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-rw-r--r--railties/lib/rails/application/configuration.rb13
-rw-r--r--railties/lib/rails/application/finisher.rb8
-rw-r--r--railties/lib/rails/engine.rb26
-rw-r--r--railties/lib/rails/generators/rails/app/templates/Gemfile.tt6
4 files changed, 44 insertions, 9 deletions
diff --git a/railties/lib/rails/application/configuration.rb b/railties/lib/rails/application/configuration.rb
index b7838f7e32..16fbc99e7a 100644
--- a/railties/lib/rails/application/configuration.rb
+++ b/railties/lib/rails/application/configuration.rb
@@ -20,7 +20,7 @@ module Rails
:read_encrypted_secrets, :log_level, :content_security_policy_report_only,
:content_security_policy_nonce_generator, :require_master_key, :credentials
- attr_reader :encoding, :api_only, :loaded_config_version
+ attr_reader :encoding, :api_only, :loaded_config_version, :autoloader
def initialize(*)
super
@@ -64,6 +64,7 @@ module Rails
@credentials = ActiveSupport::OrderedOptions.new
@credentials.content_path = default_credentials_content_path
@credentials.key_path = default_credentials_key_path
+ @autoloader = :classic
end
def load_defaults(target_version)
@@ -117,6 +118,8 @@ module Rails
when "6.0"
load_defaults "5.2"
+ self.autoloader = :zeitwerk if RUBY_ENGINE == "ruby"
+
if respond_to?(:action_view)
action_view.default_enforce_utf8 = false
end
@@ -267,6 +270,14 @@ module Rails
end
end
+ def autoloader=(autoloader)
+ if %i(classic zeitwerk).include?(autoloader)
+ @autoloader = autoloader
+ else
+ raise ArgumentError, "config.autoloader may be :classic or :zeitwerk, got #{autoloader.inspect} instead"
+ end
+ end
+
class Custom #:nodoc:
def initialize
@configurations = Hash.new
diff --git a/railties/lib/rails/application/finisher.rb b/railties/lib/rails/application/finisher.rb
index 04aaf6dd9a..39e8ef6631 100644
--- a/railties/lib/rails/application/finisher.rb
+++ b/railties/lib/rails/application/finisher.rb
@@ -21,6 +21,13 @@ module Rails
end
end
+ initializer :let_zeitwerk_take_over do
+ if config.autoloader == :zeitwerk
+ require "active_support/dependencies/zeitwerk_integration"
+ ActiveSupport::Dependencies::ZeitwerkIntegration.take_over
+ end
+ end
+
initializer :add_builtin_route do |app|
if Rails.env.development?
app.routes.prepend do
@@ -66,6 +73,7 @@ module Rails
initializer :eager_load! do
if config.eager_load
ActiveSupport.run_load_hooks(:before_eager_load, self)
+ Zeitwerk::Loader.eager_load_all if defined?(Zeitwerk)
config.eager_load_namespaces.each(&:eager_load!)
end
end
diff --git a/railties/lib/rails/engine.rb b/railties/lib/rails/engine.rb
index d6c329b581..2485158a7b 100644
--- a/railties/lib/rails/engine.rb
+++ b/railties/lib/rails/engine.rb
@@ -472,12 +472,10 @@ module Rails
# Eager load the application by loading all ruby
# files inside eager_load paths.
def eager_load!
- config.eager_load_paths.each do |load_path|
- # Starts after load_path plus a slash, ends before ".rb".
- relname_range = (load_path.to_s.length + 1)...-3
- Dir.glob("#{load_path}/**/*.rb").sort.each do |file|
- require_dependency file[relname_range]
- end
+ if Rails.autoloader
+ eager_load_with_zeitwerk!
+ else
+ eager_load_with_dependencies!
end
end
@@ -653,6 +651,22 @@ module Rails
private
+ def eager_load_with_zeitwerk!
+ (config.eager_load_paths - Zeitwerk::Loader.all_dirs).each do |path|
+ Dir.glob("#{path}/**/*.rb").sort.each { |file| require file }
+ end
+ end
+
+ def eager_load_with_dependencies!
+ config.eager_load_paths.each do |load_path|
+ # Starts after load_path plus a slash, ends before ".rb".
+ relname_range = (load_path.to_s.length + 1)...-3
+ Dir.glob("#{load_path}/**/*.rb").sort.each do |file|
+ require_dependency file[relname_range]
+ end
+ end
+ end
+
def load_config_initializer(initializer) # :doc:
ActiveSupport::Notifications.instrument("load_config_initializer.railties", initializer: initializer) do
load(initializer)
diff --git a/railties/lib/rails/generators/rails/app/templates/Gemfile.tt b/railties/lib/rails/generators/rails/app/templates/Gemfile.tt
index d39b5d311f..a1f1224a45 100644
--- a/railties/lib/rails/generators/rails/app/templates/Gemfile.tt
+++ b/railties/lib/rails/generators/rails/app/templates/Gemfile.tt
@@ -28,7 +28,7 @@ ruby <%= "'#{RUBY_VERSION}'" -%>
<% if depend_on_bootsnap? -%>
# Reduces boot times through caching; required in config/boot.rb
-gem 'bootsnap', '>= 1.1.0', require: false
+gem 'bootsnap', '>= 1.4.0', require: false
<%- end -%>
<%- if options.api? -%>
@@ -36,7 +36,9 @@ gem 'bootsnap', '>= 1.1.0', require: false
# gem 'rack-cors'
<%- end -%>
-<% if RUBY_ENGINE == 'ruby' -%>
+<% if RUBY_ENGINE == "ruby" -%>
+gem "zeitwerk", ">= 1.0.0"
+
group :development, :test do
# Call 'byebug' anywhere in the code to stop execution and get a debugger console
gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]