rubocop -a

app/controllers/application_controller.rb

@@ -9,7 +9,7 @@ class ApplicationController < ActionController::Base
 
   # calculate how long a user needed for a form input, ussually we just
   def input_to_fast?
-    fail 'session[:form_timestamp] not set' unless session[:form_timestamp]
+    raise 'session[:form_timestamp] not set' unless session[:form_timestamp]
     duration = Time.now - session[:form_timestamp].to_time
     duration < INPUT_TIMEOUT
   end

app/controllers/cities_autocomplete_controller.rb

@@ -4,7 +4,7 @@ class CitiesAutocompleteController < ApplicationController
   def index
     @cities = CSV.read Rails.root.join('db', 'plz_ch.csv')
     query = ActionController::Base.helpers.sanitize(params[:query])
-    @cities = @cities.select { |city| city.first =~ /#{query}/i || city.last =~ /#{query}/i  }
+    @cities = @cities.select { |city| city.first =~ /#{query}/i || city.last =~ /#{query}/i }
     @cities = @cities.map { |city| { plz: city.first, city: city.last } }
 
     render json: @cities.uniq