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require "cgi"
module Rails
module Info
mattr_accessor :properties
class << (@@properties = [])
def names
map {|val| val.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)
if Object.const_defined?(framework.classify)
require "#{framework}/version"
"#{framework.classify}::VERSION::STRING".constantize
end
end
def to_s
column_width = properties.names.map {|name| name.length}.max
info = properties.map do |name, value|
value = value.join(", ") if value.is_a?(Array)
"%-#{column_width}s %s" % [name, value]
end
info.unshift "About your application's environment"
info * "\n"
end
alias inspect to_s
def to_html
(table = '<table>').tap do
properties.each do |(name, value)|
table << %(<tr><td class="name">#{CGI.escapeHTML(name.to_s)}</td>)
formatted_value = if value.kind_of?(Array)
"<ul>" + value.map { |v| "<li>#{CGI.escapeHTML(v.to_s)}</li>" }.join + "</ul>"
else
CGI.escapeHTML(value.to_s)
end
table << %(<td class="value">#{formatted_value}</td></tr>)
end
table << '</table>'
end
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
property 'JavaScript Runtime' do
ExecJS.runtime.name
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
property 'Middleware' do
Rails.configuration.middleware.map(&:inspect)
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
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