Sequel doesn’t pay much attention to
timezones by default, but you can set it handle timezones if you want.
There are three separate timezone settings, #application_timezone,
#database_timezone,
and typecast_timezone. All three timezones have getter and setter methods.
You can set all three timezones to the same value at once via
Sequel.default_timezone=
.
The only timezone values that are supported by default are
:utc
(convert to UTC), :local
(convert to local
time), and nil
(don’t convert). If you need to convert to a
specific timezone, or need the timezones being used to change based on the
environment (e.g. current user), you need to use the
named_timezones
extension (and use DateTime
as
the datetime_class
). Sequel also
ships with a thread_local_timezones
extensions which allows
each thread to have its own timezone values for each of the timezones.
The timezone you want the application to use. This is the timezone that incoming times from the database and typecasting are converted to.
The timezone that incoming data that Sequel needs to typecast is assumed to be already in (if they don’t include an offset).
Convert the given Time
/DateTime
object into the
database timezone, used when literalizing objects in an SQL string.
# File lib/sequel/timezones.rb, line 40 def application_to_database_timestamp(v) convert_output_timestamp(v, Sequel.database_timezone) end
Converts the object to the given output_timezone
.
# File lib/sequel/timezones.rb, line 45 def convert_output_timestamp(v, output_timezone) if output_timezone if v.is_a?(DateTime) case output_timezone when :utc v.new_offset(0) when :local v.new_offset(local_offset_for_datetime(v)) else convert_output_datetime_other(v, output_timezone) end else v.send(output_timezone == :utc ? :getutc : :getlocal) end else v end end
Converts the given object from the given input timezone to the
application_timezone
using
convert_input_timestamp
and
convert_output_timestamp
.
# File lib/sequel/timezones.rb, line 67 def convert_timestamp(v, input_timezone) begin if v.is_a?(Date) && !v.is_a?(DateTime) # Dates handled specially as they are assumed to already be in the application_timezone if datetime_class == DateTime DateTime.civil(v.year, v.month, v.day, 0, 0, 0, application_timezone == :local ? (defined?(Rational) ? Rational(Time.local(v.year, v.month, v.day).utc_offset, 86400) : Time.local(v.year, v.month, v.day).utc_offset/86400.0) : 0) else Time.send(application_timezone == :utc ? :utc : :local, v.year, v.month, v.day) end else convert_output_timestamp(convert_input_timestamp(v, input_timezone), application_timezone) end rescue InvalidValue raise rescue => e raise convert_exception_class(e, InvalidValue) end end
Convert the given object into an object of
Sequel.datetime_class
in the
application_timezone
. Used when converting datetime/timestamp
columns returned by the database.
# File lib/sequel/timezones.rb, line 89 def database_to_application_timestamp(v) convert_timestamp(v, Sequel.database_timezone) end
Sets the database, application, and typecasting timezones to the given timezone.
# File lib/sequel/timezones.rb, line 94 def default_timezone=(tz) self.database_timezone = tz self.application_timezone = tz self.typecast_timezone = tz end
Convert the given object into an object of
Sequel.datetime_class
in the
application_timezone
. Used when typecasting values when
assigning them to model datetime attributes.
# File lib/sequel/timezones.rb, line 103 def typecast_to_application_timestamp(v) convert_timestamp(v, Sequel.typecast_timezone) end