5 files changed, 22 insertions, 4 deletions
diff --git a/railties/lib/rails/application/bootstrap.rb b/railties/lib/rails/application/bootstrap.rb
index 44b49556d7..e3c0759f95 100644
--- a/railties/lib/rails/application/bootstrap.rb
+++ b/railties/lib/rails/application/bootstrap.rb
@@ -1,8 +1,10 @@
+# frozen_string_literal: true
+
 require "fileutils"
 require "active_support/notifications"
 require "active_support/dependencies"
 require "active_support/descendants_tracker"
-require_relative "../secrets"
+require "rails/secrets"
 
 module Rails
   class Application
diff --git a/railties/lib/rails/application/configuration.rb b/railties/lib/rails/application/configuration.rb
index 7e1359c42b..290ec13878 100644
--- a/railties/lib/rails/application/configuration.rb
+++ b/railties/lib/rails/application/configuration.rb
@@ -1,7 +1,9 @@
+# frozen_string_literal: true
+
 require "active_support/core_ext/kernel/reporting"
 require "active_support/file_update_checker"
-require_relative "../engine/configuration"
-require_relative "../source_annotation_extractor"
+require "rails/engine/configuration"
+require "rails/source_annotation_extractor"
 
 module Rails
   class Application
@@ -86,6 +88,10 @@ module Rails
 
           if respond_to?(:active_record)
             active_record.cache_versioning = true
+            # Remove the temporary load hook from SQLite3Adapter when this is removed
+            ActiveSupport.on_load(:active_record_sqlite3adapter) do
+              ActiveRecord::ConnectionAdapters::SQLite3Adapter.represent_boolean_as_integer = true
+            end
           end
 
           if respond_to?(:action_dispatch)
@@ -96,6 +102,10 @@ module Rails
             active_support.use_authenticated_message_encryption = true
           end
 
+          if respond_to?(:action_controller)
+            action_controller.default_protect_from_forgery = true
+          end
+
         else
           raise "Unknown version #{target_version.to_s.inspect}"
         end
@@ -141,7 +151,7 @@ module Rails
       end
 
       # Loads and returns the entire raw configuration of database from
-      # values stored in `config/database.yml`.
+      # values stored in <tt>config/database.yml</tt>.
       def database_configuration
         path = paths["config/database"].existent.first
         yaml = Pathname.new(path) if path
diff --git a/railties/lib/rails/application/default_middleware_stack.rb b/railties/lib/rails/application/default_middleware_stack.rb
index 63300ffef3..ea2273c1f2 100644
--- a/railties/lib/rails/application/default_middleware_stack.rb
+++ b/railties/lib/rails/application/default_middleware_stack.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Rails
   class Application
     class DefaultMiddlewareStack
diff --git a/railties/lib/rails/application/finisher.rb b/railties/lib/rails/application/finisher.rb
index c027d06663..3d938be951 100644
--- a/railties/lib/rails/application/finisher.rb
+++ b/railties/lib/rails/application/finisher.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 module Rails
   class Application
     module Finisher
diff --git a/railties/lib/rails/application/routes_reloader.rb b/railties/lib/rails/application/routes_reloader.rb
index e02ef629f2..2ef09b4162 100644
--- a/railties/lib/rails/application/routes_reloader.rb
+++ b/railties/lib/rails/application/routes_reloader.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "active_support/core_ext/module/delegation"
 
 module Rails