Drop Support for ruby@2.x.x

Commit to requiring `ruby@3.1`

Remove `ruby@2.6`, `ruby@2.7`, `ruby@3.0`, `rails@6.1`, and `rails@7.0`
from the CI matrix, along with any `RUBY_VERSION < "3"` conditionals.

The implementation changes include replace older syntaxes with newer
variants. For example, utilize `...` in place of `*args, &block`, rely
on `**`-ing attribute `Hash` arguments, etc.

.github/workflows/ci.yml

@@ -5,17 +5,13 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        rails: [ "6.1", "7.0", "7.1", "7.2" ]
-        ruby: [ "2.7", "3.0", "3.1", "3.2", "3.3" ]
+        rails: [ "7.1", "7.2" ]
+        ruby: [ "3.1", "3.2", "3.3" ]
         allow-fail: [ false ]
         include:
-          - { ruby: "2.6",  rails: "6.1" }
           - { ruby: "3.3",  rails: "main", allow-fail: true }
           - { ruby: "3.2",  rails: "main", allow-fail: true }
           - { ruby: "head", rails: "main", allow-fail: true }
-        exclude:
-          - { ruby: "2.7", rails: "7.2" }
-          - { ruby: "3.0", rails: "7.2" }
 
     env:
       FERRUM_PROCESS_TIMEOUT: 25
@@ -37,7 +33,6 @@ jobs:
 
       - name: Run Bug Template Tests
         run: ruby bug_report_template.rb || ruby bug_report_template.rb
-        continue-on-error: ${{ startsWith(matrix.ruby, "2") || false }}
 
       - name: Run tests
         id: test

Gemfile

@@ -15,26 +15,16 @@ gem "sprockets-rails"
 
 gem 'rake'
 gem 'byebug'
-
-if RUBY_VERSION < "3"
-  gem "rack", "< 3"
-  gem "puma", "< 6"
-else
-  gem "rack"
-  gem "puma"
-end
+gem 'puma'
+gem 'rack'
 
 group :development, :test do
-  if rails_version == "6.1"
-    gem "importmap-rails", "0.6.1"
-  else
-    gem "importmap-rails"
-  end
+  gem 'importmap-rails'
 end
 
 group :test do
   gem 'capybara'
   gem 'rexml'
   gem 'cuprite', '~> 0.9', require: 'capybara/cuprite'
-  gem 'sqlite3', '1.5'
+  gem 'sqlite3', '~> 1.5'
 end

app/channels/turbo/streams/broadcasts.rb

@@ -38,8 +38,6 @@ def broadcast_refresh_to(*streamables, **opts)
   end
 
   def broadcast_action_to(*streamables, action:, target: nil, targets: nil, attributes: {}, **rendering)
-    attributes.deep_symbolize_keys! if RUBY_VERSION < "3"
-
     broadcast_stream_to(*streamables, content: turbo_stream_action_tag(
       action, target: target, targets: targets, template: render_broadcast_action(rendering), **attributes)
     )

app/helpers/turbo/streams/action_helper.rb

@@ -22,12 +22,7 @@ module Turbo::Streams::ActionHelper
   #   message = Message.find(1)
   #   turbo_stream_action_tag "remove", target: [message, :special]
   #   # => <turbo-stream action="remove" target="special_message_1"></turbo-stream>
-  def turbo_stream_action_tag(action, attributes = {})
-    attributes.deep_symbolize_keys! if RUBY_VERSION < "3"
-
-    target = attributes.delete(:target)
-    targets = attributes.delete(:targets)
-    template = attributes.delete(:template)
+  def turbo_stream_action_tag(action, target: nil, targets: nil, template: nil, **attributes)
     template = action.to_sym.in?(%i[ remove refresh ]) ? "" : tag.template(template.to_s.html_safe)
 
     if target = convert_to_turbo_stream_dom_id(target)
@@ -44,7 +39,7 @@ def turbo_stream_action_tag(action, attributes = {})
   #   turbo_stream_refresh_tag
   #   # => <turbo-stream action="refresh"></turbo-stream>
   def turbo_stream_refresh_tag(request_id: Turbo.current_request_id, **attributes)
-    turbo_stream_action_tag(:refresh, attributes.with_defaults({ "request-id": request_id }.compact))
+    turbo_stream_action_tag(:refresh, "request-id": request_id.presence, **attributes)
   end
 
   private

app/models/concerns/turbo/broadcastable.rb

@@ -508,7 +508,7 @@ def broadcast_target_default
       self.class.broadcast_target_default
     end
 
-    def extract_options_and_add_target(rendering, target: broadcast_target_default)
+    def extract_options_and_add_target(rendering = {}, target: broadcast_target_default)
       broadcast_rendering_with_defaults(rendering).tap do |options|
         options[:target] = target if !options.key?(:target) && !options.key?(:targets)
       end

app/models/turbo/streams/tag_builder.rb

@@ -240,8 +240,8 @@ def prepend_all(targets, content = nil, **rendering, &block)
   #
   #   turbo_stream.refresh request_id: "abc123"
   #   # => <turbo-stream action="refresh" request-id="abc123"></turbo-stream>
-  def refresh(**options)
-    turbo_stream_refresh_tag(**options)
+  def refresh(...)
+    turbo_stream_refresh_tag(...)
   end
 
   # Send an action of the type <tt>name</tt> to <tt>target</tt>. Options described in the concrete methods.

lib/turbo/engine.rb

@@ -164,7 +164,7 @@ class TurboStreamEncoder < IdentityEncoder
       ActiveSupport.on_load(:action_dispatch_system_test_case) do
         app.config.turbo.test_connect_after_actions.map do |method|
           class_eval <<~RUBY, __FILE__, __LINE__ + 1
-            def #{method}(*args, &block)                          # def visit(*args, &block)
+            def #{method}(...)                                    # def visit(...)
               super.tap { connect_turbo_cable_stream_sources }    #   super.tap { connect_turbo_cable_stream_sources }
             end                                                   # end
           RUBY

lib/turbo/system_test_helper.rb

@@ -51,8 +51,8 @@ def connect_turbo_cable_stream_sources(**options, &block)
   #
   # In addition to the filters listed above, accepts any valid Capybara global
   # filter option.
-  def assert_turbo_cable_stream_source(*args, &block)
-    assert_selector(:turbo_cable_stream_source, *args, &block)
+  def assert_turbo_cable_stream_source(...)
+    assert_selector(:turbo_cable_stream_source, ...)
   end
 
   # Asserts that a `<turbo-cable-stream-source>` element is absent from the
@@ -75,8 +75,8 @@ def assert_turbo_cable_stream_source(*args, &block)
   #
   # In addition to the filters listed above, accepts any valid Capybara global
   # filter option.
-  def assert_no_turbo_cable_stream_source(*args, &block)
-    assert_no_selector(:turbo_cable_stream_source, *args, &block)
+  def assert_no_turbo_cable_stream_source(...)
+    assert_no_selector(:turbo_cable_stream_source, ...)
   end
 
   Capybara.add_selector :turbo_cable_stream_source do

test/test_helper.rb

@@ -8,9 +8,7 @@
 ActionCable.server.config.logger = Logger.new(STDOUT) if ENV["VERBOSE"]
 
 module ActionViewTestCaseExtensions
-  def render(*args, &block)
-    ApplicationController.renderer.render(*args, &block)
-  end
+  delegate :render, to: ApplicationController
 end
 
 class ActiveSupport::TestCase

turbo-rails.gemspec

@@ -9,10 +9,10 @@ Gem::Specification.new do |s|
   s.homepage = "https://github.com/hotwired/turbo-rails"
   s.license  = "MIT"
 
-  s.required_ruby_version = ">= 2.6.0"
+  s.required_ruby_version = ">= 3.1"
 
-  s.add_dependency "actionpack", ">= 6.0.0"
-  s.add_dependency "railties", ">= 6.0.0"
+  s.add_dependency "actionpack", ">= 7.1.0"
+  s.add_dependency "railties", ">= 7.1.0"
 
   s.files = Dir["{app,config,lib}/**/*", "MIT-LICENSE", "Rakefile", "README.md"]