Merge pull request #656 from metamaps/feature/tech-debt

rubocop style updates

.rubocop.yml

@@ -6,9 +6,16 @@ AllCops:
     - 'bin/**/*'
     - 'vendor/**/*'
     - 'app/assets/javascripts/node_modules/**/*'
+    - 'Vagrantfile'
 
 Rails:
   Enabled: true
 
 Metrics/LineLength:
   Max: 100
+
+Metrics/AbcSize:
+  Max: 16
+
+Style/Documentation:
+  Enabled: false

Gemfile

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 source 'https://rubygems.org'
 ruby '2.3.0'
 

Rakefile

@@ -1,4 +1,5 @@
 #!/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.
 

Vagrantfile

@@ -31,7 +31,7 @@ sudo -u postgres psql -c "ALTER USER postgres WITH PASSWORD '3112';"
 
 SCRIPT
 
-VAGRANTFILE_API_VERSION = '2'.freeze
+VAGRANTFILE_API_VERSION = '2'
 
 Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
   config.vm.box = 'trusty64'

app/controllers/api/v1/deprecated_controller.rb

@@ -1,9 +1,12 @@
+# frozen_string_literal: true
 module Api
   module V1
     class DeprecatedController < ApplicationController
+      # rubocop:disable Style/MethodMissing
       def method_missing
-        render json: { error: "/api/v1 is deprecated! Please use /api/v2 instead." }
+        render json: { error: '/api/v1 is deprecated! Please use /api/v2 instead.' }
       end
+      # rubocop:enable Style/MethodMissing
     end
   end
 end

app/controllers/api/v1/mappings_controller.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module Api
   module V1
     class MappingsController < DeprecatedController

app/controllers/api/v1/maps_controller.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module Api
   module V1
     class MapsController < DeprecatedController

app/controllers/api/v1/synapses_controller.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module Api
   module V1
     class SynapsesController < DeprecatedController

app/controllers/api/v1/tokens_controller.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module Api
   module V1
     class TokensController < DeprecatedController

app/controllers/api/v1/topics_controller.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module Api
   module V1
     class TopicsController < DeprecatedController

app/controllers/api/v2/mappings_controller.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module Api
   module V2
     class MappingsController < RestfulController

app/controllers/api/v2/maps_controller.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module Api
   module V2
     class MapsController < RestfulController

app/controllers/api/v2/restful_controller.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module Api
   module V2
     class RestfulController < ActionController::Base
@@ -51,7 +52,8 @@ module Api
         "Api::V2::#{resource_name.camelize}Serializer".constantize
       end
 
-      def respond_with_resource(scope: default_scope, serializer: resource_serializer, root: serializer_root)
+      def respond_with_resource(scope: default_scope, serializer: resource_serializer,
+                                root: serializer_root)
         if resource.errors.empty?
           render json: resource, scope: scope, serializer: serializer, root: root
         else
@@ -59,8 +61,11 @@ module Api
         end
       end
 
-      def respond_with_collection(resources: collection, scope: default_scope, serializer: resource_serializer, root: serializer_root)
-        render json: resources, scope: scope, each_serializer: serializer, root: root, meta: pagination(resources), meta_key: :page
+      def respond_with_collection(resources: collection, scope: default_scope,
+                                  serializer: resource_serializer, root: serializer_root)
+        pagination_link_headers!(pagination(resources))
+        render json: resources, scope: scope, each_serializer: serializer, root: root,
+               meta: pagination(resources), meta_key: :page
       end
 
       def default_scope
@@ -94,33 +99,36 @@ module Api
       end
 
       def pagination(collection)
-        per = (params[:per] || 25).to_i
-        current_page = (params[:page] || 1).to_i
-        total_pages = (collection.total_count.to_f / per).ceil
-        prev_page = current_page > 1 ? current_page - 1 : 0
-        next_page = current_page < total_pages ? current_page + 1 : 0
+        return @pagination_data unless @pagination_data.nil?
 
+        current_page = (params[:page] || 1).to_i
+        per = (params[:per] || 25).to_i
+        total_pages = (collection.total_count.to_f / per).ceil
+        @pagination_data = {
+          current_page: current_page,
+          next_page: current_page < total_pages ? current_page + 1 : 0,
+          prev_page: current_page > 1 ? current_page - 1 : 0,
+          total_pages: total_pages,
+          total_count: collection.total_count,
+          per: per
+        }
+      end
+
+      def pagination_link_headers!(data)
         base_url = request.base_url + request.path
-        nxt = request.query_parameters.merge(page: next_page).map{|x| x.join('=')}.join('&')
-        prev = request.query_parameters.merge(page: prev_page).map{|x| x.join('=')}.join('&')
-        last = request.query_parameters.merge(page: total_pages).map{|x| x.join('=')}.join('&')
+        old_query = request.query_parameters
+        nxt = old_query.merge(page: data[:next_page]).map { |x| x.join('=') }.join('&')
+        prev = old_query.merge(page: data[:prev_page]).map { |x| x.join('=') }.join('&')
+        last = old_query.merge(page: data[:total_pages]).map { |x| x.join('=') }.join('&')
+
         response.headers['Link'] = [
           %(<#{base_url}?#{nxt}>; rel="next"),
           %(<#{base_url}?#{prev}>; rel="prev"),
           %(<#{base_url}?#{last}>; rel="last")
         ].join(',')
-        response.headers['X-Total-Pages'] = collection.total_pages.to_s
-        response.headers['X-Total-Count'] = collection.total_count.to_s
-        response.headers['X-Per-Page'] = per.to_s
-
-        {
-          current_page: current_page,
-          next_page: next_page,
-          prev_page: prev_page,
-          total_pages: total_pages,
-          total_count: collection.total_count,
-          per: per
-        }
+        response.headers['X-Total-Pages'] = data[:total_pages].to_s
+        response.headers['X-Total-Count'] = data[:total_count].to_s
+        response.headers['X-Per-Page'] = data[:per].to_s
       end
 
       def instantiate_collection
@@ -163,7 +171,7 @@ module Api
             builder = builder.order(sort => direction)
           end
         end
-        return builder
+        builder
       end
 
       def visible_records

app/controllers/api/v2/sessions_controller.rb

@@ -1,9 +1,10 @@
+# frozen_string_literal: true
 module Api
   module V2
     class SessionsController < ApplicationController
       def create
         @user = User.find_by(email: params[:email])
-        if @user && @user.valid_password(params[:password])
+        if @user&.valid_password(params[:password])
           sign_in(@user)
           render json: @user
         else

app/controllers/api/v2/synapses_controller.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module Api
   module V2
     class SynapsesController < RestfulController

app/controllers/api/v2/tokens_controller.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module Api
   module V2
     class TokensController < RestfulController

app/controllers/api/v2/topics_controller.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module Api
   module V2
     class TopicsController < RestfulController

app/controllers/application_controller.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class ApplicationController < ActionController::Base
   include ApplicationHelper
   include Pundit
@@ -5,7 +6,7 @@ class ApplicationController < ActionController::Base
   rescue_from Pundit::NotAuthorizedError, with: :handle_unauthorized
   protect_from_forgery(with: :exception)
 
-  before_action :get_invite_link
+  before_action :invite_link
   after_action :allow_embedding
 
   def default_serializer_options
@@ -41,29 +42,26 @@ class ApplicationController < ActionController::Base
 
   private
 
-  def get_invite_link
+  def invite_link
     @invite_link = "#{request.base_url}/join" + (current_user ? "?code=#{current_user.code}" : '')
   end
 
   def require_no_user
-    if authenticated?
-      redirect_to edit_user_path(user), notice: 'You must be logged out.'
-      return false
-    end
+    return true unless authenticated?
+    redirect_to edit_user_path(user), notice: 'You must be logged out.'
+    return false
   end
 
   def require_user
-    unless authenticated?
-      redirect_to new_user_session_path, notice: 'You must be logged in.'
-      return false
-    end
+    return true if authenticated?
+    redirect_to new_user_session_path, notice: 'You must be logged in.'
+    return false
   end
 
   def require_admin
-    unless authenticated? && admin?
-      redirect_to root_url, notice: 'You need to be an admin for that.'
-      return false
-    end
+    return true if authenticated? && admin?
+    redirect_to root_url, notice: 'You need to be an admin for that.'
+    false
   end
 
   def user

app/controllers/main_controller.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class MainController < ApplicationController
   include TopicsHelper
   include MapsHelper
@@ -12,13 +13,13 @@ class MainController < ApplicationController
   def home
     @maps = policy_scope(Map).order('updated_at DESC').page(1).per(20)
     respond_to do |format|
-        format.html { 
-          if !authenticated?
-            render 'main/home'
-          else 
-            render 'maps/activemaps'
-          end
-        }
+      format.html do
+        if !authenticated?
+          render 'main/home'
+        else
+          render 'maps/activemaps'
+        end
+      end
     end
   end
 
@@ -163,8 +164,8 @@ class MainController < ApplicationController
       @synapses = []
     end
 
-    #limit to 5 results
-    @synapses = @synapses.to_a.slice(0,5)
+    # limit to 5 results
+    @synapses = @synapses.to_a.slice(0, 5)
 
     render json: autocomplete_synapse_array_json(@synapses)
   end

app/controllers/mappings_controller.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class MappingsController < ApplicationController
   before_action :require_user, only: [:create, :update, :destroy]
   after_action :verify_authorized, except: :index

app/controllers/maps_controller.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class MapsController < ApplicationController
   before_action :require_user, only: [:create, :update, :access, :star, :unstar, :screenshot, :events, :destroy]
   after_action :verify_authorized, except: [:activemaps, :featuredmaps, :mymaps, :sharedmaps, :starredmaps, :usermaps]
@@ -107,14 +108,14 @@ class MapsController < ApplicationController
 
   # GET maps/new
   def new
-    @map = Map.new(name: "Untitled Map", permission: "public", arranged: true)
+    @map = Map.new(name: 'Untitled Map', permission: 'public', arranged: true)
     authorize @map
 
     respond_to do |format|
       format.html do
         @map.user = current_user
         @map.save
-        redirect_to(map_path(@map) + '?new') 
+        redirect_to(map_path(@map) + '?new')
       end
     end
   end
@@ -305,9 +306,7 @@ class MapsController < ApplicationController
     @map = Map.find(params[:id])
     authorize @map
     star = Star.find_by_map_id_and_user_id(@map.id, current_user.id)
-    if not star
-      star = Star.create(map_id: @map.id, user_id: current_user.id)
-    end
+    star = Star.create(map_id: @map.id, user_id: current_user.id) unless star
 
     respond_to do |format|
       format.json do
@@ -321,9 +320,7 @@ class MapsController < ApplicationController
     @map = Map.find(params[:id])
     authorize @map
     star = Star.find_by_map_id_and_user_id(@map.id, current_user.id)
-    if star
-      star.delete
-    end
+    star&.delete
 
     respond_to do |format|
       format.json do

app/controllers/messages_controller.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class MessagesController < ApplicationController
   before_action :require_user, except: [:show]
   after_action :verify_authorized

app/controllers/metacode_sets_controller.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class MetacodeSetsController < ApplicationController
   before_action :require_admin
 

app/controllers/metacodes_controller.rb

@@ -1,5 +1,7 @@
+# frozen_string_literal: true
 class MetacodesController < ApplicationController
   before_action :require_admin, except: [:index, :show]
+  before_action :set_metacode, only: [:edit, :update]
 
   # GET /metacodes
   # GET /metacodes.json
@@ -8,10 +10,7 @@ class MetacodesController < ApplicationController
 
     respond_to do |format|
       format.html do
-        unless authenticated? && user.admin
-          redirect_to root_url, notice: 'You need to be an admin for that.'
-          return false
-        end
+        return unless require_admin
         render :index
       end
       format.json { render json: @metacodes }
@@ -23,7 +22,7 @@ class MetacodesController < ApplicationController
   # GET /metacodes/action.json
   def show
     @metacode = Metacode.where('DOWNCASE(name) = ?', downcase(params[:name])).first if params[:name]
-    @metacode = Metacode.find(params[:id]) unless @metacode
+    set_metacode unless @metacode
 
     respond_to do |format|
       format.json { render json: @metacode }
@@ -36,14 +35,13 @@ class MetacodesController < ApplicationController
     @metacode = Metacode.new
 
     respond_to do |format|
-      format.html # new.html.erb
+      format.html
       format.json { render json: @metacode }
     end
   end
 
   # GET /metacodes/1/edit
   def edit
-    @metacode = Metacode.find(params[:id])
   end
 
   # POST /metacodes
@@ -65,8 +63,6 @@ class MetacodesController < ApplicationController
   # PUT /metacodes/1
   # PUT /metacodes/1.json
   def update
-    @metacode = Metacode.find(params[:id])
-
     respond_to do |format|
       if @metacode.update(metacode_params)
         format.html { redirect_to metacodes_url, notice: 'Metacode was successfully updated.' }
@@ -84,4 +80,8 @@ class MetacodesController < ApplicationController
   def metacode_params
     params.require(:metacode).permit(:id, :name, :aws_icon, :manual_icon, :color)
   end
+
+  def set_metacode
+    @metacode = Metacode.find(params[:id])
+  end
 end

app/controllers/synapses_controller.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class SynapsesController < ApplicationController
   include TopicsHelper
 

app/controllers/topics_controller.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class TopicsController < ApplicationController
   include TopicsHelper
 

app/controllers/users/passwords_controller.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class Users::PasswordsController < Devise::PasswordsController
   protected
 
@@ -5,7 +6,7 @@ class Users::PasswordsController < Devise::PasswordsController
     signed_in_root_path(resource)
   end
 
-  def after_sending_reset_password_instructions_path_for(resource_name)
+  def after_sending_reset_password_instructions_path_for(_resource_name)
     new_user_session_path if is_navigational_format?
   end
 end

app/controllers/users/registrations_controller.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class Users::RegistrationsController < Devise::RegistrationsController
   before_action :configure_sign_up_params, only: [:create]
   before_action :configure_account_update_params, only: [:update]

app/controllers/users_controller.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class UsersController < ApplicationController
   before_action :require_user, only: [:edit, :update, :updatemetacodes]
 

app/helpers/application_helper.rb

@@ -1,13 +1,14 @@
+# frozen_string_literal: true
 module ApplicationHelper
-  def get_metacodeset
-    @m = current_user.settings.metacodes
-    set = @m[0].include?('metacodeset') ? MetacodeSet.find(@m[0].sub('metacodeset-', '').to_i) : false
-    set
+  def metacodeset
+    metacodes = current_user.settings.metacodes
+    return false unless metacodes[0].include?('metacodeset')
+    MetacodeSet.find(metacodes[0].sub('metacodeset-', '').to_i)
   end
 
   def user_metacodes
     @m = current_user.settings.metacodes
-    set = get_metacodeset
+    set = metacodeset
     @metacodes = if set
                    set.metacodes.to_a
                  else
@@ -16,7 +17,7 @@ module ApplicationHelper
     @metacodes.sort! { |m1, m2| m2.name.downcase <=> m1.name.downcase }.rotate!(-1)
   end
 
-  def determine_invite_link
+  def invite_link
     "#{request.base_url}/join" + (current_user ? "?code=#{current_user.code}" : '')
   end
 end

app/helpers/content_helper.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module ContentHelper
   def resource_name
     :user

app/helpers/devise_helper.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module DeviseHelper
   def devise_error_messages!
     resource.errors.to_a[0]

app/helpers/in_metacode_sets_helper.rb

@@ -1,2 +1,3 @@
+# frozen_string_literal: true
 module InMetacodeSetsHelper
 end

app/helpers/main_helper.rb

@@ -1,2 +1,3 @@
+# frozen_string_literal: true
 module MainHelper
 end

app/helpers/mapping_helper.rb

@@ -1,2 +1,3 @@
+# frozen_string_literal: true
 module MappingHelper
 end

app/helpers/maps_helper.rb

@@ -1,34 +1,42 @@
+# frozen_string_literal: true
 module MapsHelper
-  ## this one is for building our custom JSON autocomplete format for typeahead
+  # JSON autocomplete format for typeahead
   def autocomplete_map_array_json(maps)
-    temp = []
-    maps.each do |m|
-      map = {}
-      map['id'] = m.id
-      map['label'] = m.name
-      map['value'] = m.name
-      map['description'] = m.desc.try(:truncate, 30)
-      map['permission'] = m.permission
-      map['topicCount'] = m.topics.count
-      map['synapseCount'] = m.synapses.count
-      map['contributorCount'] = m.contributors.count
-      map['rtype'] = 'map'
-
-      contributorTip = ''
-      firstContributorImage = 'https://s3.amazonaws.com/metamaps-assets/site/user.png'
-      if m.contributors.count > 0
-        firstContributorImage = m.contributors[0].image.url(:thirtytwo)
-        m.contributors.each_with_index do |c, _index|
-          userImage = c.image.url(:thirtytwo)
-          name = c.name
-          contributorTip += '<li> <img class="tipUserImage" width="25" height="25" src=' + userImage + ' />' + '<span>' + name + '</span> </li>'
-        end
-      end
-      map['contributorTip'] = contributorTip
-      map['mapContributorImage'] = firstContributorImage
-
-      temp.push map
+    maps.map do |m|
+      {
+        id: m.id,
+        label: m.name,
+        value: m.name,
+        description: m.desc.try(:truncate, 30),
+        permission: m.permission,
+        topicCount: m.topics.count,
+        synapseCount: m.synapses.count,
+        contributorCount: m.contributors.count,
+        rtype: 'map',
+        contributorTip: contributor_tip(map),
+        mapContributorImage: first_contributor_image(map)
+      }
     end
-    temp
+  end
+
+  def first_contributor_image(map)
+    if map.contributors.count.positive?
+      return map.contributors[0].image.url(:thirtytwo)
+    end
+    'https://s3.amazonaws.com/metamaps-assets/site/user.png'
+  end
+
+  def contributor_tip(map)
+    output = ''
+    if map.contributors.count.positive?
+      map.contributors.each_with_index do |contributor, _index|
+        user_image = contributor.image.url(:thirtytwo)
+        output += '<li>'
+        output += %(<img class="tipUserImage" width="25" height="25" src="#{user_image}" />)
+        output += "<span>#{contributor.name}</span>"
+        output += '</li>'
+      end
+    end
+    output
   end
 end

app/helpers/metacode_sets_helper.rb

@@ -1,2 +1,3 @@
+# frozen_string_literal: true
 module MetacodeSetsHelper
 end

app/helpers/metacodes_helper.rb

@@ -1,2 +1,3 @@
+# frozen_string_literal: true
 module MetacodesHelper
 end

app/helpers/synapses_helper.rb

@@ -1,33 +1,25 @@
+# frozen_string_literal: true
 module SynapsesHelper
   ## this one is for building our custom JSON autocomplete format for typeahead
   def autocomplete_synapse_generic_json(unique)
-    temp = []
-    unique.each do |s|
-      synapse = {}
-      synapse['label'] = s.desc
-      synapse['value'] = s.desc
-
-      temp.push synapse
+    unique.map do |s|
+      { label: s.desc, value: s.desc }
     end
-    temp
   end
 
   ## this one is for building our custom JSON autocomplete format for typeahead
   def autocomplete_synapse_array_json(synapses)
-    temp = []
-    synapses.each do |s|
-      synapse = {}
-      synapse['id'] = s.id
-      synapse['label'] = s.desc.nil? || s.desc == '' ? '(no description)' : s.desc
-      synapse['value'] = s.desc
-      synapse['permission'] = s.permission
-      synapse['mapCount'] = s.maps.count
-      synapse['originator'] = s.user.name
-      synapse['originatorImage'] = s.user.image.url(:thirtytwo)
-      synapse['rtype'] = 'synapse'
-
-      temp.push synapse
+    synapses.map do |s|
+      {
+        id: s.id,
+        label: s.desc.blank? ? '(no description)' : s.desc,
+        value: s.desc,
+        permission: s.permission,
+        mapCount: s.maps.count,
+        originator: s.user.name,
+        originatorImage: s.user.image.url(:thirtytwo),
+        rtype: 'synapse'
+      }
     end
-    temp
   end
 end

app/helpers/topics_helper.rb

@@ -1,56 +1,39 @@
+# frozen_string_literal: true
 module TopicsHelper
   ## this one is for building our custom JSON autocomplete format for typeahead
   def autocomplete_array_json(topics)
-    temp = []
-    topics.each do |t|
-      topic = {}
-      topic['id'] = t.id
-      topic['label'] = t.name
-      topic['value'] = t.name
-      topic['description'] = t.desc ? t.desc.truncate(70) : '' # make this return matched results
-      topic['type'] = t.metacode.name
-      topic['typeImageURL'] = t.metacode.icon
-      topic['permission'] = t.permission
-      topic['mapCount'] = t.maps.count
-      topic['synapseCount'] = t.synapses.count
-      topic['originator'] = t.user.name
-      topic['originatorImage'] = t.user.image.url(:thirtytwo)
-      topic['rtype'] = 'topic'
-      topic['inmaps'] = t.inmaps
-      topic['inmapsLinks'] = t.inmapsLinks
-
-      temp.push topic
+    topics.map do |t|
+      {
+        id: t.id,
+        label: t.name,
+        value: t.name,
+        description: t.desc ? t.desc&.truncate(70) : '', # make this return matched results
+        type: t.metacode.name,
+        typeImageURL: t.metacode.icon,
+        permission: t.permission,
+        mapCount: t.maps.count,
+        synapseCount: t.synapses.count,
+        originator: t.user.name,
+        originatorImage: t.user.image.url(:thirtytwo),
+        rtype: :topic,
+        inmaps: t.inmaps,
+        inmapsLinks: t.inmapsLinks
+      }
     end
-    temp
   end
 
-  # find all nodes in any given nodes network
+  # recursively find all nodes in any given nodes network
   def network(node, array, count)
-    # recurse starting with a node to find all connected nodes and return an array of topics that constitutes the starting nodes network
-
-    # if the array of nodes is empty initialize it
     array = [] if array.nil?
-
-    # add the node to the array
     array.push(node)
-
-    return array if count == 0
-
-    count -= 1
+    return array if count.zero?
 
     # check if each relative is already in the array and if not, call the network function again
-    if !node.relatives.empty?
-      if (node.relatives - array).empty?
-        return array
-      else
-        (node.relatives - array).each do |relative|
-          array = (array | network(relative, array, count))
-        end
-        return array
-      end
-
-    elsif node.relatives.empty?
-      return array
+    remaining_relatives = node.relatives.to_a - array
+    remaining_relatives.each do |relative|
+      array = (array | network(relative, array, count - 1))
     end
+
+    array
   end
 end

app/helpers/users_helper.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module UsersHelper
   # build custom json autocomplete for typeahead
   def autocomplete_user_array_json(users)

app/mailers/application_mailer.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class ApplicationMailer < ActionMailer::Base
   default from: 'team@metamaps.cc'
   layout 'mailer'

app/mailers/map_mailer.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class MapMailer < ApplicationMailer
   default from: 'team@metamaps.cc'
 

app/models/application_record.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class ApplicationRecord < ActiveRecord::Base
   self.abstract_class = true
 end

app/models/concerns/routing.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module Routing
   extend ActiveSupport::Concern
   include Rails.application.routes.url_helpers

app/models/event.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class Event < ApplicationRecord
   KINDS = %w(user_present_on_map conversation_started_on_map topic_added_to_map synapse_added_to_map).freeze
 

app/models/events/conversation_started_on_map.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class Events::ConversationStartedOnMap < Event
   # after_create :notify_users!
 

app/models/events/new_mapping.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class Events::NewMapping < Event
   # after_create :notify_users!
 

app/models/events/user_present_on_map.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class Events::UserPresentOnMap < Event
   # after_create :notify_users!
 

app/models/in_metacode_set.rb

@@ -1,3 +1,4 @@
+# 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

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class Map < ApplicationRecord
   belongs_to :user
 
@@ -19,7 +20,7 @@ class Map < ApplicationRecord
     thumb: ['188x126#', :png]
     #:full => ['940x630#', :png]
   },
-  default_url: 'https://s3.amazonaws.com/metamaps-assets/site/missing-map-white.png'
+                                 default_url: 'https://s3.amazonaws.com/metamaps-assets/site/missing-map-white.png'
 
   validates :name, presence: true
   validates :arranged, inclusion: { in: [true, false] }

app/models/mapping.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class Mapping < ApplicationRecord
   scope :topicmapping, -> { where(mappable_type: :Topic) }
   scope :synapsemapping, -> { where(mappable_type: :Synapse) }

app/models/message.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class Message < ApplicationRecord
   belongs_to :user
   belongs_to :resource, polymorphic: true

app/models/metacode.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class Metacode < ApplicationRecord
   has_many :in_metacode_sets
   has_many :metacode_sets, through: :in_metacode_sets

app/models/metacode_set.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class MetacodeSet < ApplicationRecord
   belongs_to :user
   has_many :in_metacode_sets

app/models/permitted_params.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class PermittedParams < Struct.new(:params)
   %w(map synapse topic mapping token).each do |kind|
     define_method(kind) do

app/models/star.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class Star < ActiveRecord::Base
   belongs_to :user
   belongs_to :map

app/models/synapse.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class Synapse < ApplicationRecord
   belongs_to :user
   belongs_to :defer_to_map, class_name: 'Map', foreign_key: 'defer_to_map_id'
@@ -21,17 +22,12 @@ class Synapse < ApplicationRecord
     where('node1_id = ? OR node2_id = ?', topic_id, topic_id)
   }
 
-  # :nocov:
   delegate :name, to: :user, prefix: true
-  # :nocov:
 
-  # :nocov:
   def user_image
     user.image.url
   end
-  # :nocov:
 
-  # :nocov:
   def collaborator_ids
     if defer_to_map
       defer_to_map.editors.select { |mapper| mapper != user }.map(&:id)
@@ -39,21 +35,12 @@ class Synapse < ApplicationRecord
       []
     end
   end
-  # :nocov:
 
-  # :nocov:
   def calculated_permission
-    if defer_to_map
-      defer_to_map.permission
-    else
-      permission
-    end
+    defer_to_map&.permission || permission
   end
-  # :nocov:
 
-  # :nocov:
   def as_json(_options = {})
     super(methods: [:user_name, :user_image, :calculated_permission, :collaborator_ids])
   end
-  # :nocov:
 end

app/models/token.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class Token < ApplicationRecord
   belongs_to :user
 

app/models/topic.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class Topic < ApplicationRecord
   include TopicsHelper
 
@@ -73,11 +74,7 @@ class Topic < ApplicationRecord
   end
 
   def calculated_permission
-    if defer_to_map
-      defer_to_map.permission
-    else
-      permission
-    end
+    defer_to_map&.permission || permission
   end
 
   def as_json(_options = {})

app/models/user.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'open-uri'
 
 class User < ApplicationRecord
@@ -41,7 +42,7 @@ class User < ApplicationRecord
                             default_url: 'https://s3.amazonaws.com/metamaps-assets/site/user.png'
 
   # Validate the attached image is image/jpg, image/png, etc
-  validates_attachment_content_type :image, content_type: %r(\Aimage/.*\Z)
+  validates_attachment_content_type :image, content_type: %r{\Aimage/.*\Z}
 
   # override default as_json
   def as_json(_options = {})
@@ -79,8 +80,8 @@ class User < ApplicationRecord
     end
   end
 
-  def starred_map?(map) 
-    return self.stars.where(map_id: map.id).exists?
+  def starred_map?(map)
+    stars.where(map_id: map.id).exists?
   end
 
   def settings

app/models/user_map.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class UserMap < ApplicationRecord
   belongs_to :map
   belongs_to :user

app/models/user_preference.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class UserPreference
   attr_accessor :metacodes
 
@@ -9,7 +10,7 @@ class UserPreference
         array.push(metacode.id.to_s) if metacode
       rescue ActiveRecord::StatementInvalid
         if m == 'Action'
-          Rails.logger.warn("TODO: remove this travis workaround in user_preference.rb")
+          Rails.logger.warn('TODO: remove this travis workaround in user_preference.rb')
         end
       end
     end

app/models/webhook.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class Webhook < ApplicationRecord
   belongs_to :hookable, polymorphic: true
 

app/models/webhooks/slack/base.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 Webhooks::Slack::Base = Struct.new(:event) do
   include Routing
 

app/models/webhooks/slack/conversation_started_on_map.rb

@@ -1,3 +1,4 @@
+# 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

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class Webhooks::Slack::SynapseAddedToMap < Webhooks::Slack::Base
   def text
     "\"*#{eventable.mappable.topic1.name}* #{eventable.mappable.desc || '->'} *#{eventable.mappable.topic2.name}*\" was added as a connection to the map *#{view_map_on_metamaps}*"

app/models/webhooks/slack/topic_added_to_map.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class Webhooks::Slack::TopicAddedToMap < Webhooks::Slack::Base
   def text
     "New #{eventable.mappable.metacode.name} topic *#{eventable.mappable.name}* was added to the map *#{view_map_on_metamaps}*"

app/models/webhooks/slack/user_present_on_map.rb

@@ -1,3 +1,4 @@
+# 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

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class ApplicationPolicy
   attr_reader :user, :record
 
@@ -39,7 +40,7 @@ class ApplicationPolicy
   # explicitly say they want to (E.g. seeing/editing/deleting private
   # maps - they should be able to, but not by accident)
   def admin_override
-    user && user.admin
+    user&.admin
   end
 
   def scope

app/policies/main_policy.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class MainPolicy < ApplicationPolicy
   def initialize(user, _record)
     @user = user

app/policies/map_policy.rb

@@ -1,14 +1,13 @@
+# frozen_string_literal: true
 class MapPolicy < ApplicationPolicy
   class Scope < Scope
     def resolve
       visible = %w(public commons)
-      permission = 'maps.permission IN (?)'
-      if user
-        shared_maps = user.shared_maps.map(&:id)
-        scope.where(permission + ' OR maps.id IN (?) OR maps.user_id = ?', visible, shared_maps, user.id)
-      else
-        scope.where(permission, visible)
-      end
+      return scope.where(permission: visible) unless user
+
+      scope.where(permission: visible)
+           .or(scope.where(id: user.shared_maps.map(&:id)))
+           .or(scope.where(user_id: user.id))
     end
   end
 
@@ -17,7 +16,9 @@ class MapPolicy < ApplicationPolicy
   end
 
   def show?
-    record.permission == 'commons' || record.permission == 'public' || record.collaborators.include?(user) || record.user == user
+    record.permission.in?(['commons', 'public']) ||
+      record.collaborators.include?(user) ||
+      record.user == user
   end
 
   def create?
@@ -25,7 +26,10 @@ class MapPolicy < ApplicationPolicy
   end
 
   def update?
-    user.present? && (record.permission == 'commons' || record.collaborators.include?(user) || record.user == user)
+    return false unless user.present?
+    record.permission == 'commons' ||
+      record.collaborators.include?(user) ||
+      record.user == user
   end
 
   def destroy?
@@ -33,7 +37,7 @@ class MapPolicy < ApplicationPolicy
   end
 
   def access?
-    # note that this is to edit access
+    # note that this is to edit who can access the map
     user.present? && record.user == user
   end
 

app/policies/mapping_policy.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class MappingPolicy < ApplicationPolicy
   class Scope < Scope
     def resolve

app/policies/message_policy.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class MessagePolicy < ApplicationPolicy
   class Scope < Scope
     def resolve

app/policies/synapse_policy.rb

@@ -1,13 +1,14 @@
+# frozen_string_literal: true
 class SynapsePolicy < ApplicationPolicy
   class Scope < Scope
     def resolve
       visible = %w(public commons)
-      permission = 'synapses.permission IN (?)'
-      if user
-        scope.where(permission + ' OR synapses.defer_to_map_id IN (?) OR synapses.user_id = ?', visible, user.shared_maps.map(&:id), user.id)
-      else
-        scope.where(permission, visible)
-      end
+
+      return scope.where(permission: visible) unless user
+
+      scope.where(permission: visible)
+           .or(scope.where(defer_to_map_id: user.shared_maps.map(&:id)))
+           .or(scope.where(user_id: user.id))
     end
   end
 

app/policies/token_policy.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class TokenPolicy < ApplicationPolicy
   class Scope < Scope
     def resolve

app/policies/topic_policy.rb

@@ -1,13 +1,13 @@
+# frozen_string_literal: true
 class TopicPolicy < ApplicationPolicy
   class Scope < Scope
     def resolve
       visible = %w(public commons)
-      permission = 'topics.permission IN (?)'
-      if user
-        scope.where(permission + ' OR topics.defer_to_map_id IN (?) OR topics.user_id = ?', visible, user.shared_maps.map(&:id), user.id)
-      else
-        scope.where(permission, visible)
-      end
+      return scope.where(permission: visible) unless user
+
+      scope.where(permission: visible)
+           .or(scope.where(defer_to_map_id: user.shared_maps.map(&:id)))
+           .or(scope.where(user_id: user.id))
     end
   end
 
@@ -23,14 +23,13 @@ class TopicPolicy < ApplicationPolicy
     if record.defer_to_map.present?
       map_policy.show?
     else
-      record.permission == 'commons' || record.permission == 'public' || record.user == user
+      record.permission.in?(['commons', 'public']) || record.user == user
     end
   end
 
   def update?
-    if !user.present?
-      false
-    elsif record.defer_to_map.present?
+    return false unless user.present?
+    if record.defer_to_map.present?
       map_policy.update?
     else
       record.permission == 'commons' || record.user == user

app/serializers/api/v2/application_serializer.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module Api
   module V2
     class ApplicationSerializer < ActiveModel::Serializer
@@ -6,21 +7,40 @@ module Api
       end
 
       def embeds
+        # subclasses can override self.embeddable, and then it will whitelist
+        # scope[:embeds] based on the contents. That way scope[:embeds] can just pull
+        # from params and the whitelisting happens here
         @embeds ||= (scope[:embeds] || []).select { |e| self.class.embeddable.keys.include?(e) }
       end
 
+      # self.embeddable might look like this:
+      #   topic1: { attr: :node1, serializer: TopicSerializer }
+      #   topic2: { attr: :node2, serializer: TopicSerializer }
+      #   contributors: { serializer: UserSerializer}
+      # This method will remove the :attr key if the underlying attribute name
+      # is different than the name provided in the final json output. All other keys
+      # in the hash will be passed to the ActiveModel::Serializer `attribute` method
+      # directly (e.g. serializer in the examples will be passed).
+      #
+      # This setup means if you passed this self.embeddable config and sent no
+      # ?embed= query param with your API request, you would get the regular attributes
+      # plus topic1_id, topic2_id, and contributor_ids. If you pass
+      # ?embed=topic1,topic2,contributors, then instead of two ids and an array of ids,
+      # you would get two serialized topics and an array of serialized users
       def self.embed_dat
         embeddable.each_pair do |key, opts|
           attr = opts.delete(:attr) || key
           if attr.to_s.pluralize == attr.to_s
-            attribute "#{attr.to_s.singularize}_ids".to_sym, opts.merge(unless: -> { embeds.include?(key) }) do
+            attribute("#{attr.to_s.singularize}_ids".to_sym,
+                      opts.merge(unless: -> { embeds.include?(key) })) do
               object.send(attr).map(&:id)
             end
-            has_many attr, opts.merge(if: -> { embeds.include?(key) })
+            has_many(attr, opts.merge(if: -> { embeds.include?(key) }))
           else
             id_opts = opts.merge(key: "#{key}_id")
-            attribute "#{attr}_id".to_sym, id_opts.merge(unless: -> { embeds.include?(key) })
-            attribute key, opts.merge(if: -> { embeds.include?(key) })
+            attribute("#{attr}_id".to_sym,
+                      id_opts.merge(unless: -> { embeds.include?(key) }))
+            attribute(key, opts.merge(if: -> { embeds.include?(key) }))
           end
         end
       end

app/serializers/api/v2/event_serializer.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module Api
   module V2
     class EventSerializer < ApplicationSerializer

app/serializers/api/v2/map_serializer.rb

@@ -1,13 +1,14 @@
+# frozen_string_literal: true
 module Api
   module V2
     class MapSerializer < ApplicationSerializer
       attributes :id,
-        :name,
-        :desc,
-        :permission,
-        :screenshot,
-        :created_at,
-        :updated_at
+                 :name,
+                 :desc,
+                 :permission,
+                 :screenshot,
+                 :created_at,
+                 :updated_at
 
       def self.embeddable
         {
@@ -20,7 +21,7 @@ module Api
         }
       end
 
-      self.class_eval do
+      class_eval do
         embed_dat
       end
     end

app/serializers/api/v2/mapping_serializer.rb

@@ -1,11 +1,12 @@
+# frozen_string_literal: true
 module Api
   module V2
     class MappingSerializer < ApplicationSerializer
       attributes :id,
-        :created_at,
-        :updated_at,
-        :mappable_id,
-        :mappable_type
+                 :created_at,
+                 :updated_at,
+                 :mappable_id,
+                 :mappable_type
 
       attribute :xloc, if: -> { object.mappable_type == 'Topic' }
       attribute :yloc, if: -> { object.mappable_type == 'Topic' }
@@ -17,7 +18,7 @@ module Api
         }
       end
 
-      self.class_eval do
+      class_eval do
         embed_dat
       end
     end

app/serializers/api/v2/metacode_serializer.rb

@@ -1,11 +1,12 @@
+# frozen_string_literal: true
 module Api
   module V2
     class MetacodeSerializer < ApplicationSerializer
       attributes :id,
-        :name,
-        :manual_icon,
-        :color,
-        :aws_icon
+                 :name,
+                 :manual_icon,
+                 :color,
+                 :aws_icon
     end
   end
 end

app/serializers/api/v2/synapse_serializer.rb

@@ -1,12 +1,13 @@
+# frozen_string_literal: true
 module Api
   module V2
     class SynapseSerializer < ApplicationSerializer
       attributes :id,
-        :desc,
-        :category,
-        :permission,
-        :created_at,
-        :updated_at
+                 :desc,
+                 :category,
+                 :permission,
+                 :created_at,
+                 :updated_at
 
       def self.embeddable
         {
@@ -16,7 +17,7 @@ module Api
         }
       end
 
-      self.class_eval do
+      class_eval do
         embed_dat
       end
     end

app/serializers/api/v2/token_serializer.rb

@@ -1,10 +1,11 @@
+# frozen_string_literal: true
 module Api
   module V2
     class TokenSerializer < ApplicationSerializer
       attributes :id,
-        :token,
-        :description,
-        :created_at
+                 :token,
+                 :description,
+                 :created_at
     end
   end
 end

app/serializers/api/v2/topic_serializer.rb

@@ -1,13 +1,14 @@
+# frozen_string_literal: true
 module Api
   module V2
     class TopicSerializer < ApplicationSerializer
       attributes :id,
-        :name,
-        :desc,
-        :link,
-        :permission,
-        :created_at,
-        :updated_at
+                 :name,
+                 :desc,
+                 :link,
+                 :permission,
+                 :created_at,
+                 :updated_at
 
       def self.embeddable
         {
@@ -16,7 +17,7 @@ module Api
         }
       end
 
-      self.class_eval do
+      class_eval do
         embed_dat
       end
     end

app/serializers/api/v2/user_serializer.rb

@@ -1,19 +1,22 @@
+# frozen_string_literal: true
 module Api
   module V2
     class UserSerializer < ApplicationSerializer
       attributes :id,
-        :name,
-        :avatar,
-        :is_admin,
-        :generation
+                 :name,
+                 :avatar,
+                 :is_admin,
+                 :generation
 
       def avatar
         object.image.url(:sixtyfour)
       end
 
+      # rubocop:disable Style/PredicateName
       def is_admin
         object.admin
       end
+      # rubocop:enable Style/PredicateName
     end
   end
 end

app/serializers/api/v2/webhook_serializer.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 module Api
   module V2
     class WebhookSerializer < ApplicationSerializer

app/services/map_export_service.rb

@@ -1,4 +1,11 @@
-class MapExportService < Struct.new(:user, :map)
+# frozen_string_literal: true
+class MapExportService
+  attr_reader :user, :map
+  def initialize(user, map)
+    @user = user
+    @map = map
+  end
+
   def json
     # marshal_dump turns OpenStruct into a Hash
     {

app/services/perm.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class Perm
   # e.g. Perm::ISSIONS
   ISSIONS = [:commons, :public, :private].freeze

app/services/webhook_service.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 class WebhookService
   def self.publish!(webhook:, event:)
     return false unless webhook.event_types.include? event.kind

app/views/layouts/_lightboxes.html.erb

@@ -94,7 +94,7 @@
 <p>As a valued beta tester, you have the ability to invite your peers, colleagues and collaborators onto the platform.</p>
 <p>Below is a personal invite link containing your unique access code, which can be used multiple times.</p>
             <div id="joinCodesBox">
-            <p class="joinCodes"><%= determine_invite_link %>
+            <p class="joinCodes"><%= invite_link() %>
             <button class="button" onclick="Metamaps.GlobalUI.shareInvite('<%= @invite_link %>');">COPY INVITE LINK!</button>
             </div>
 

app/views/maps/_newtopic.html.erb

@@ -1,29 +1,34 @@
+<% @metacodes = user_metacodes() %>
+
 <%= form_for Topic.new, url: topics_url, remote: true do |form| %>
   <div class="openMetacodeSwitcher openLightbox" data-open="switchMetacodes">
     <div class="tooltipsAbove">Switch Metacodes</div>
   </div>
+
   <div class="pinCarousel">
     <div class="tooltipsAbove helpPin">Pin Open</div>
     <div class="tooltipsAbove helpUnpin">Unpin</div>
   </div>
+
   <div id="metacodeImg">
-    <% @metacodes = user_metacodes() %>
-    <% set = get_metacodeset() %>
     <% @metacodes.each do |metacode| %>
       <img class="cloudcarousel" width="40" height="40" src="<%= asset_path metacode.icon %>" alt="<%= metacode.name %>" title="<%= metacode.name %>" data-id="<%= metacode.id %>" />
     <% end %>
   </div> 
+
   <%= form.text_field :name, :maxlength => 140, :placeholder => "title..." %>
+
   <div id="metacodeImgTitle"></div>
   <div class="clearfloat"></div>
-<script>
-<% @metacodes.each do |metacode| %>
-  <% if !set %>
-    Metamaps.Create.selectedMetacodes.push("<%= metacode.id %>");
-    Metamaps.Create.newSelectedMetacodes.push("<%= metacode.id %>");
-    Metamaps.Create.selectedMetacodeNames.push("<%= metacode.name %>");
-    Metamaps.Create.newSelectedMetacodeNames.push("<%= metacode.name %>");
-  <% end %>
-<% end %> 
-</script>
+
+  <script>
+    <% @metacodes.each do |metacode| %>
+      <% if !metacodeset() %>
+        Metamaps.Create.selectedMetacodes.push("<%= metacode.id %>");
+        Metamaps.Create.newSelectedMetacodes.push("<%= metacode.id %>");
+        Metamaps.Create.selectedMetacodeNames.push("<%= metacode.name %>");
+        Metamaps.Create.newSelectedMetacodeNames.push("<%= metacode.name %>");
+      <% end %>
+    <% end %> 
+  </script>
 <% end %>

config.ru

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 # This file is used by Rack-based servers to start the application.
 
 require ::File.expand_path('../config/environment', __FILE__)

config/application.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require_relative 'boot'
 
 require 'csv'

config/boot.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 require 'rubygems'
 require 'rails/commands/server'
 

config/environment.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 # Load the Rails application.
 require_relative 'application'
 

config/environments/development.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 Metamaps::Application.configure do
   # Settings specified here will take precedence over those in config/application.rb
 

config/environments/production.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 Rails.application.configure do
   # Settings specified here will take precedence over those in config/application.rb
 

config/environments/test.rb

@@ -1,3 +1,4 @@
+# frozen_string_literal: true
 Metamaps::Application.configure do
   # Settings specified here will take precedence over those in config/application.rb
 

config/initializers/access_codes.rb

@@ -1,4 +1,7 @@
+# frozen_string_literal: true
 $codes = []
 if ActiveRecord::Base.connection.data_source_exists? 'users'
-  $codes = ActiveRecord::Base.connection.execute('SELECT code FROM users').map { |user| user['code'] }
+  $codes = ActiveRecord::Base.connection
+                             .execute('SELECT code FROM users')
+                             .map { |user| user['code'] }
 end