Test Rails 8.0 and Upgrade Demo App to 8.0

.github/workflows/ruby.yml

@@ -33,7 +33,7 @@ jobs:
       fail-fast: false
       matrix:
         ruby-version: [ '3.4', '3.3', '3.2', 'ruby-head' ]
-        gemfile: [ '7.2', '7.1', 'edge' ]
+        gemfile: [ '8.0', '7.2', '7.1', 'edge' ]
     env:
       BUNDLE_GEMFILE: gemfiles/${{ matrix.gemfile }}.gemfile
     steps:

Rakefile

@@ -32,7 +32,6 @@ task default: %i[test rubocop:autocorrect]
 namespace :test do
   desc "Run tests for all supported Rails versions, with current Ruby version"
   task :all do
-    original_directory = Dir.pwd
     original_gemfile = ENV["BUNDLE_GEMFILE"]
     gemfiles = Dir.glob("gemfiles/*.gemfile").reject { |f| File.basename(f) == "common.gemfile" }
     gemfiles.each do |f|
@@ -41,13 +40,14 @@ namespace :test do
       system("bundle exec rake test")
     end
 
+    original_directory = Dir.pwd
     Dir.chdir("demo")
     ENV.delete("BUNDLE_GEMFILE")
     system("bundle check") || system("bundle install")
     system("bundle exec rake test:all")
 
   ensure
     original_gemfile.nil? ? ENV.delete("BUNDLE_GEMFILE") : ENV["BUNDLE_GEMFILE"] = original_gemfile
-    Dir.chdir(original_directory)
+    Dir.chdir(original_directory) unless original_directory.nil?
   end
 end

gemfiles/8.0.gemfile

@@ -0,0 +1,9 @@
+gems = "#{__dir__}/common.gemfile"
+eval File.read(gems), binding, gems # rubocop: disable Security/Eval
+
+gem "bigdecimal" if Gem::Version.new(RUBY_VERSION) >= Gem::Version.new("3.4.0")
+gem "drb" if Gem::Version.new(RUBY_VERSION) >= Gem::Version.new("3.4.0")
+gem "mutex_m" if Gem::Version.new(RUBY_VERSION) >= Gem::Version.new("3.4.0")
+gem "rails", "~> 8.0.0"
+gem "sprockets-rails", require: "sprockets/railtie"
+gem "sqlite3"

lib/bootstrap_form/inputs/check_box.rb

@@ -63,7 +63,7 @@ def check_box_value(name, value)
         # label's `for` attribute needs to match checkbox tag's id,
         # IE sanitized value, IE
         # https://github.com/rails/rails/blob/5-0-stable/actionview/lib/action_view/helpers/tags/base.rb#L123-L125
-        "#{name}_#{value.to_s.gsub(/\s/, '_').gsub(/[^-[[:word:]]]/, '').mb_chars.downcase}"
+        "#{name}_#{value.to_s.gsub(/\s/, '_').gsub(/[^-[[:word:]]]/, '').downcase}"
       end
 
       def check_box_classes(name, options)