module Rails module Info mattr_accessor :properties class << (@@properties = []) def names map {|(name, )| name} end def value_for(property_name) find {|(name, )| name == property_name}.last rescue nil end end class << self #:nodoc: def property(name, value = nil) value ||= yield properties << [name, value] if value rescue Exception end def components %w( active_record action_pack action_web_service action_mailer active_support ) end def component_version(component) require "#{component}/version" "#{component.classify}::VERSION::STRING".constantize end def edge_rails_revision(info = svn_info) info[/^Revision: (\d+)/, 1] || freeze_edge_version end def freeze_edge_version if File.exists?(rails_vendor_root) begin Dir[File.join(rails_vendor_root, 'REVISION_*')].first.scan(/_(\d+)$/).first.first rescue Dir[File.join(rails_vendor_root, 'TAG_*')].first.scan(/_(.+)$/).first.first rescue 'unknown' end end end def to_s column_width = properties.names.map {|name| name.length}.max ["About your application's environment", *properties.map do |property| "%-#{column_width}s %s" % property end] * "\n" end alias inspect to_s def to_html returning table = '' do properties.each do |(name, value)| table << %() table << %() end table << '
#{CGI.escapeHTML(name.to_s)}#{CGI.escapeHTML(value.to_s)}
' end end protected def rails_vendor_root @rails_vendor_root ||= "#{RAILS_ROOT}/vendor/rails" end def svn_info env_lang, ENV['LC_ALL'] = ENV['LC_ALL'], 'C' Dir.chdir(rails_vendor_root) do silence_stderr { `svn info` } end ensure ENV['LC_ALL'] = env_lang end end # The Ruby version and platform, e.g. "1.8.2 (powerpc-darwin8.2.0)". property 'Ruby version', "#{RUBY_VERSION} (#{RUBY_PLATFORM})" # The RubyGems version, if it's installed. property 'RubyGems version' do Gem::RubyGemsVersion end # The Rails version. property 'Rails version' do Rails::VERSION::STRING end # Versions of each Rails component (Active Record, Action Pack, # Action Web Service, Action Mailer, and Active Support). components.each do |component| property "#{component.titlecase} version" do component_version(component) end end # The Rails SVN revision, if it's checked out into vendor/rails. property 'Edge Rails revision' do edge_rails_revision end # The application's location on the filesystem. property 'Application root' do File.expand_path(RAILS_ROOT) end # The current Rails environment (development, test, or production). property 'Environment' do RAILS_ENV end # The name of the database adapter for the current environment. property 'Database adapter' do ActiveRecord::Base.configurations[RAILS_ENV]['adapter'] end property 'Database schema version' do ActiveRecord::Migrator.current_version rescue nil end end end