Enable Style/SpaceAroundOperators Rubocop

Cleared all the offenses for Style/SpaceAroundOperators

Added a description for the Style/SpaceAroundOperators Rubocop.

app/models/conference.rb

@@ -160,7 +160,7 @@ class Conference < ActiveRecord::Base
           result[state] = pad_array_left_not_kumulative(start_week, values)
         end
       end
-      result['Weeks'] =  weeks > 0 ? (1..weeks).to_a : 0
+      result['Weeks'] = weeks > 0 ? (1..weeks).to_a : 0
     end
     result
   end
@@ -343,8 +343,8 @@ class Conference < ActiveRecord::Base
   # * +hash+ -> hash
   def registration_distribution
     reg = registrations.includes(:user)
-    attended_value =  { 'value' => reg.where(attended: true).count, 'color' => 'magenta' }
-    not_attended_value =  { 'value' => reg.where.not(attended: true).count, 'color' => 'blue' }
+    attended_value = { 'value' => reg.where(attended: true).count, 'color' => 'magenta' }
+    not_attended_value = { 'value' => reg.where.not(attended: true).count, 'color' => 'blue' }
     { 'Attended' => attended_value, 'Not attended' => not_attended_value }
   end
 
@@ -360,7 +360,7 @@ class Conference < ActiveRecord::Base
   def affiliation_distribution
     counted_affiliations = registrations.joins(:user).group(:affiliation).count
     result = {}
-    i=1
+    i = 1
     others = 0
     none = 0
     counted_affiliations.each do |key, value|
@@ -625,7 +625,7 @@ class Conference < ActiveRecord::Base
   def hours_from_start_time(start_hour, end_hour)
     current_time = Time.find_zone(timezone).now
     current_hour = current_time.strftime('%H').to_i
-    (start_hour..(end_hour-1)).cover?(current_hour) ? current_hour - start_hour : 0
+    (start_hour..(end_hour - 1)).cover?(current_hour) ? current_hour - start_hour : 0
   end
 
   private
@@ -641,7 +641,7 @@ class Conference < ActiveRecord::Base
   # consecutive colors clearly different.
   def next_color_component(component, i)
     big_prime_numbers = {r: 113, g: 67, b: 151}
-    ((i*big_prime_numbers[component])%239 + 16).to_s(16)
+    ((i * big_prime_numbers[component]) % 239 + 16).to_s(16)
   end
 
   after_create do

app/models/event.rb

@@ -135,7 +135,7 @@ class Event < ActiveRecord::Base
 
   def process_confirmation
     if program.conference.email_settings.send_on_confirmed_without_registration? &&
-        program.conference.email_settings.confirmed_without_registration_body  &&
+        program.conference.email_settings.confirmed_without_registration_body &&
         program.conference.email_settings.confirmed_without_registration_subject
       if program.conference.registrations.where(user_id: submitter.id).first.nil?
         Mailbot.confirm_reminder_mail(self).deliver_later

app/models/target.rb

@@ -58,7 +58,7 @@ class Target < ActiveRecord::Base
       numerator = conference.current_program_minutes
     end
 
-    progress = (numerator / target_count.to_f  * 100).round(0).to_s
+    progress = (numerator / target_count.to_f * 100).round(0).to_s
     result = {
       'target_name' => to_s,
       'campaign_name' => campaign.name,

app/models/ticket.rb

@@ -22,7 +22,7 @@ class Ticket < ActiveRecord::Base
   def tickets_paid(user)
     paid_tickets    = quantity_bought_by(user, paid: true)
     unpaid_tickets  = quantity_bought_by(user, paid: false)
-    "#{paid_tickets}/#{paid_tickets+unpaid_tickets}"
+    "#{paid_tickets}/#{paid_tickets + unpaid_tickets}"
   end
 
   def quantity_bought_by(user, paid: false)
@@ -44,7 +44,7 @@ class Ticket < ActiveRecord::Base
       tickets.each do |ticket|
         price = ticket.total_price(user, paid: paid)
         if result
-          result +=  price unless price.zero?
+          result += price unless price.zero?
         else
           result = price
         end