Revert "update rails dependencies"

Original commit broke the build, since some dependencies have breaking
changes.

This reverts commit f753392d49.

.rubocop.yml

@@ -12,7 +12,7 @@ Rails:
   Enabled: true
 
 Metrics/LineLength:
-  Max: 100
+  Max: 120
 
 Metrics/AbcSize:
   Max: 16
@@ -22,3 +22,8 @@ Style/Documentation:
 
 Style/EmptyMethod:
   EnforcedStyle: expanded
+
+# I like this cop, but occasionally code is more readable without a guard clause,
+# and I don't want to write rubocop:disable comments every time that happens
+Style/GuardClause:
+  Enabled: false

Gemfile

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 source 'https://rubygems.org'
 ruby '2.3.0'
 
@@ -37,7 +38,7 @@ gem 'uglifier'
 
 group :test do
   gem 'brakeman', require: false
-  gem 'factory_girl_rails'
+  gem 'factory_bot_rails'
   gem 'json-schema'
   gem 'rspec-rails'
   gem 'shoulda-matchers'
@@ -47,10 +48,10 @@ end
 group :development, :test do
   gem 'better_errors'
   gem 'binding_of_caller'
+  gem 'faker'
   gem 'pry-byebug'
   gem 'pry-rails'
-  gem 'rubocop'
-  gem 'tunemygc'
-  gem 'faker'
+  gem 'rubocop', '~> 0.48.1' # match code climate https://github.com/tootsuite/mastodon/issues/1758
   gem 'timecop'
+  gem 'tunemygc'
 end

Gemfile.lock

@@ -105,10 +105,10 @@ GEM
       actionmailer (>= 4.0, < 6)
       activesupport (>= 4.0, < 6)
     execjs (2.7.0)
-    factory_girl (4.8.0)
+    factory_bot (4.8.2)
       activesupport (>= 3.0.0)
-    factory_girl_rails (4.8.0)
-      factory_girl (~> 4.8.0)
+    factory_bot_rails (4.8.2)
+      factory_bot (~> 4.8.2)
       railties (>= 3.0.0)
     faker (1.8.4)
       i18n (~> 0.5)
@@ -117,7 +117,8 @@ GEM
       activesupport (>= 4.2.0)
     httparty (0.15.6)
       multi_xml (>= 0.5.2)
-    i18n (0.8.6)
+    i18n (0.9.3)
+      concurrent-ruby (~> 1.0)
     jmespath (1.3.1)
     jquery-rails (4.3.1)
       rails-dom-testing (>= 1, < 3)
@@ -153,22 +154,21 @@ GEM
       mime-types-data (~> 3.2015)
     mime-types-data (3.2016.0521)
     mimemagic (0.3.2)
-    mini_portile2 (2.2.0)
-    minitest (5.10.3)
+    mini_portile2 (2.3.0)
+    minitest (5.11.1)
     multi_xml (0.6.0)
     nio4r (2.1.0)
-    nokogiri (1.8.0)
-      mini_portile2 (~> 2.2.0)
+    nokogiri (1.8.1)
+      mini_portile2 (~> 2.3.0)
     orm_adapter (0.5.0)
-    paperclip (5.1.0)
+    paperclip (5.2.0)
       activemodel (>= 4.2.0)
       activesupport (>= 4.2.0)
       cocaine (~> 0.5.5)
       mime-types
       mimemagic (~> 0.3.0)
-    parallel (1.12.0)
-    parser (2.4.0.0)
-      ast (~> 2.2)
+    parser (2.4.0.2)
+      ast (~> 2.3)
     pg (0.21.0)
     powerpack (0.1.1)
     pry (0.10.4)
@@ -216,7 +216,7 @@ GEM
       thor (>= 0.18.1, < 2.0)
     rainbow (2.2.2)
       rake
-    rake (12.0.0)
+    rake (12.3.0)
     rb-fsevent (0.10.2)
     rb-inotify (0.9.10)
       ffi (>= 0.5.0, < 2)
@@ -241,14 +241,13 @@ GEM
       rspec-mocks (~> 3.6.0)
       rspec-support (~> 3.6.0)
     rspec-support (3.6.0)
-    rubocop (0.49.1)
-      parallel (~> 1.10)
+    rubocop (0.48.1)
       parser (>= 2.3.3.1, < 3.0)
       powerpack (~> 0.1)
       rainbow (>= 1.99.1, < 3.0)
       ruby-progressbar (~> 1.7)
       unicode-display_width (~> 1.0, >= 1.0.1)
-    ruby-progressbar (1.8.1)
+    ruby-progressbar (1.9.0)
     sass (3.5.1)
       sass-listen (~> 4.0.0)
     sass-listen (4.0.0)
@@ -285,7 +284,7 @@ GEM
     tilt (2.0.8)
     timecop (0.9.1)
     tunemygc (1.0.69)
-    tzinfo (1.2.3)
+    tzinfo (1.2.4)
       thread_safe (~> 0.1)
     uglifier (3.2.0)
       execjs (>= 0.3.0, < 3)
@@ -312,7 +311,7 @@ DEPENDENCIES
   doorkeeper
   dotenv-rails
   exception_notification
-  factory_girl_rails
+  factory_bot_rails
   faker
   httparty
   jquery-rails
@@ -333,7 +332,7 @@ DEPENDENCIES
   rails (~> 5.0.0)
   redis (~> 3.3.3)
   rspec-rails
-  rubocop
+  rubocop (~> 0.48.1)
   sass-rails
   shoulda-matchers
   simplecov
@@ -348,4 +347,4 @@ RUBY VERSION
    ruby 2.3.0p0
 
 BUNDLED WITH
-   1.15.4
+   1.16.1

Rakefile

@@ -1,5 +1,6 @@
 #!/usr/bin/env rake
 # frozen_string_literal: true
+
 # Add your own tasks in files placed in lib/tasks ending in .rake,
 # for example lib/tasks/capistrano.rake, and they will automatically be available to Rake.
 

app/channels/application_cable/channel.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 module ApplicationCable
   class Channel < ActionCable::Channel::Base
   end

app/channels/application_cable/connection.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 module ApplicationCable
   class Connection < ActionCable::Connection::Base
     identified_by :current_user

app/channels/map_channel.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 class MapChannel < ApplicationCable::Channel
   # Called when the consumer has successfully
   # become a subscriber of this channel.

app/controllers/access_controller.rb

@@ -1,11 +1,12 @@
 # frozen_string_literal: true
+
 class AccessController < ApplicationController
-  before_action :require_user, only: [:access, :access_request,
-                                      :approve_access, :approve_access_post,
-                                      :deny_access, :deny_access_post, :request_access]
-  before_action :set_map, only: [:access, :access_request,
-                                 :approve_access, :approve_access_post,
-                                 :deny_access, :deny_access_post, :request_access]
+  before_action :require_user, only: %i[access access_request
+                                        approve_access approve_access_post
+                                        deny_access deny_access_post request_access]
+  before_action :set_map, only: %i[access access_request
+                                   approve_access approve_access_post
+                                   deny_access deny_access_post request_access]
   after_action :verify_authorized
 
   # GET maps/:id/request_access

app/controllers/api/v1/deprecated_controller.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 module Api
   module V1
     class DeprecatedController < ApplicationController

app/controllers/api/v2/mappings_controller.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 module Api
   module V2
     class MappingsController < WithUpdatesController

app/controllers/api/v2/maps_controller.rb

@@ -1,9 +1,10 @@
 # frozen_string_literal: true
+
 module Api
   module V2
     class MapsController < WithUpdatesController
       def searchable_columns
-        [:name, :desc]
+        %i[name desc]
       end
 
       def apply_filters(collection)

app/controllers/api/v2/metacodes_controller.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 module Api
   module V2
     class MetacodesController < RestfulController

app/controllers/api/v2/restful_controller.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 module Api
   module V2
     class RestfulController < ActionController::Base
@@ -7,7 +8,7 @@ module Api
 
       snorlax_used_rest!
 
-      before_action :load_resource, only: [:show, :update, :destroy]
+      before_action :load_resource, only: %i[show update destroy]
       after_action :verify_authorized
 
       def index
@@ -91,7 +92,7 @@ module Api
       end
 
       def doorkeeper_user
-        return unless doorkeeper_token.present?
+        return if doorkeeper_token.blank?
         doorkeeper_render_error unless valid_doorkeeper_token?
         @doorkeeper_user ||= User.find(doorkeeper_token.resource_owner_id)
       end

app/controllers/api/v2/sessions_controller.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 module Api
   module V2
     class SessionsController < ApplicationController

app/controllers/api/v2/stars_controller.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 module Api
   module V2
     class StarsController < RestfulController

app/controllers/api/v2/synapses_controller.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 module Api
   module V2
     class SynapsesController < WithUpdatesController

app/controllers/api/v2/tokens_controller.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 module Api
   module V2
     class TokensController < RestfulController

app/controllers/api/v2/topics_controller.rb

@@ -1,9 +1,10 @@
 # frozen_string_literal: true
+
 module Api
   module V2
     class TopicsController < WithUpdatesController
       def searchable_columns
-        [:name, :desc, :link]
+        %i[name desc link]
       end
     end
   end

app/controllers/api/v2/users_controller.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 module Api
   module V2
     class UsersController < RestfulController

app/controllers/api/v2/with_updates_controller.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 module Api
   module V2
     class WithUpdatesController < RestfulController

app/controllers/application_controller.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 class ApplicationController < ActionController::Base
   include ApplicationHelper
   include Pundit

app/controllers/explore_controller.rb

@@ -1,6 +1,7 @@
 # frozen_string_literal: true
+
 class ExploreController < ApplicationController
-  before_action :require_authentication, only: [:mine, :shared, :starred]
+  before_action :require_authentication, only: %i[mine shared starred]
   before_action :authorize_explore
   after_action :verify_authorized
   after_action :verify_policy_scoped

app/controllers/hacks_controller.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 # bad code that should be checked over before entering one of the
 # nice files from the right side of this repo
 class HacksController < ApplicationController

app/controllers/main_controller.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 class MainController < ApplicationController
   before_action :authorize_main
   after_action :verify_authorized

app/controllers/mappings_controller.rb

@@ -1,6 +1,7 @@
 # frozen_string_literal: true
+
 class MappingsController < ApplicationController
-  before_action :require_user, only: [:create, :update, :destroy]
+  before_action :require_user, only: %i[create update destroy]
   after_action :verify_authorized, except: :index
   after_action :verify_policy_scoped, only: :index
 

app/controllers/maps_controller.rb

@@ -1,7 +1,10 @@
 # frozen_string_literal: true
+
 class MapsController < ApplicationController
-  before_action :require_user, only: [:create, :update, :destroy, :events, :follow, :unfollow]
-  before_action :set_map, only: [:show, :conversation, :update, :destroy, :contains, :events, :export, :follow, :unfollow, :unfollow_from_email]
+  before_action :require_user, only: %i[create update destroy events follow unfollow]
+  before_action :set_map, only: %i[show conversation update destroy
+                                   contains events export
+                                   follow unfollow unfollow_from_email]
   after_action :verify_authorized
 
   # GET maps/:id
@@ -23,7 +26,7 @@ class MapsController < ApplicationController
       format.ttl { redirect_to action: :export, format: :ttl }
     end
   end
-  
+
   # GET maps/:id/conversation
   def conversation
     respond_to do |format|
@@ -140,7 +143,7 @@ class MapsController < ApplicationController
 
   # POST maps/:id/follow
   def follow
-    follow = FollowService.follow(@map, current_user, 'followed')  
+    follow = FollowService.follow(@map, current_user, 'followed')
 
     respond_to do |format|
       format.json do
@@ -155,7 +158,7 @@ class MapsController < ApplicationController
 
   # POST maps/:id/unfollow
   def unfollow
-    FollowService.unfollow(@map, current_user)  
+    FollowService.unfollow(@map, current_user)
 
     respond_to do |format|
       format.json do

app/controllers/messages_controller.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 class MessagesController < ApplicationController
   before_action :require_user, except: [:show]
   after_action :verify_authorized

app/controllers/metacode_sets_controller.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 class MetacodeSetsController < ApplicationController
   before_action :require_admin
 

app/controllers/metacodes_controller.rb

@@ -1,7 +1,8 @@
 # frozen_string_literal: true
+
 class MetacodesController < ApplicationController
-  before_action :require_admin, except: [:index, :show]
-  before_action :set_metacode, only: [:edit, :update]
+  before_action :require_admin, except: %i[index show]
+  before_action :set_metacode, only: %i[edit update]
 
   # GET /metacodes
   # GET /metacodes.json

app/controllers/notifications_controller.rb

@@ -1,8 +1,9 @@
 # frozen_string_literal: true
+
 class NotificationsController < ApplicationController
-  before_action :set_receipts, only: [:index, :show, :mark_read, :mark_unread]
-  before_action :set_notification, only: [:show, :mark_read, :mark_unread]
-  before_action :set_receipt, only: [:show, :mark_read, :mark_unread]
+  before_action :set_receipts, only: %i[index show mark_read mark_unread]
+  before_action :set_notification, only: %i[show mark_read mark_unread]
+  before_action :set_receipt, only: %i[show mark_read mark_unread]
 
   def index
     @notifications = current_user.mailbox.notifications.page(params[:page]).per(25)
@@ -27,14 +28,14 @@ class NotificationsController < ApplicationController
     respond_to do |format|
       format.html do
         case @notification.notification_code
-          when MAP_ACCESS_APPROVED, MAP_INVITE_TO_EDIT
-            redirect_to map_path(@notification.notified_object.map)
-          when TOPIC_ADDED_TO_MAP
-            redirect_to map_path(@notification.notified_object.map)
-          when TOPIC_CONNECTED_1
-            redirect_to topic_path(@notification.notified_object.topic1)
-          when TOPIC_CONNECTED_2
-            redirect_to topic_path(@notification.notified_object.topic2)
+        when MAP_ACCESS_APPROVED, MAP_INVITE_TO_EDIT
+          redirect_to map_path(@notification.notified_object.map)
+        when TOPIC_ADDED_TO_MAP
+          redirect_to map_path(@notification.notified_object.map)
+        when TOPIC_CONNECTED_1
+          redirect_to topic_path(@notification.notified_object.topic1)
+        when TOPIC_CONNECTED_2
+          redirect_to topic_path(@notification.notified_object.topic2)
         end
       end
       format.json do

app/controllers/search_controller.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 class SearchController < ApplicationController
   include TopicsHelper
   include MapsHelper
@@ -7,7 +8,7 @@ class SearchController < ApplicationController
 
   before_action :authorize_search
   after_action :verify_authorized
-  after_action :verify_policy_scoped, only: [:maps, :mappers, :synapses, :topics]
+  after_action :verify_policy_scoped, only: %i[maps mappers synapses topics]
 
   # get /search/topics?term=SOMETERM
   def topics
@@ -140,13 +141,13 @@ class SearchController < ApplicationController
     topic1id = params[:topic1id]
     topic2id = params[:topic2id]
 
-    if term && !term.empty?
+    if term.present?
       @synapses = policy_scope(Synapse)
                   .where('LOWER("desc") like ?', '%' + term.downcase.strip + '%')
                   .order('"desc"')
 
       @synapses = @synapses.uniq(&:desc)
-    elsif topic1id && !topic1id.empty?
+    elsif topic1id.present?
       one = policy_scope(Synapse).where(topic1_id: topic1id, topic2_id: topic2id)
       two = policy_scope(Synapse).where(topic2_id: topic1id, topic1_id: topic2id)
       @synapses = one + two

app/controllers/stars_controller.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 class StarsController < ApplicationController
   before_action :require_user
   before_action :set_map

app/controllers/synapses_controller.rb

@@ -1,8 +1,9 @@
 # frozen_string_literal: true
+
 class SynapsesController < ApplicationController
   include TopicsHelper
 
-  before_action :require_user, only: [:create, :update, :destroy]
+  before_action :require_user, only: %i[create update destroy]
   after_action :verify_authorized, except: :index
   after_action :verify_policy_scoped, only: :index
 

app/controllers/tokens_controller.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 class TokensController < ApplicationController
   before_action :require_user, only: [:new]
 

app/controllers/topics_controller.rb

@@ -1,11 +1,12 @@
 # frozen_string_literal: true
+
 class TopicsController < ApplicationController
   include TopicsHelper
 
-  before_action :require_user, only: [:create, :update, :destroy, :follow, :unfollow]
-  before_action :set_topic, only: [:show, :update, :relative_numbers,
-                                   :relatives, :network, :destroy,
-                                   :follow, :unfollow, :unfollow_from_email]
+  before_action :require_user, only: %i[create update destroy follow unfollow]
+  before_action :set_topic, only: %i[show update relative_numbers
+                                     relatives network destroy
+                                     follow unfollow unfollow_from_email]
   after_action :verify_authorized, except: :autocomplete_topic
 
   respond_to :html, :js, :json
@@ -13,7 +14,7 @@ class TopicsController < ApplicationController
   # GET /topics/autocomplete_topic
   def autocomplete_topic
     term = params[:term]
-    if term && !term.empty?
+    if term.present?
       topics = policy_scope(Topic)
                .where('LOWER("name") like ?', term.downcase + '%')
                .order('"name"')

app/controllers/users/passwords_controller.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 module Users
   class PasswordsController < Devise::PasswordsController
     protected

app/controllers/users/registrations_controller.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 module Users
   class RegistrationsController < Devise::RegistrationsController
     before_action :configure_sign_up_params, only: [:create]
@@ -29,7 +30,7 @@ module Users
     end
 
     def configure_sign_up_params
-      devise_parameter_sanitizer.permit(:sign_up, keys: [:name, :joinedwithcode])
+      devise_parameter_sanitizer.permit(:sign_up, keys: %i[name joinedwithcode])
     end
 
     def configure_account_update_params

app/controllers/users/sessions_controller.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 module Users
   class SessionsController < Devise::SessionsController
     after_action :store_location, only: [:new]

app/controllers/users_controller.rb

@@ -1,6 +1,7 @@
 # frozen_string_literal: true
+
 class UsersController < ApplicationController
-  before_action :require_user, only: [:edit, :update, :updatemetacodes, :update_metacode_focus]
+  before_action :require_user, only: %i[edit update updatemetacodes update_metacode_focus]
 
   respond_to :html, :json
 
@@ -41,7 +42,7 @@ class UsersController < ApplicationController
       correct_pass = @user.valid_password?(params[:current_password])
 
       if correct_pass && @user.update_attributes(user_params)
-        update_follow_settings(@user, params[:settings]) if is_tester(@user)
+        update_follow_settings(@user, params[:settings])
         @user.image = nil if params[:remove_image] == '1'
         @user.save
         sign_in(@user, bypass: true)
@@ -100,7 +101,7 @@ class UsersController < ApplicationController
     @user.settings.metacode_focus = params[:value]
     @user.save
     respond_to do |format|
-      format.json { render json: { success: "success" }}
+      format.json { render json: { success: 'success' } }
     end
   end
 

app/decorators/notification_decorator.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 class NotificationDecorator
   class << self
     def decorate(notification, receipt)

app/helpers/application_helper.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 module ApplicationHelper
   def invite_link
     "#{request.base_url}/join" + (current_user ? "?code=#{current_user.code}" : '')

app/helpers/content_helper.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 module ContentHelper
   def resource_name
     :user

app/helpers/devise_helper.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 module DeviseHelper
   def devise_error_messages!
     resource.errors.to_a[0]

app/helpers/in_metacode_sets_helper.rb

@@ -1,3 +1,4 @@
 # frozen_string_literal: true
+
 module InMetacodeSetsHelper
 end

app/helpers/main_helper.rb

@@ -1,3 +1,4 @@
 # frozen_string_literal: true
+
 module MainHelper
 end

app/helpers/map_mailer_helper.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module MapMailerHelper
   def access_approved_subject(map)
     map.name + ' - access approved'
@@ -5,9 +7,9 @@ module MapMailerHelper
 
   def access_request_subject(map)
     map.name + ' - request to edit'
-  end  
+  end
 
   def invite_to_edit_subject(map)
     map.name + ' - invited to edit'
   end
-end
+end

app/helpers/mapping_helper.rb

@@ -1,3 +1,4 @@
 # frozen_string_literal: true
+
 module MappingHelper
 end

app/helpers/maps_helper.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 module MapsHelper
   # JSON autocomplete format for typeahead
   def autocomplete_map_array_json(maps)

app/helpers/metacodes_helper.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 module MetacodesHelper
   def metacodeset
     metacodes = current_user.settings.metacodes

app/helpers/synapses_helper.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 module SynapsesHelper
   ## this one is for building our custom JSON autocomplete format for typeahead
   def autocomplete_synapse_generic_json(unique)

app/helpers/topic_mailer_helper.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 module TopicMailerHelper
   def added_to_map_subject(topic, map)
     topic.name + ' was added to map ' + map.name
@@ -7,4 +8,4 @@ module TopicMailerHelper
   def connected_subject(topic)
     'new synapse to topic ' + topic.name
   end
-end
+end

app/helpers/topics_helper.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 module TopicsHelper
   ## this one is for building our custom JSON autocomplete format for typeahead
   def autocomplete_array_json(topics)
@@ -16,7 +17,7 @@ module TopicsHelper
 
         rtype: is_map ? 'map' : 'topic',
         inmaps: is_map ? [] : t.inmaps(current_user),
-        inmapsLinks: is_map ? [] : t.inmapsLinks(current_user),
+        inmapsLinks: is_map ? [] : t.inmaps_links(current_user),
         type: is_map ? metamap_metacode.name : t.metacode.name,
         typeImageURL: is_map ? metamap_metacode.icon : t.metacode.icon,
         mapCount: is_map ? 0 : t.maps.count,

app/helpers/users_helper.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 module UsersHelper
   # build custom json autocomplete for typeahead
   def autocomplete_user_array_json(users)

app/mailers/application_mailer.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 class ApplicationMailer < ActionMailer::Base
   default from: 'team@metamaps.cc'
   layout 'mailer'
@@ -6,24 +7,24 @@ class ApplicationMailer < ActionMailer::Base
   class << self
     def mail_for_notification(notification)
       case notification.notification_code
-        when MAP_ACCESS_REQUEST
-          request = notification.notified_object
-          MapMailer.access_request(request)
-        when MAP_ACCESS_APPROVED
-          request = notification.notified_object
-          MapMailer.access_approved(request)
-        when MAP_INVITE_TO_EDIT
-          user_map = notification.notified_object
-          MapMailer.invite_to_edit(user_map)
-        when TOPIC_ADDED_TO_MAP
-          event = notification.notified_object
-          TopicMailer.added_to_map(event, notification.recipients[0])
-        when TOPIC_CONNECTED_1
-          synapse = notification.notified_object
-          TopicMailer.connected(synapse, synapse.topic1, notification.recipients[0])
-        when TOPIC_CONNECTED_2
-          synapse = notification.notified_object
-          TopicMailer.connected(synapse, synapse.topic2, notification.recipients[0])
+      when MAP_ACCESS_REQUEST
+        request = notification.notified_object
+        MapMailer.access_request(request)
+      when MAP_ACCESS_APPROVED
+        request = notification.notified_object
+        MapMailer.access_approved(request)
+      when MAP_INVITE_TO_EDIT
+        user_map = notification.notified_object
+        MapMailer.invite_to_edit(user_map)
+      when TOPIC_ADDED_TO_MAP
+        event = notification.notified_object
+        TopicMailer.added_to_map(event, notification.recipients[0])
+      when TOPIC_CONNECTED_1
+        synapse = notification.notified_object
+        TopicMailer.connected(synapse, synapse.topic1, notification.recipients[0])
+      when TOPIC_CONNECTED_2
+        synapse = notification.notified_object
+        TopicMailer.connected(synapse, synapse.topic2, notification.recipients[0])
       end
     end
   end

app/mailers/map_activity_mailer.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 class MapActivityMailer < ApplicationMailer
   default from: 'team@metamaps.cc'
 

app/mailers/map_mailer.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 class MapMailer < ApplicationMailer
   include MapMailerHelper
   default from: 'team@metamaps.cc'

app/mailers/topic_mailer.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 class TopicMailer < ApplicationMailer
   include TopicMailerHelper
   default from: 'team@metamaps.cc'

app/models/access_request.rb

@@ -1,9 +1,10 @@
 # frozen_string_literal: true
+
 class AccessRequest < ApplicationRecord
   belongs_to :user
   belongs_to :map
   has_one    :user_map
-  
+
   after_create :after_created_async
 
   def approve
@@ -27,9 +28,9 @@ class AccessRequest < ApplicationRecord
       Mailboxer::Receipt.where(notification: notification).update_all(is_read: true)
     end
   end
-  
+
   protected
-  
+
   def after_created_async
     NotificationService.access_request(self)
   end

app/models/application_record.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 class ApplicationRecord < ActiveRecord::Base
   self.abstract_class = true
 end

app/models/attachment.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 class Attachment < ApplicationRecord
   belongs_to :attachable, polymorphic: true
 

app/models/concerns/attachable.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 module Attachable
   extend ActiveSupport::Concern
 

app/models/concerns/routing.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 module Routing
   extend ActiveSupport::Concern
   include Rails.application.routes.url_helpers

app/models/event.rb

@@ -1,16 +1,17 @@
 # frozen_string_literal: true
+
 class Event < ApplicationRecord
-  KINDS = %w(user_present_on_map user_not_present_on_map
+  KINDS = %w[user_present_on_map user_not_present_on_map
              conversation_started_on_map
              topic_added_to_map topic_moved_on_map topic_removed_from_map
              synapse_added_to_map synapse_removed_from_map
-             topic_updated synapse_updated).freeze
+             topic_updated synapse_updated].freeze
 
   belongs_to :eventable, polymorphic: true
   belongs_to :map
   belongs_to :user
 
-  scope :chronologically, -> { order('created_at asc') }
+  scope :chronologically, (-> { order('created_at asc') })
 
   after_create :notify_webhooks!, if: :map
 

app/models/events/conversation_started_on_map.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 module Events
   class ConversationStartedOnMap < Event
     # after_create :notify_users!

app/models/events/synapse_added_to_map.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 module Events
   class SynapseAddedToMap < Event
     # after_create :notify_users!

app/models/events/synapse_removed_from_map.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 module Events
   class SynapseRemovedFromMap < Event
     # after_create :notify_users!

app/models/events/synapse_updated.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 module Events
   class SynapseUpdated < Event
     # after_create :notify_users!

app/models/events/topic_added_to_map.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 module Events
   class TopicAddedToMap < Event
     after_create :notify_users!
@@ -10,7 +11,7 @@ module Events
               user: user,
               meta: meta)
     end
-    
+
     def notify_users!
       # in the future, notify followers of both the topic, and the map
       NotificationService.notify_followers(eventable, TOPIC_ADDED_TO_MAP, self)

app/models/events/topic_moved_on_map.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 module Events
   class TopicMovedOnMap < Event
     # after_create :notify_users!

app/models/events/topic_removed_from_map.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 module Events
   class TopicRemovedFromMap < Event
     # after_create :notify_users!

app/models/events/topic_updated.rb

@@ -1,7 +1,8 @@
 # frozen_string_literal: true
+
 module Events
   class TopicUpdated < Event
-    #after_create :notify_users!
+    # after_create :notify_users!
 
     def self.publish!(topic, user, meta)
       create!(kind: 'topic_updated',
@@ -9,7 +10,7 @@ module Events
               user: user,
               meta: meta)
     end
-    
+
     def notify_users!
       NotificationService.notify_followers(eventable, 'topic_updated', self)
     end

app/models/events/user_not_present_on_map.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 module Events
   class UserNotPresentOnMap < Event
     # after_create :notify_users!

app/models/events/user_present_on_map.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 module Events
   class UserPresentOnMap < Event
     # after_create :notify_users!

app/models/follow.rb

@@ -1,23 +1,21 @@
 # frozen_string_literal: true
-class Follow < ApplicationRecord
 
+class Follow < ApplicationRecord
   belongs_to :user
   belongs_to :followed, polymorphic: true
   has_one    :follow_reason, dependent: :destroy
-  
+
   validates :user, presence: true
   validates :followed, presence: true
   validates :user, uniqueness: { scope: :followed, message: 'This entity is already followed by this user' }
-  
+
   after_create :add_subsetting
 
-  scope :active, -> {
-    where(muted: false)
-  } 
+  scope :active, (-> { where(muted: false) })
 
   private
 
   def add_subsetting
-    follow_reason = FollowReason.create!(follow: self)
+    FollowReason.create!(follow: self)
   end
 end

app/models/follow_reason.rb

@@ -1,12 +1,13 @@
 # frozen_string_literal: true
+
 class FollowReason < ApplicationRecord
-  REASONS = %w(created commented contributed followed shared_on starred).freeze
+  REASONS = %w[created commented contributed followed shared_on starred].freeze
 
   belongs_to :follow
-  
+
   validates :follow, presence: true
-  
+
   def has_reason
     created || commented || contributed || followed || shared_on || starred
   end
-end
+end

app/models/in_metacode_set.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 class InMetacodeSet < ApplicationRecord
   belongs_to :metacode, class_name: 'Metacode', foreign_key: 'metacode_id'
   belongs_to :metacode_set, class_name: 'MetacodeSet', foreign_key: 'metacode_set_id'

app/models/map.rb

@@ -1,6 +1,7 @@
 # frozen_string_literal: true
+
 class Map < ApplicationRecord
-  ATTRS_TO_WATCH = %w(name desc permission).freeze
+  ATTRS_TO_WATCH = %w[name desc permission].freeze
 
   belongs_to :user
   belongs_to :source, class_name: :Map
@@ -15,7 +16,7 @@ class Map < ApplicationRecord
   has_many :messages, as: :resource, dependent: :destroy
   has_many :stars, dependent: :destroy
   has_many :follows, as: :followed, dependent: :destroy
-  has_many :followers, :through => :follows, source: :user
+  has_many :followers, through: :follows, source: :user
 
   has_many :access_requests, dependent: :destroy
   has_many :user_maps, dependent: :destroy
@@ -89,10 +90,10 @@ class Map < ApplicationRecord
 
   def as_json(_options = {})
     json = super(
-      methods: [:user_name, :user_image, :star_count, :topic_count, :synapse_count,
-                :contributor_count, :collaborator_ids, :screenshot_url],
-      except: [:screenshot_content_type, :screenshot_file_size, :screenshot_file_name,
-               :screenshot_updated_at]
+      methods: %i[user_name user_image star_count topic_count synapse_count
+                  contributor_count collaborator_ids screenshot_url],
+      except: %i[screenshot_content_type screenshot_file_size screenshot_file_name
+                 screenshot_updated_at]
     )
     json[:created_at_clean] = created_at_str
     json[:updated_at_clean] = updated_at_str
@@ -133,16 +134,16 @@ class Map < ApplicationRecord
     end
     removed.compact
   end
-  
+
   def update_deferring_topics_and_synapses
     Topic.where(defer_to_map_id: id).update(permission: permission)
     Synapse.where(defer_to_map_id: id).update(permission: permission)
   end
 
   protected
-  
+
   def after_created
-    FollowService.follow(self, self.user, 'created')
+    FollowService.follow(self, user, 'created')
     # notify users following the map creator
   end
 
@@ -150,13 +151,12 @@ class Map < ApplicationRecord
     return unless ATTRS_TO_WATCH.any? { |k| changed_attributes.key?(k) }
     ActionCable.server.broadcast 'map_' + id.to_s, type: 'mapUpdated'
   end
-  
+
   def after_updated_async
-    if ATTRS_TO_WATCH.any? { |k| changed_attributes.key?(k) }
-      FollowService.follow(self, updated_by, 'contributed')
-      # NotificationService.notify_followers(self, 'map_updated', changed_attributes)
-      # or better yet publish an event
-    end
+    return unless ATTRS_TO_WATCH.any? { |k| changed_attributes.key?(k) }
+    FollowService.follow(self, updated_by, 'contributed')
+    # NotificationService.notify_followers(self, 'map_updated', changed_attributes)
+    # or better yet publish an event
   end
   handle_asynchronously :after_updated_async
 

app/models/mapping.rb

@@ -1,7 +1,8 @@
 # frozen_string_literal: true
+
 class Mapping < ApplicationRecord
-  scope :topicmapping, -> { where(mappable_type: :Topic) }
-  scope :synapsemapping, -> { where(mappable_type: :Synapse) }
+  scope :topicmapping, (-> { where(mappable_type: :Topic) })
+  scope :synapsemapping, (-> { where(mappable_type: :Synapse) })
 
   belongs_to :mappable, polymorphic: true
   belongs_to :map, class_name: 'Map', foreign_key: 'map_id', touch: true
@@ -24,7 +25,7 @@ class Mapping < ApplicationRecord
   end
 
   def as_json(_options = {})
-    super(methods: [:user_name, :user_image])
+    super(methods: %i[user_name user_image])
   end
 
   def after_created
@@ -52,17 +53,17 @@ class Mapping < ApplicationRecord
   handle_asynchronously :after_created_async
 
   def after_updated
-    if (mappable_type == 'Topic') && (xloc_changed? || yloc_changed?)
-      meta = { 'x': xloc, 'y': yloc, 'mapping_id': id }
-      Events::TopicMovedOnMap.publish!(mappable, map, updated_by, meta)
-      ActionCable.server.broadcast 'map_' + map.id.to_s, type: 'topicMoved', id: mappable.id, mapping_id: id, x: xloc, y: yloc
-    end
+    return unless (mappable_type == 'Topic') && (xloc_changed? || yloc_changed?)
+    meta = { 'x': xloc, 'y': yloc, 'mapping_id': id }
+    Events::TopicMovedOnMap.publish!(mappable, map, updated_by, meta)
+    ActionCable.server.broadcast('map_' + map.id.to_s, type: 'topicMoved',
+                                                       id: mappable.id, mapping_id: id,
+                                                       x: xloc, y: yloc)
   end
 
   def after_updated_async
-    if (mappable_type == 'Topic') && (xloc_changed? || yloc_changed?)
-      FollowService.follow(map, updated_by, 'contributed')
-    end
+    return unless (mappable_type == 'Topic') && (xloc_changed? || yloc_changed?)
+    FollowService.follow(map, updated_by, 'contributed')
   end
   handle_asynchronously :after_updated_async
 

app/models/message.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 class Message < ApplicationRecord
   belongs_to :user
   belongs_to :resource, polymorphic: true
@@ -6,15 +7,14 @@ class Message < ApplicationRecord
   delegate :name, to: :user, prefix: true
 
   after_create :after_created
-  #after_create :after_created_async
-
+  # after_create :after_created_async
 
   def user_image
     user.image.url
   end
 
   def as_json(_options = {})
-    json = super(methods: [:user_name, :user_image])
+    json = super(methods: %i[user_name user_image])
     json
   end
 

app/models/metacode.rb

@@ -1,17 +1,16 @@
 # frozen_string_literal: true
+
 class Metacode < ApplicationRecord
   has_many :in_metacode_sets
   has_many :metacode_sets, through: :in_metacode_sets
   has_many :topics
 
   # This method associates the attribute ":aws_icon" with a file attachment
-  has_attached_file :aws_icon, styles: {
-    ninetysix: ['96x96#', :png]
-  },
+  has_attached_file :aws_icon, styles: { ninetysix: ['96x96#', :png] },
                                default_url: 'https://s3.amazonaws.com/metamaps-assets/metacodes/generics/96px/gen_wildcard.png'
 
   # Validate the attached icon is image/jpg, image/png, etc
-  validates_attachment_content_type :aws_icon, content_type: /\Aimage\/.*\Z/
+  validates_attachment_content_type :aws_icon, content_type: %r{\Aimage/.*\Z}
 
   validate :aws_xor_manual_icon
   validate :manual_icon_https
@@ -30,15 +29,13 @@ class Metacode < ApplicationRecord
   def as_json(options = {})
     default = super(options)
     default[:icon] = icon
-    default.except('aws_icon_file_name', 'aws_icon_content_type', 'aws_icon_file_size', 'aws_icon_updated_at', 'manual_icon')
+    default.except(
+      'aws_icon_file_name', 'aws_icon_content_type', 'aws_icon_file_size', 'aws_icon_updated_at',
+      'manual_icon'
+    )
   end
 
-  def hasSelected(user)
-    return true if user.settings.metacodes.include? id.to_s
-    false
-  end
-
-  def inMetacodeSet(metacode_set)
+  def in_metacode_set(metacode_set)
     return true if metacode_sets.include? metacode_set
     false
   end
@@ -55,10 +52,9 @@ class Metacode < ApplicationRecord
   end
 
   def manual_icon_https
-    if manual_icon.present?
-      unless manual_icon.starts_with? 'https'
-        errors.add(:base, 'Manual icon must begin with https')
-      end
+    return if manual_icon.blank?
+    unless manual_icon.starts_with? 'https'
+      errors.add(:base, 'Manual icon must begin with https')
     end
   end
 end

app/models/metacode_set.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 class MetacodeSet < ApplicationRecord
   belongs_to :user
   has_many :in_metacode_sets

app/models/permitted_params.rb

@@ -1,13 +1,18 @@
 # frozen_string_literal: true
-class PermittedParams < Struct.new(:params)
-  %w(map synapse topic mapping token).each do |kind|
+
+class PermittedParams
+  %w[map synapse topic mapping token].each do |kind|
     define_method(kind) do
       permitted_attributes = send("#{kind}_attributes")
-      params.require(kind).permit(*permitted_attributes)
+      @params.require(kind).permit(*permitted_attributes)
     end
     alias_method :"api_#{kind}", kind.to_sym
   end
 
+  def initialize(params)
+    @params = params
+  end
+
   alias read_attribute_for_serialization send
 
   def token_attributes
@@ -15,18 +20,18 @@ class PermittedParams < Struct.new(:params)
   end
 
   def map_attributes
-    [:name, :desc, :permission, :arranged]
+    %i[name desc permission arranged]
   end
 
   def synapse_attributes
-    [:desc, :category, :weight, :permission, :topic1_id, :topic2_id]
+    %i[desc category weight permission topic1_id topic2_id]
   end
 
   def topic_attributes
-    [:name, :desc, :link, :permission, :metacode_id]
+    %i[name desc link permission metacode_id]
   end
 
   def mapping_attributes
-    [:xloc, :yloc, :map_id, :mappable_type, :mappable_id]
+    %i[xloc yloc map_id mappable_type mappable_id]
   end
 end

app/models/star.rb

@@ -1,20 +1,21 @@
 # frozen_string_literal: true
-class Star < ActiveRecord::Base
+
+class Star < ApplicationRecord
   belongs_to :user
   belongs_to :map
   validates :map, uniqueness: { scope: :user, message: 'You have already starred this map' }
 
-  #after_create :after_created_async
-  #before_destroy :before_destroyed
-  
+  # after_create :after_created_async
+  # before_destroy :before_destroyed
+
   protected
-  
+
   def after_created_async
     FollowService.follow(map, user, 'starred')
     NotificationService.notify_followers(map, 'map_starred', self, 'created')
   end
   handle_asynchronously :after_created_async
-  
+
   def before_destroyed
     FollowService.remove_reason(map, user, 'starred')
   end

app/models/synapse.rb

@@ -1,6 +1,7 @@
 # frozen_string_literal: true
+
 class Synapse < ApplicationRecord
-  ATTRS_TO_WATCH = %w(desc category permission defer_to_map_id).freeze
+  ATTRS_TO_WATCH = %w[desc category permission defer_to_map_id].freeze
 
   belongs_to :user
   belongs_to :defer_to_map, class_name: 'Map', foreign_key: 'defer_to_map_id'
@@ -21,9 +22,9 @@ class Synapse < ApplicationRecord
 
   validates :category, inclusion: { in: ['from-to', 'both'], allow_nil: true }
 
-  scope :for_topic, ->(topic_id = nil) {
+  scope :for_topic, (lambda do |topic_id = nil|
     where(topic1_id: topic_id).or(where(topic2_id: topic_id))
-  }
+  end)
 
   before_create :set_perm_by_defer
   after_create :after_created_async
@@ -38,7 +39,7 @@ class Synapse < ApplicationRecord
 
   def collaborator_ids
     if defer_to_map
-      defer_to_map.editors.select { |mapper| mapper != user }.map(&:id)
+      defer_to_map.editors.reject { |mapper| mapper == user }.map(&:id)
     else
       []
     end
@@ -54,7 +55,7 @@ class Synapse < ApplicationRecord
   end
 
   def as_json(_options = {})
-    super(methods: [:user_name, :user_image, :collaborator_ids])
+    super(methods: %i[user_name user_image collaborator_ids])
   end
 
   def as_rdf
@@ -72,7 +73,7 @@ class Synapse < ApplicationRecord
   protected
 
   def set_perm_by_defer
-    permission = defer_to_map.permission if defer_to_map
+    defer_to_map&.permission
   end
 
   def after_created_async
@@ -82,21 +83,21 @@ class Synapse < ApplicationRecord
   handle_asynchronously :after_created_async
 
   def after_updated
-    if ATTRS_TO_WATCH.any? { |k| changed_attributes.key?(k) }
-      new = attributes.select { |k| ATTRS_TO_WATCH.include?(k) }
-      old = changed_attributes.select { |k| ATTRS_TO_WATCH.include?(k) }
-      meta = new.merge(old) # we are prioritizing the old values, keeping them
-      meta['changed'] = changed_attributes.keys.select { |k| ATTRS_TO_WATCH.include?(k) }
-      Events::SynapseUpdated.publish!(self, updated_by, meta)
-      maps.each do |map|
-        ActionCable.server.broadcast 'map_' + map.id.to_s, type: 'synapseUpdated', id: id
-      end
+    return unless ATTRS_TO_WATCH.any? { |k| changed_attributes.key?(k) }
+
+    new = attributes.select { |k| ATTRS_TO_WATCH.include?(k) }
+    old = changed_attributes.select { |k| ATTRS_TO_WATCH.include?(k) }
+    meta = new.merge(old) # we are prioritizing the old values, keeping them
+    meta['changed'] = changed_attributes.keys.select { |k| ATTRS_TO_WATCH.include?(k) }
+    Events::SynapseUpdated.publish!(self, updated_by, meta)
+    maps.each do |map|
+      ActionCable.server.broadcast 'map_' + map.id.to_s, type: 'synapseUpdated', id: id
     end
   end
 
   def before_destroyed
     # hard to know how to do this yet, because the synapse actually gets destroyed
-    #NotificationService.notify_followers(topic1, 'topic_disconnected', self)
-    #NotificationService.notify_followers(topic2, 'topic_disconnected', self)
+    # NotificationService.notify_followers(topic1, 'topic_disconnected', self)
+    # NotificationService.notify_followers(topic2, 'topic_disconnected', self)
   end
 end

app/models/token.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 class Token < ApplicationRecord
   belongs_to :user
 

app/models/topic.rb

@@ -1,6 +1,7 @@
 # frozen_string_literal: true
+
 class Topic < ApplicationRecord
-  ATTRS_TO_WATCH = %w(name desc link metacode_id permission defer_to_map_id).freeze
+  ATTRS_TO_WATCH = %w[name desc link metacode_id permission defer_to_map_id].freeze
   include TopicsHelper
   include Attachable
 
@@ -16,7 +17,7 @@ class Topic < ApplicationRecord
   has_many :mappings, as: :mappable, dependent: :destroy
   has_many :maps, through: :mappings
   has_many :follows, as: :followed, dependent: :destroy
-  has_many :followers, :through => :follows, source: :user
+  has_many :followers, through: :follows, source: :user
 
   belongs_to :metacode
 
@@ -25,7 +26,7 @@ class Topic < ApplicationRecord
   after_create :after_created_async
   after_update :after_updated
   after_update :after_updated_async
-  #before_destroy :before_destroyed
+  # before_destroy :before_destroyed
 
   validates :permission, presence: true
   validates :permission, inclusion: { in: Perm::ISSIONS.map(&:to_s) }
@@ -38,13 +39,13 @@ class Topic < ApplicationRecord
     topics1.or(topics2)
   end
 
-  scope :relatives, ->(topic_id = nil, user = nil) {
+  scope :relatives, (lambda do |topic_id = nil, user = nil|
     # should only see topics through *visible* synapses
     # e.g. Topic A (commons) -> synapse (private) -> Topic B (commons) must be filtered out
     topic_ids = Pundit.policy_scope(user, Synapse.where(topic1_id: topic_id)).pluck(:topic2_id)
     topic_ids += Pundit.policy_scope(user, Synapse.where(topic2_id: topic_id)).pluck(:topic1_id)
     where(id: topic_ids.uniq)
-  }
+  end)
 
   delegate :name, to: :user, prefix: true
 
@@ -64,13 +65,13 @@ class Topic < ApplicationRecord
     Pundit.policy_scope(user, maps).map(&:name)
   end
 
-  def inmapsLinks(user)
+  def inmaps_links(user)
     Pundit.policy_scope(user, maps).map(&:id)
   end
 
   def as_json(options = {})
-    super(methods: [:user_name, :user_image, :collaborator_ids])
-      .merge(inmaps: inmaps(options[:user]), inmapsLinks: inmapsLinks(options[:user]),
+    super(methods: %i[user_name user_image collaborator_ids])
+      .merge(inmaps: inmaps(options[:user]), inmapsLinks: inmaps_links(options[:user]),
              map_count: map_count(options[:user]), synapse_count: synapse_count(options[:user]))
   end
 
@@ -89,7 +90,7 @@ class Topic < ApplicationRecord
 
   def collaborator_ids
     if defer_to_map
-      defer_to_map.editors.select { |mapper| mapper != user }.map(&:id)
+      defer_to_map.editors.reject { |mapper| mapper == user }.map(&:id)
     else
       []
     end
@@ -126,14 +127,9 @@ class Topic < ApplicationRecord
         end
       end
     end
-    if output_format == 'array'
-      return output
-    elsif output_format == 'text'
-      return output.join('; ')
-    else
-      raise 'invalid argument to synapses_csv'
-    end
-    output
+    return output if output_format == 'array'
+    return output.join('; ') if output_format == 'text'
+    raise 'invalid argument to synapses_csv'
   end
 
   def topic_autocomplete_method
@@ -143,7 +139,7 @@ class Topic < ApplicationRecord
   protected
 
   def set_perm_by_defer
-    permission = defer_to_map.permission if defer_to_map
+    self.permission = defer_to_map.permission if defer_to_map
   end
 
   def create_metamap?
@@ -154,35 +150,35 @@ class Topic < ApplicationRecord
     self.link = Rails.application.routes.url_helpers
                      .map_url(host: ENV['MAILER_DEFAULT_URL'], id: @map.id)
   end
-  
+
   def after_created_async
-    FollowService.follow(self, self.user, 'created')
+    FollowService.follow(self, user, 'created')
     # notify users following the topic creator
   end
   handle_asynchronously :after_created_async
 
   def after_updated
-    if ATTRS_TO_WATCH.any? { |k| changed_attributes.key?(k) }
-      new = attributes.select { |k| ATTRS_TO_WATCH.include?(k) }
-      old = changed_attributes.select { |k| ATTRS_TO_WATCH.include?(k) }
-      meta = new.merge(old) # we are prioritizing the old values, keeping them
-      meta['changed'] = changed_attributes.keys.select { |k| ATTRS_TO_WATCH.include?(k) }
-      Events::TopicUpdated.publish!(self, updated_by, meta)
-      maps.each do |map|
-        ActionCable.server.broadcast 'map_' + map.id.to_s, type: 'topicUpdated', id: id
-      end
+    return unless ATTRS_TO_WATCH.any? { |k| changed_attributes.key?(k) }
+
+    new = attributes.select { |k| ATTRS_TO_WATCH.include?(k) }
+    old = changed_attributes.select { |k| ATTRS_TO_WATCH.include?(k) }
+    meta = new.merge(old) # we are prioritizing the old values, keeping them
+    meta['changed'] = changed_attributes.keys.select { |k| ATTRS_TO_WATCH.include?(k) }
+    Events::TopicUpdated.publish!(self, updated_by, meta)
+    maps.each do |map|
+      ActionCable.server.broadcast 'map_' + map.id.to_s, type: 'topicUpdated', id: id
     end
   end
-  
+
   def after_updated_async
-    if ATTRS_TO_WATCH.any? { |k| changed_attributes.key?(k) }
-      FollowService.follow(self, updated_by, 'contributed')
-    end
+    return unless ATTRS_TO_WATCH.any? { |k| changed_attributes.key?(k) }
+
+    FollowService.follow(self, updated_by, 'contributed')
   end
   handle_asynchronously :after_updated_async
 
   def before_destroyed
     # hard to know how to do this yet, because the topic actually gets destroyed
-    #NotificationService.notify_followers(self, 'topic_deleted', ?)
+    # NotificationService.notify_followers(self, 'topic_deleted', ?)
   end
 end

app/models/user.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 require 'open-uri'
 
 class User < ApplicationRecord
@@ -51,26 +52,24 @@ class User < ApplicationRecord
   validates_attachment_content_type :image, content_type: %r{\Aimage/.*\Z}
 
   # override default as_json
-  def as_json(_options = {})
+  def as_json(options = {})
     json = { id: id,
-      name: name,
-      image: image.url(:sixtyfour),
-      admin: admin }
-    if (_options[:follows])
+             name: name,
+             image: image.url(:sixtyfour),
+             admin: admin }
+    if options[:follows]
       json['follows'] = {
         topics: following.active.where(followed_type: 'Topic').to_a.map(&:followed_id),
         maps: following.active.where(followed_type: 'Map').to_a.map(&:followed_id)
       }
     end
-    if (_options[:follow_settings])
-      json['follow_topic_on_created'] = settings.follow_topic_on_created == "1"
-      json['follow_topic_on_contributed'] = settings.follow_topic_on_contributed == "1"
-      json['follow_map_on_created'] = settings.follow_map_on_created == "1"
-      json['follow_map_on_contributed'] = settings.follow_map_on_contributed == "1"
-    end
-    if (_options[:email])
-      json['email'] = email
+    if options[:follow_settings]
+      json['follow_topic_on_created'] = settings.follow_topic_on_created == '1'
+      json['follow_topic_on_contributed'] = settings.follow_topic_on_contributed == '1'
+      json['follow_map_on_created'] = settings.follow_map_on_created == '1'
+      json['follow_map_on_contributed'] = settings.follow_map_on_contributed == '1'
     end
+    json['email'] = email if options[:email]
     json
   end
 
@@ -107,10 +106,14 @@ class User < ApplicationRecord
   end
 
   def most_used_metacodes
-    topics.to_a.each_with_object(Hash.new(0)) do |topic, memo|
-      memo[topic.metacode_id] += 1
-      memo
-    end.to_a.sort { |a, b| b[1] <=> a[1] }.map { |i| i[0] }.slice(0, 5)
+    metacode_counts = topics.to_a.each_with_object(Hash.new(0)) do |topic, list_so_far|
+      list_so_far[topic.metacode_id] += 1
+      list_so_far
+    end
+    id_count_pairs = metacode_counts.to_a
+    id_count_pairs.sort! { |a, b| b[1] <=> a[1] }
+    metacode_ids = id_count_pairs.map { |i| i[0] }
+    metacode_ids.slice(0, 5)
   end
 
   # generate a random 8 letter/digit code that they can use to invite people
@@ -133,20 +136,20 @@ class User < ApplicationRecord
   end
 
   def has_map_open(map)
-    latestEvent = Event.where(map: map, user: self)
-                       .where(kind: ['user_present_on_map', 'user_not_present_on_map'])
-                       .order(:created_at)
-                       .last
-    latestEvent && latestEvent.kind == 'user_present_on_map'
+    latest_event = Event.where(map: map, user: self)
+                        .where(kind: %w[user_present_on_map user_not_present_on_map])
+                        .order(:created_at)
+                        .last
+    latest_event && latest_event.kind == 'user_present_on_map'
   end
 
   def has_map_with_synapse_open(synapse)
-    synapse.maps.any?{|map| has_map_open(map)}
+    synapse.maps.any? { |map| has_map_open(map) }
   end
 
   def settings
     self[:settings] = UserPreference.new if self[:settings].nil?
-    if not self[:settings].respond_to?(:follow_topic_on_created)
+    unless self[:settings].respond_to?(:follow_topic_on_created)
       self[:settings].initialize_follow_settings
     end
     self[:settings]

app/models/user_map.rb

@@ -1,9 +1,10 @@
 # frozen_string_literal: true
+
 class UserMap < ApplicationRecord
   belongs_to :map
   belongs_to :user
   belongs_to :access_request
-  
+
   after_create :after_created_async
   before_destroy :before_destroyed
 
@@ -12,20 +13,20 @@ class UserMap < ApplicationRecord
       Mailboxer::Receipt.where(notification: notification).update_all(is_read: true)
     end
   end
-  
+
   protected
-  
+
   def after_created_async
     FollowService.follow(map, user, 'shared_on')
     if access_request
-      NotificationService.access_approved(self.access_request)
+      NotificationService.access_approved(access_request)
     else
       NotificationService.invite_to_edit(self)
     end
     # NotificationService.notify_followers(map, 'map_collaborator_added', self, 'shared_on')
   end
   handle_asynchronously :after_created_async
-  
+
   def before_destroyed
     FollowService.remove_reason(map, user, 'shared_on')
   end

app/models/user_preference.rb

@@ -1,23 +1,28 @@
 # frozen_string_literal: true
+
 class UserPreference
   attr_accessor :metacodes, :metacode_focus, :follow_topic_on_created, :follow_topic_on_contributed,
                 :follow_map_on_created, :follow_map_on_contributed
 
   def initialize
-    array = []
-    %w(Action Aim Idea Question Note Wildcard Subject).each do |m|
+    @metacodes = init_metacodes.compact
+    @metacode_focus = @metacodes[0]
+    initialize_follow_settings
+  end
+
+  private
+
+  def init_metacodes
+    %w[Action Aim Idea Question Note Wildcard Subject].map do |m|
       begin
         metacode = Metacode.find_by(name: m)
-        array.push(metacode.id.to_s) if metacode
+        metacode.id.to_s if metacode
       rescue ActiveRecord::StatementInvalid
         if m == 'Action'
           Rails.logger.warn('TODO: remove this travis workaround in user_preference.rb')
         end
       end
-    end
-    @metacodes = array
-    @metacode_focus = array[0]
-    initialize_follow_settings
+    end.compact
   end
 
   def initialize_follow_settings

app/models/webhook.rb

@@ -1,10 +1,11 @@
 # frozen_string_literal: true
+
 class Webhook < ApplicationRecord
   belongs_to :hookable, polymorphic: true
 
   validates :uri, presence: true
   validates :hookable, presence: true
-  validates :kind, inclusion: { in: %w(slack) }
+  validates :kind, inclusion: { in: %w[slack] }
   validates :event_types, length: { minimum: 1 }
 
   def headers

app/models/webhooks/slack/base.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 Webhooks::Slack::Base = Struct.new(:webhook, :event) do
   include Routing
 

app/models/webhooks/slack/conversation_started_on_map.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 class Webhooks::Slack::ConversationStartedOnMap < Webhooks::Slack::Base
   def text
     "There is a live conversation starting on map *#{event.map.name}*. #{view_map_on_metamaps('Join in!')}"

app/models/webhooks/slack/synapse_added_to_map.rb

@@ -1,7 +1,10 @@
 # frozen_string_literal: true
+
 class Webhooks::Slack::SynapseAddedToMap < Webhooks::Slack::Base
   def text
     connector = eventable.desc.empty? ? '->' : eventable.desc
-    "\"*#{eventable.topic1.name}* #{connector} *#{eventable.topic2.name}*\" was added as a connection by *#{event.user.name}* to the map *#{view_map_on_metamaps}*"
+    "\"*#{eventable.topic1.name}* #{connector} *#{eventable.topic2.name}*\"" \
+      " was added as a connection by *#{event.user.name}*" \
+      " to the map *#{view_map_on_metamaps}*"
   end
 end

app/models/webhooks/slack/synapse_removed_from_map.rb

@@ -1,8 +1,13 @@
 # frozen_string_literal: true
+
 class Webhooks::Slack::SynapseRemovedFromMap < Webhooks::Slack::Base
   def text
     connector = eventable.desc.empty? ? '->' : eventable.desc
+
     # TODO: express correct directionality of arrows when desc is empty
-    "\"*#{eventable.topic1.name}* #{connector} *#{eventable.topic2.name}*\" was removed by *#{event.user.name}* as a connection from the map *#{view_map_on_metamaps}*"
+
+    "\"*#{eventable.topic1.name}* #{connector} *#{eventable.topic2.name}*\"" \
+      " was removed by *#{event.user.name}* as a connection" \
+      " from the map *#{view_map_on_metamaps}*"
   end
 end

app/models/webhooks/slack/topic_added_to_map.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 class Webhooks::Slack::TopicAddedToMap < Webhooks::Slack::Base
   def text
     "*#{eventable.name}* was added by *#{event.user.name}* to the map *#{view_map_on_metamaps}*"

app/models/webhooks/slack/topic_moved_on_map.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 class Webhooks::Slack::TopicMovedOnMap < Webhooks::Slack::Base
   def text
     "*#{eventable.name}* was moved by *#{event.user.name}* on the map *#{view_map_on_metamaps}*"

app/models/webhooks/slack/topic_removed_from_map.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 class Webhooks::Slack::TopicRemovedFromMap < Webhooks::Slack::Base
   def text
     "*#{eventable.name}* was removed by *#{event.user.name}* from the map *#{view_map_on_metamaps}*"

app/models/webhooks/slack/user_present_on_map.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 class Webhooks::Slack::UserPresentOnMap < Webhooks::Slack::Base
   def text
     "Mapper *#{event.user.name}* has joined the map *#{event.map.name}*. #{view_map_on_metamaps('Map with them')}"

app/policies/application_policy.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 class ApplicationPolicy
   attr_reader :user, :record
 

app/policies/explore_policy.rb

@@ -1,4 +1,5 @@
 # frozen_string_literal: true
+
 class ExplorePolicy < ApplicationPolicy
   def active?
     true