Forbid the use of `#reload` and prefer `#reset`

The `#reload` makes to load all objects into memory,
and the main purpose of `#reload` is to drop the association cache.

The `#reset` seems to solve exactly that case.

.rubocop.yml

@@ -204,3 +204,9 @@ Style/ReturnNil:
 # nil values on the left hand side
 Performance/RegexpMatch:
   Enabled: false
+
+ActiveRecordAssociationReload:
+  Enabled: true
+  Exclude:
+    - 'spec/**/*'
+    - 'ee/spec/**/*'

app/controllers/admin/projects_controller.rb

@@ -40,7 +40,7 @@ class Admin::ProjectsController < Admin::ApplicationController
     namespace = Namespace.find_by(id: params[:new_namespace_id])
     ::Projects::TransferService.new(@project, current_user, params.dup).execute(namespace)
-    @project.reload
+    @project.reset
     redirect_to admin_project_path(@project)
   end
   # rubocop: enable CodeReuse/ActiveRecord

app/controllers/profiles/passwords_controller.rb

@@ -55,7 +55,7 @@ class Profiles::PasswordsController < Profiles::ApplicationController
       flash[:notice] = "Password was successfully updated. Please login with it"
       redirect_to new_user_session_path
     else
-      @user.reload
+      @user.reset
       render 'edit'
     end
   end

app/controllers/projects/imports_controller.rb

@@ -14,7 +14,7 @@ class Projects::ImportsController < Projects::ApplicationController
   def create
     if @project.update(import_params)
-      @project.import_state.reload.schedule
+      @project.import_state.reset.schedule
     end
     redirect_to project_import_path(@project)

app/controllers/projects_controller.rb

@@ -237,7 +237,7 @@ class ProjectsController < Projects::ApplicationController
   def toggle_star
     current_user.toggle_star(@project)
-    @project.reload
+    @project.reset
     render json: {
       star_count: @project.star_count

app/models/application_record.rb

@@ -3,6 +3,8 @@
 class ApplicationRecord < ActiveRecord::Base
   self.abstract_class = true
+  alias_method :reset, :reload
+
   def self.id_in(ids)
     where(id: ids)
   end

app/models/merge_request_diff.rb

@@ -387,7 +387,7 @@ class MergeRequestDiff < ApplicationRecord
       save!
     end
-    merge_request_diff_files.reload
+    merge_request_diff_files.reset
   end
   private
@@ -541,10 +541,10 @@ class MergeRequestDiff < ApplicationRecord
   def save_commits
     MergeRequestDiffCommit.create_bulk(self.id, compare.commits.reverse)
-    # merge_request_diff_commits.reload is preferred way to reload associated
+    # merge_request_diff_commits.reset is preferred way to reload associated
     # objects but it returns cached result for some reason in this case
     # we can circumvent that by specifying that we need an uncached reload
-    commits = self.class.uncached { merge_request_diff_commits.reload }
+    commits = self.class.uncached { merge_request_diff_commits.reset }
     self.commits_count = commits.size
   end

app/services/groups/destroy_service.rb

@@ -20,7 +20,7 @@ module Groups
       end
       # reload the relation to prevent triggering destroy hooks on the projects again
-      group.projects.reload
+      group.projects.reset
       group.children.each do |group|
         # This needs to be synchronous since the namespace gets destroyed below

app/services/notes/update_service.rb

@@ -22,7 +22,7 @@ module Notes
         # We need to refresh the previous suggestions call cache
         # in order to get the new records.
-        note.reload
+        note.reset
       end
       note

app/services/projects/detect_repository_languages_service.rb

@@ -29,7 +29,7 @@ module Projects
         set_detected_repository_languages
       end
-      project.repository_languages.reload
+      project.repository_languages.reset
     end
     # rubocop: enable CodeReuse/ActiveRecord

app/services/projects/move_project_group_links_service.rb

@@ -26,7 +26,7 @@ module Projects
     # Remove remaining project group links from source_project
     def remove_remaining_project_group_links
-      source_project.reload.project_group_links.destroy_all # rubocop: disable DestroyAll
+      source_project.reset.project_group_links.destroy_all # rubocop: disable DestroyAll
     end
     def group_links_in_target_project

app/services/projects/transfer_service.rb

@@ -30,7 +30,7 @@ module Projects
       true
     rescue Projects::TransferService::TransferError => ex
-      project.reload
+      project.reset
       project.errors.add(:new_namespace, ex.message)
       false
     end
@@ -122,7 +122,7 @@ module Projects
     def rollback_side_effects
       rollback_folder_move
-      project.reload
+      project.reset
       update_namespace_and_visibility(@old_namespace)
       update_repository_configuration(@old_path)
     end

app/services/users/migrate_to_ghost_user_service.rb

@@ -33,7 +33,7 @@ module Users
         end
       end
-      user.reload
+      user.reset
     end
     private

app/services/users/refresh_authorized_projects_service.rb

@@ -25,7 +25,7 @@ module Users
       # We need an up to date User object that has access to all relations that
       # may have been created earlier. The only way to ensure this is to reload
       # the User object.
-      user.reload
+      user.reset
     end
     def execute
@@ -84,7 +84,7 @@ module Users
       # Since we batch insert authorization rows, Rails' associations may get
       # out of sync. As such we force a reload of the User object.
-      user.reload
+      user.reset
     end
     def fresh_access_levels_per_project

app/views/devise/mailer/email_changed.html.haml

@@ -2,7 +2,7 @@
 - if @resource.try(:unconfirmed_email?)
   %p
-    We're contacting you to notify you that your email is being changed to #{@resource.reload.unconfirmed_email}.
+    We're contacting you to notify you that your email is being changed to #{@resource.reset.unconfirmed_email}.
 - else
   %p
     We're contacting you to notify you that your email has been changed to #{@resource.email}.

app/views/devise/mailer/email_changed.text.erb

 Hello, <%= @resource.name %>!
 <% if @resource.try(:unconfirmed_email?) %>
-We're contacting you to notify you that your email is being changed to <%= @resource.reload.unconfirmed_email %>.
+We're contacting you to notify you that your email is being changed to <%= @resource.reset.unconfirmed_email %>.
 <% else %>
 We're contacting you to notify you that your email has been changed to <%= @resource.email %>.
 <% end %>

lib/api/pipelines.rb

@@ -137,7 +137,7 @@ module API
         pipeline.cancel_running
         status 200
-        present pipeline.reload, with: Entities::Pipeline
+        present pipeline.reset, with: Entities::Pipeline
       end
     end

lib/api/projects.rb

@@ -351,7 +351,7 @@ module API
           not_modified!
         else
           current_user.toggle_star(user_project)
-          user_project.reload
+          user_project.reset
           present user_project, with: Entities::Project, current_user: current_user
         end
@@ -363,7 +363,7 @@ module API
       post ':id/unstar' do
         if current_user.starred?(user_project)
           current_user.toggle_star(user_project)
-          user_project.reload
+          user_project.reset
           present user_project, with: Entities::Project, current_user: current_user
         else
@@ -403,7 +403,7 @@ module API
         result = ::Projects::ForkService.new(fork_from_project, current_user).execute(user_project)
         if result
-          present user_project.reload, with: Entities::Project, current_user: current_user
+          present user_project.reset, with: Entities::Project, current_user: current_user
         else
           render_api_error!("Project already forked", 409) if user_project.forked?
         end

lib/gitlab/optimistic_locking.rb

@@ -12,7 +12,7 @@ module Gitlab
       retries -= 1
       raise unless retries >= 0
-      subject.reload
+      subject.reset
       retry
     end

lib/tasks/gitlab/update_templates.rake

@@ -50,7 +50,7 @@ namespace :gitlab do
         puts "Waiting for the import to finish"
         sleep(5)
-        project.reload
+        project.reset
       end
       Projects::ImportExport::ExportService.new(project, admin).execute