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-rw-r--r--railties/CHANGELOG.md4
-rw-r--r--railties/lib/rails/commands/server/server_command.rb9
-rw-r--r--railties/test/application/server_test.rb31
3 files changed, 43 insertions, 1 deletions
diff --git a/railties/CHANGELOG.md b/railties/CHANGELOG.md
index ec41d17a9f..f4a9b6e772 100644
--- a/railties/CHANGELOG.md
+++ b/railties/CHANGELOG.md
@@ -1,3 +1,7 @@
+* Deprecate support of use `Rails::Application` subclass to start Rails server.
+
+ *Yuji Yaginuma*
+
* Add `ruby x.x.x` version to `Gemfile` and create `.ruby-version`
root file containing current Ruby version when new Rails applications are
created.
diff --git a/railties/lib/rails/commands/server/server_command.rb b/railties/lib/rails/commands/server/server_command.rb
index ce258341f6..de69b4586b 100644
--- a/railties/lib/rails/commands/server/server_command.rb
+++ b/railties/lib/rails/commands/server/server_command.rb
@@ -2,6 +2,8 @@ require "fileutils"
require "optparse"
require "action_dispatch"
require "rails"
+require "active_support/deprecation"
+require "active_support/core_ext/string/filters"
require_relative "../../dev_caching"
module Rails
@@ -18,10 +20,15 @@ module Rails
set_environment
end
- # TODO: this is no longer required but we keep it for the moment to support older config.ru files.
def app
@app ||= begin
app = super
+ if app.is_a?(Class)
+ ActiveSupport::Deprecation.warn(<<-MSG.squish)
+ Use `Rails::Application` subclass to start the server is deprecated and will be removed in Rails 6.0.
+ Please change `run #{app}` to `run Rails.application` in config.ru.
+ MSG
+ end
app.respond_to?(:to_app) ? app.to_app : app
end
end
diff --git a/railties/test/application/server_test.rb b/railties/test/application/server_test.rb
new file mode 100644
index 0000000000..07880a5025
--- /dev/null
+++ b/railties/test/application/server_test.rb
@@ -0,0 +1,31 @@
+require "isolation/abstract_unit"
+require "rails/command"
+require "rails/commands/server/server_command"
+
+module ApplicationTests
+ class ServerTest < ActiveSupport::TestCase
+ include ActiveSupport::Testing::Isolation
+
+ def setup
+ build_app
+ end
+
+ def teardown
+ teardown_app
+ end
+
+ test "deprecate support of older `config.ru`" do
+ remove_file "config.ru"
+ app_file "config.ru", <<-RUBY
+ require_relative 'config/environment'
+ run AppTemplate::Application
+ RUBY
+
+ server = Rails::Server.new(config: "#{app_path}/config.ru")
+ server.app
+
+ log = File.read(Rails.application.config.paths["log"].first)
+ assert_match(/DEPRECATION WARNING: Use `Rails::Application` subclass to start the server is deprecated/, log)
+ end
+ end
+end