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desc "Generate a cryptographically secure secret key (this is typically used to generate a secret for cookie sessions)."
task :secret do
require "securerandom"
puts SecureRandom.hex(64)
end
desc "List versions of all Rails frameworks and the environment"
task about: :environment do
puts Rails::Info
end
namespace :time do
desc "List all time zones, list by two-letter country code (`rails time:zones[US]`), or list by UTC offset (`rails time:zones[-8]`)"
task :zones, :country_or_offset do |t, args|
zones, offset = ActiveSupport::TimeZone.all, nil
if country_or_offset = args[:country_or_offset]
begin
zones = ActiveSupport::TimeZone.country_zones(country_or_offset)
rescue TZInfo::InvalidCountryCode
offset = country_or_offset
end
end
build_time_zone_list zones, offset
end
namespace :zones do
# desc 'Displays all time zones, also available: time:zones:us, time:zones:local -- filter with OFFSET parameter, e.g., OFFSET=-6'
task :all do
build_time_zone_list ActiveSupport::TimeZone.all
end
# 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'
task :us do
build_time_zone_list ActiveSupport::TimeZone.us_zones
end
# desc 'Displays names of time zones recognized by the Rails TimeZone class with the same offset as the system local time'
task :local do
require "active_support"
require "active_support/time"
jan_offset = Time.now.beginning_of_year.utc_offset
jul_offset = Time.now.beginning_of_year.change(month: 7).utc_offset
offset = jan_offset < jul_offset ? jan_offset : jul_offset
build_time_zone_list(ActiveSupport::TimeZone.all, offset)
end
# to find UTC -06:00 zones, OFFSET can be set to either -6, -6:00 or 21600
def build_time_zone_list(zones, offset = ENV["OFFSET"])
require "active_support"
require "active_support/time"
if offset
offset = if offset.to_s.match(/(\+|-)?(\d+):(\d+)/)
sign = $1 == "-" ? -1 : 1
hours, minutes = $2.to_f, $3.to_f
((hours * 3600) + (minutes.to_f * 60)) * sign
elsif offset.to_f.abs <= 13
offset.to_f * 3600
else
offset.to_f
end
end
previous_offset = nil
zones.each do |zone|
if offset.nil? || offset == zone.utc_offset
puts "\n* UTC #{zone.formatted_offset} *" unless zone.utc_offset == previous_offset
puts zone.name
previous_offset = zone.utc_offset
end
end
puts "\n"
end
end
end
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