-module Rails
- module Info
- mattr_accessor :properties
- class << (@@properties = [])
- def names
- map &:first
- end
-
- def value_for(property_name)
- if property = assoc(property_name)
- property.last
- end
- end
- end
-
- class << self #:nodoc:
- def property(name, value = nil)
- value ||= yield
- properties << [name, value] if value
- rescue Exception
- end
-
- def frameworks
- %w( active_record action_pack active_resource action_mailer active_support )
- end
-
- def framework_version(framework)
- require "#{framework}/version"
- "#{framework.classify}::VERSION::STRING".constantize
- end
-
- def edge_rails_revision(info = git_info)
- info[/commit ([a-z0-9-]+)/, 1] || freeze_edge_version
- end
-
- def freeze_edge_version
- if File.exist?(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 = '<table>' do
- properties.each do |(name, value)|
- table << %(<tr><td class="name">#{CGI.escapeHTML(name.to_s)}</td>)
- table << %(<td class="value">#{CGI.escapeHTML(value.to_s)}</td></tr>)
- end
- table << '</table>'
- end
- end
-
- protected
- def rails_vendor_root
- @rails_vendor_root ||= "#{RAILS_ROOT}/vendor/rails"
- end
-
- def git_info
- env_lang, ENV['LC_ALL'] = ENV['LC_ALL'], 'C'
- Dir.chdir(rails_vendor_root) do
- silence_stderr { `git log -n 1` }
- 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
-
- property 'Rack version' do
- ::Rack.release
- end
-
- # The Rails version.
- property 'Rails version' do
- Rails::VERSION::STRING
- end
-
- # Versions of each Rails framework (Active Record, Action Pack,
- # Active Resource, Action Mailer, and Active Support).
- frameworks.each do |framework|
- property "#{framework.titlecase} version" do
- framework_version(framework)
- end
- end
-
- # The Rails Git 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