vendor/rails/railties/lib/tasks/misc.rake

   1 task :default => :test
   2 task :environment do
   3   $rails_rake_task = true
   4   require(File.join(RAILS_ROOT, 'config', 'environment'))
   5 end
   6
   7 task :rails_env do
   8   unless defined? RAILS_ENV
   9     RAILS_ENV = ENV['RAILS_ENV'] ||= 'development'
  10   end
  11 end
  12
  13 desc 'Generate a crytographically secure secret key. This is typically used to generate a secret for cookie sessions.'
  14 task :secret do
  15   puts ActiveSupport::SecureRandom.hex(64)
  16 end
  17
  18 require 'active_support'
  19 namespace :time do
  20   namespace :zones do
  21     desc 'Displays names of all time zones recognized by the Rails TimeZone class, grouped by offset. Results can be filtered with optional OFFSET parameter, e.g., OFFSET=-6'
  22     task :all do
  23       build_time_zone_list(:all)
  24     end
  25
  26     desc 'Displays names of US time zones recognized by the Rails TimeZone class, grouped by offset. Results can be filtered with optional OFFSET parameter, e.g., OFFSET=-6'
  27     task :us do
  28       build_time_zone_list(:us_zones)
  29     end
  30
  31     desc 'Displays names of time zones recognized by the Rails TimeZone class with the same offset as the system local time'
  32     task :local do
  33       jan_offset = Time.now.beginning_of_year.utc_offset
  34       jul_offset = Time.now.beginning_of_year.change(:month => 7).utc_offset
  35       offset = jan_offset < jul_offset ? jan_offset : jul_offset
  36       build_time_zone_list(:all, offset)
  37     end
  38
  39     # to find UTC -06:00 zones, OFFSET can be set to either -6, -6:00 or 21600
  40     def build_time_zone_list(method, offset = ENV['OFFSET'])
  41       if offset
  42         offset = if offset.to_s.match(/(\+|-)?(\d+):(\d+)/)
  43           sign = $1 == '-' ? -1 : 1
  44           hours, minutes = $2.to_f, $3.to_f
  45           ((hours * 3600) + (minutes.to_f * 60)) * sign
  46         elsif offset.to_f.abs <= 13
  47           offset.to_f * 3600
  48         else
  49           offset.to_f
  50         end
  51       end
  52       previous_offset = nil
  53       ActiveSupport::TimeZone.__send__(method).each do |zone|
  54         if offset.nil? || offset == zone.utc_offset
  55           puts "\n* UTC #{zone.formatted_offset} *" unless zone.utc_offset == previous_offset
  56           puts zone.name
  57           previous_offset = zone.utc_offset
  58         end
  59       end
  60       puts "\n"
  61     end
  62   end
  63 end