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require "cgi"
module Rails
# This module helps build the runtime properties that are displayed in
# Rails::InfoController responses. These include the active Rails version,
# Ruby version, Rack version, and so on.
module Info
mattr_accessor :properties, default: []
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 to_s
column_width = properties.names.map(&: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>".tap do |table|
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 Rails version.
property "Rails version" do
Rails.version.to_s
end
# The Ruby version and platform, e.g. "2.0.0-p247 (x86_64-darwin12.4.0)".
property "Ruby version" do
"#{RUBY_VERSION}-p#{RUBY_PATCHLEVEL} (#{RUBY_PLATFORM})"
end
# The RubyGems version, if it's installed.
property "RubyGems version" do
Gem::RubyGemsVersion
end
property "Rack version" do
::Rack.release
end
property "JavaScript Runtime" do
ExecJS.runtime.name
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