +20,7 @@ module RemotelyTranslatable
     end
 
     def resources_groups(*args)
-      feeds = args.detect { |arg| arg&.first.class == Widget::Feed } || []
+      feeds = args.find { |arg| arg&.first.class == Widget::Feed } || []
 
       args.compact - [feeds] + feeds.map(&:items)
     end

app/controllers/tracking/budget_investments_controller.rb

@@ -58,7 +58,7 @@ class Tracking::BudgetInvestmentsController < Tracking::BaseController
                               }
                             ]
 
-      investment_headings.inject(all_headings_filter) do |filters, heading|
+      investment_headings.reduce(all_headings_filter) do |filters, heading|
         filters << {
           name: heading.name,
           id: heading.id,

app/controllers/valuation/budget_investments_controller.rb

@@ -83,7 +83,7 @@ class Valuation::BudgetInvestmentsController < Valuation::BaseController
                               }
                             ]
 
-      investment_headings.inject(all_headings_filter) do |filters, heading|
+      investment_headings.reduce(all_headings_filter) do |filters, heading|
         filters << {
                      name: heading.name,
                      id: heading.id,

app/helpers/admin_helper.rb

@@ -83,9 +83,7 @@ module AdminHelper
   end
 
   def admin_select_options
-    Administrator.with_user
-                 .collect { |v| [v.description_or_name, v.id] }
-                 .sort_by { |a| a[0] }
+    Administrator.with_user.map { |v| [v.description_or_name, v.id] }.sort_by { |a| a[0] }
   end
 
   def admin_submit_action(resource)

app/helpers/geozones_helper.rb

@@ -4,6 +4,6 @@ module GeozonesHelper
   end
 
   def geozone_select_options
-    Geozone.all.order(name: :asc).collect { |g| [g.name, g.id] }
+    Geozone.all.order(name: :asc).map { |g| [g.name, g.id] }
   end
 end

app/helpers/polls_helper.rb

@@ -1,6 +1,6 @@
 module PollsHelper
   def poll_select_options(include_all = nil)
-    options = @polls.collect do |poll|
+    options = @polls.map do |poll|
       [poll.name, current_path_with_query_params(poll_id: poll.id)]
     end
     options << all_polls if include_all

app/helpers/proposals_helper.rb

@@ -28,7 +28,7 @@ module ProposalsHelper
   end
 
   def retire_proposals_options
-    Proposal::RETIRE_OPTIONS.collect { |option| [t("proposals.retire_options.#{option}"), option] }
+    Proposal::RETIRE_OPTIONS.map { |option| [t("proposals.retire_options.#{option}"), option] }
   end
 
   def empty_recommended_proposals_message_text(user)

app/helpers/shifts_helper.rb

@@ -8,7 +8,7 @@ module ShiftsHelper
   def shift_recount_scrutiny_dates(booth, polls)
     return [] if polls.blank?
 
-    dates = polls.map(&:ends_at).map(&:to_date).sort.inject([]) do |total, date|
+    dates = polls.map(&:ends_at).map(&:to_date).sort.reduce([]) do |total, date|
       initial_date = date < Date.current ? Date.current : date
       total << (initial_date..date + Poll::RECOUNT_DURATION).to_a
     end
@@ -33,7 +33,7 @@ module ShiftsHelper
   end
 
   def officer_select_options(officers)
-    officers.collect { |officer| [officer.name, officer.id] }
+    officers.map { |officer| [officer.name, officer.id] }
   end
 
   private

app/helpers/translatable_form_helper.rb

@@ -60,7 +60,7 @@ module TranslatableFormHelper
       end
 
       def existing_translation_for(locale)
-        @object.translations.detect { |translation| translation.locale == locale }
+        @object.translations.find { |translation| translation.locale == locale }
       end
 
       def new_translation_for(locale)

app/helpers/user_segments_helper.rb

@@ -1,6 +1,6 @@
 module UserSegmentsHelper
   def user_segments_options
-    UserSegments::SEGMENTS.collect do |user_segment_name|
+    UserSegments::SEGMENTS.map do |user_segment_name|
       [t("admin.segment_recipient.#{user_segment_name}"), user_segment_name]
     end
   end

app/helpers/valuation_helper.rb

@@ -5,11 +5,11 @@ module ValuationHelper
 
   def valuator_select_options
     Valuator.order("description ASC").order("users.email ASC").includes(:user).
-             collect { |v| [v.description_or_email, "valuator_#{v.id}"] }
+             map { |v| [v.description_or_email, "valuator_#{v.id}"] }
   end
 
   def valuator_group_select_options
-    ValuatorGroup.order("name ASC").collect { |g| [g.name, "group_#{g.id}"] }
+    ValuatorGroup.order("name ASC").map { |g| [g.name, "group_#{g.id}"] }
   end
 
   def explanation_field(field)

app/models/budget/investment.rb

@@ -376,11 +376,11 @@ class Budget
     end
 
     def assigned_valuators
-      self.valuators.collect(&:description_or_name).compact.join(", ").presence
+      self.valuators.map(&:description_or_name).compact.join(", ").presence
     end
 
     def assigned_valuation_groups
-      self.valuator_groups.collect(&:name).compact.join(", ").presence
+      self.valuator_groups.map(&:name).compact.join(", ").presence
     end
 
     def valuation_tag_list

app/models/budget/stats.rb

@@ -54,7 +54,7 @@ class Budget::Stats
   end
 
   def total_votes
-    budget.ballots.pluck(:ballot_lines_count).inject(0) { |sum, x| sum + x }
+    budget.ballots.pluck(:ballot_lines_count).reduce(0) { |sum, x| sum + x }
   end
 
   def total_selected_investments
@@ -72,18 +72,18 @@ class Budget::Stats
     end
 
     groups[:total] = Hash.new(0)
-    groups[:total][:total_investments_count] = groups.collect { |_k, v| v[:total_investments_count] }.sum
-    groups[:total][:total_participants_support_phase] = groups.collect { |_k, v| v[:total_participants_support_phase] }.sum
-    groups[:total][:total_participants_vote_phase] = groups.collect { |_k, v| v[:total_participants_vote_phase] }.sum
-    groups[:total][:total_participants_every_phase] = groups.collect { |_k, v| v[:total_participants_every_phase] }.sum
+    groups[:total][:total_investments_count] = groups.map { |_k, v| v[:total_investments_count] }.sum
+    groups[:total][:total_participants_support_phase] = groups.map { |_k, v| v[:total_participants_support_phase] }.sum
+    groups[:total][:total_participants_vote_phase] = groups.map { |_k, v| v[:total_participants_vote_phase] }.sum
+    groups[:total][:total_participants_every_phase] = groups.map { |_k, v| v[:total_participants_every_phase] }.sum
 
     budget.headings.each do |heading|
       groups[heading.id].merge!(calculate_heading_stats_with_totals(groups[heading.id], groups[:total], heading.population))
     end
 
-    groups[:total][:percentage_participants_support_phase] = groups.collect { |_k, v| v[:percentage_participants_support_phase] }.sum
-    groups[:total][:percentage_participants_vote_phase] = groups.collect { |_k, v| v[:percentage_participants_vote_phase] }.sum
-    groups[:total][:percentage_participants_every_phase] = groups.collect { |_k, v| v[:percentage_participants_every_phase] }.sum
+    groups[:total][:percentage_participants_support_phase] = groups.map { |_k, v| v[:percentage_participants_support_phase] }.sum
+    groups[:total][:percentage_participants_vote_phase] = groups.map { |_k, v| v[:percentage_participants_vote_phase] }.sum
+    groups[:total][:percentage_participants_every_phase] = groups.map { |_k, v| v[:percentage_participants_every_phase] }.sum
 
     groups
   end

app/models/concerns/search_cache.rb

@@ -15,7 +15,7 @@ module SearchCache
     def searchable_values_sql
       searchable_values
         .select { |k, _| k.present? }
-        .collect { |value, weight| set_tsvector(value, weight) }
+        .map { |value, weight| set_tsvector(value, weight) }
         .join(" || ")
     end
 

app/models/poll/question.rb

@@ -71,7 +71,7 @@ class Poll::Question < ApplicationRecord
   end
 
   def answers_total_votes
-    question_answers.visibles.inject(0) { |total, question_answer| total + question_answer.total_votes }
+    question_answers.visibles.reduce(0) { |total, question_answer| total + question_answer.total_votes }
   end
 
   def most_voted_answer_id

app/models/signature.rb

@@ -71,7 +71,7 @@ class Signature < ApplicationRecord
   end
 
   def in_census?
-    document_types.detect do |document_type|
+    document_types.find do |document_type|
       response = CensusCaller.new.call(document_type, document_number, date_of_birth, postal_code)
       if response.valid?
         @census_api_response = response

app/models/signature_sheet.rb

@@ -35,7 +35,7 @@ class SignatureSheet < ApplicationRecord
   end
 
   def parsed_required_fields_to_verify_groups
-    required_fields_to_verify.split(/[;]/).collect { |d| d.gsub(/\s+/, "") }.map { |group| group.split(/[,]/) }
+    required_fields_to_verify.split(/[;]/).map { |d| d.gsub(/\s+/, "") }.map { |group| group.split(/[,]/) }
   end
 
   def signable_found

app/models/widget/feed.rb

@@ -12,7 +12,7 @@ class Widget::Feed < ApplicationRecord
   end
 
   def self.active
-    KINDS.collect do |kind|
+    KINDS.map do |kind|
       feed = find_or_create_by!(kind: kind)
       feed if feed.active?
     end.compact

bin/spring

@@ -8,7 +8,7 @@ unless defined?(Spring)
   require "bundler"
 
   lockfile = Bundler::LockfileParser.new(Bundler.default_lockfile.read)
-  spring = lockfile.specs.detect { |spec| spec.name == "spring" }
+  spring = lockfile.specs.find { |spec| spec.name == "spring" }
   if spring
     Gem.use_paths Gem.dir, Bundler.bundle_path.to_s, *Gem.path
     gem "spring", spring.version

lib/tasks/proposal_actions.rake

@@ -384,7 +384,7 @@ namespace :proposal_actions do
       5
     ]
 
-    votes_count = expected_supports.inject(0.0) { |sum, x| sum + x }
+    votes_count = expected_supports.reduce(0.0) { |sum, x| sum + x }
     goal_votes = Setting["votes_for_proposal_success"].to_f
     cached_votes_up = 0
 

spec/features/budgets/investments_spec.rb

@@ -632,11 +632,11 @@ describe "Budget Investments" do
       visit budget_investments_path(budget, heading_id: heading.id)
 
       within(".submenu .is-active") { expect(page).to have_content "random" }
-      order = all(".budget-investment h3").collect { |i| i.text }
+      order = all(".budget-investment h3").map { |i| i.text }
       expect(order).not_to be_empty
 
       visit budget_investments_path(budget, heading_id: heading.id)
-      new_order = all(".budget-investment h3").collect { |i| i.text }
+      new_order = all(".budget-investment h3").map { |i| i.text }
 
       expect(order).to eq(new_order)
     end
@@ -645,14 +645,14 @@ describe "Budget Investments" do
       (per_page + 2).times { create(:budget_investment, heading: heading) }
 
       visit budget_investments_path(budget, heading_id: heading.id)
-      order = all(".budget-investment h3").collect { |i| i.text }
+      order = all(".budget-investment h3").map { |i| i.text }
       expect(order).not_to be_empty
 
       click_link "highest rated"
       click_link "random"
 
       visit budget_investments_path(budget, heading_id: heading.id)
-      new_order = all(".budget-investment h3").collect { |i| i.text }
+      new_order = all(".budget-investment h3").map { |i| i.text }
 
       expect(order).to eq(new_order)
     end
@@ -662,7 +662,7 @@ describe "Budget Investments" do
 
       visit budget_investments_path(budget, heading_id: heading.id)
 
-      order = all(".budget-investment h3").collect { |i| i.text }
+      order = all(".budget-investment h3").map { |i| i.text }
       expect(order).not_to be_empty
 
       click_link "Next"
@@ -671,7 +671,7 @@ describe "Budget Investments" do
       click_link "Previous"
       expect(page).to have_content "You're on page 1"
 
-      new_order = all(".budget-investment h3").collect { |i| i.text }
+      new_order = all(".budget-investment h3").map { |i| i.text }
       expect(order).to eq(new_order)
     end
 
@@ -680,13 +680,13 @@ describe "Budget Investments" do
 
       visit budget_investments_path(budget, heading_id: heading.id)
 
-      order = all(".budget-investment h3").collect { |i| i.text }
+      order = all(".budget-investment h3").map { |i| i.text }
       expect(order).not_to be_empty
 
       click_link Budget::Investment.first.title
       click_link "Go back"
 
-      new_order = all(".budget-investment h3").collect { |i| i.text }
+      new_order = all(".budget-investment h3").map { |i| i.text }
       expect(order).to eq(new_order)
     end
 
@@ -812,11 +812,11 @@ describe "Budget Investments" do
       budget.update!(phase: "finished")
 
       visit budget_investments_path(budget, heading_id: heading.id)
-      order = all(".budget-investment h3").collect { |i| i.text }
+      order = all(".budget-investment h3").map { |i| i.text }
       expect(order).not_to be_empty
 
       visit budget_investments_path(budget, heading_id: heading.id)
-      new_order = all(".budget-investment h3").collect { |i| i.text }
+      new_order = all(".budget-investment h3").map { |i| i.text }
 
       expect(order).to eq(new_order)
     end
@@ -844,7 +844,7 @@ describe "Budget Investments" do
     end
 
     def investments_order
-      all(".budget-investment h3").collect { |i| i.text }
+      all(".budget-investment h3").map { |i| i.text }
     end
   end
 
@@ -1038,7 +1038,7 @@ describe "Budget Investments" do
 
       visit new_budget_investment_path(budget)
 
-      select_options = find("#budget_investment_heading_id").all("option").collect(&:text)
+      select_options = find("#budget_investment_heading_id").all("option").map(&:text)
       expect(select_options).to eq ["",
                                     "Toda la ciudad",
                                     "Health: More health professionals",

spec/features/legislation/proposals_spec.rb

@@ -133,7 +133,7 @@ describe "Legislation Proposals" do
   end
 
   def legislation_proposals_order
-    all("[id^='legislation_proposal_']").collect { |e| e[:id] }
+    all("[id^='legislation_proposal_']").map { |e| e[:id] }
   end
 
   scenario "Create a legislation proposal with an image", :js do

spec/lib/graphql_spec.rb

@@ -23,7 +23,7 @@ end
 
 def extract_fields(response, collection_name, field_chain)
   fields = field_chain.split(".")
-  dig(response, "data.#{collection_name}.edges").collect do |node|
+  dig(response, "data.#{collection_name}.edges").map do |node|
     begin
       if fields.size > 1
         node["node"][fields.first][fields.second]
@@ -60,8 +60,8 @@ describe "Consul Schema" do
     comment_2 = create(:comment, author: comments_author, commentable: proposal)
 
     response = execute("{ proposal(id: #{proposal.id}) { comments { edges { node { body } } } } }")
-    comments = dig(response, "data.proposal.comments.edges").collect { |edge| edge["node"] }
-    comment_bodies = comments.collect { |comment| comment["body"] }
+    comments = dig(response, "data.proposal.comments.edges").map { |edge| edge["node"] }
+    comment_bodies = comments.map { |comment| comment["body"] }
 
     expect(comment_bodies).to match_array([comment_1.body, comment_2.body])
   end

spec/models/local_census_records/import_spec.rb

@@ -59,7 +59,7 @@ describe LocalCensusRecords::Import do
       import.save!
 
       valid_document_numbers = ["44556678T", "33556678T", "22556678T", "X11556678"]
-      expect(import.created_records.collect(&:document_number)).to eq(valid_document_numbers)
+      expect(import.created_records.map(&:document_number)).to eq(valid_document_numbers)
     end
 
     it "Add invalid local census records to invalid_records array" do
@@ -74,13 +74,13 @@ describe LocalCensusRecords::Import do
       invalid_records_date_of_births = [Date.parse("07/08/1984"), Date.parse("07/08/1985"), nil,
         Date.parse("07/08/1987")]
       invalid_records_postal_codes = ["7008", "7009", "7010", nil]
-      expect(import.invalid_records.collect(&:document_type))
+      expect(import.invalid_records.map(&:document_type))
         .to eq(invalid_records_document_types)
-      expect(import.invalid_records.collect(&:document_number))
+      expect(import.invalid_records.map(&:document_number))
         .to eq(invalid_records_document_numbers)
-      expect(import.invalid_records.collect(&:date_of_birth))
+      expect(import.invalid_records.map(&:date_of_birth))
         .to eq(invalid_records_date_of_births)
-      expect(import.invalid_records.collect(&:postal_code))
+      expect(import.invalid_records.map(&:postal_code))
       .to eq(invalid_records_postal_codes)
     end
   end