時間ISO 8601在Ruby中

Question

我想這種格式返回一個日期

2015-10-07T00：32：50.877 + 0000

我已經測試了

Time.now.iso8601 
=> "2015-10-21T09:47:50-04:00" 

但我沒有相同的格式

TKS

Answer 1

您可以使用自己的strftime，創建一個要作爲DESCR格式IBED here

您指定的格式應該是%Y-%m-%dT%H:%M:%S.%L%z

所以完整的Ruby代碼將Time.now.strftime('%Y-%m-%dT%H:%M:%S.%L%z')

各種ISO 8601格式：

%Y%m%d   => 20071119     Calendar date (basic) 
%F    => 2007-11-19    Calendar date (extended) 
%Y-%m   => 2007-11     Calendar date, reduced accuracy, specific month 
%Y    => 2007      Calendar date, reduced accuracy, specific year 
%C    => 20      Calendar date, reduced accuracy, specific century 
%Y%j    => 2007323     Ordinal date (basic) 
%Y-%j   => 2007-323     Ordinal date (extended) 
%GW%V%u   => 2007W471     Week date (basic) 
%G-W%V-%u  => 2007-W47-1    Week date (extended) 
%GW%V   => 2007W47     Week date, reduced accuracy, specific week (basic) 
%G-W%V   => 2007-W47     Week date, reduced accuracy, specific week (extended) 
%H%M%S   => 083748     Local time (basic) 
%T    => 08:37:48     Local time (extended) 
%H%M    => 0837      Local time, reduced accuracy, specific minute (basic) 
%H:%M   => 08:37      Local time, reduced accuracy, specific minute (extended) 
%H    => 08      Local time, reduced accuracy, specific hour 
%H%M%S,%L  => 083748,000    Local time with decimal fraction, comma as decimal sign (basic) 
%T,%L   => 08:37:48,000    Local time with decimal fraction, comma as decimal sign (extended) 
%H%M%S.%L  => 083748.000    Local time with decimal fraction, full stop as decimal sign (basic) 
%T.%L   => 08:37:48.000    Local time with decimal fraction, full stop as decimal sign (extended) 
%H%M%S%z   => 083748-0600    Local time and the difference from UTC (basic) 
%T%:z   => 08:37:48-06:00   Local time and the difference from UTC (extended) 
%Y%m%dT%H%M%S%z => 20071119T083748-0600  Date and time of day for calendar date (basic) 
%FT%T%:z   => 2007-11-19T08:37:48-06:00 Date and time of day for calendar date (extended) 
%Y%jT%H%M%S%z => 2007323T083748-0600  Date and time of day for ordinal date (basic) 
%Y-%jT%T%:z  => 2007-323T08:37:48-06:00 Date and time of day for ordinal date (extended) 
%GW%V%uT%H%M%S%z => 2007W471T083748-0600  Date and time of day for week date (basic) 
%G-W%V-%uT%T%:z => 2007-W47-1T08:37:48-06:00 Date and time of day for week date (extended) 
%Y%m%dT%H%M  => 20071119T0837    Calendar date and local time (basic) 
%FT%R   => 2007-11-19T08:37   Calendar date and local time (extended) 
%Y%jT%H%MZ  => 2007323T0837Z    Ordinal date and UTC of day (basic) 
%Y-%jT%RZ  => 2007-323T08:37Z   Ordinal date and UTC of day (extended) 
%GW%V%uT%H%M%z => 2007W471T0837-0600  Week date and local time and difference from UTC (basic) 
%G-W%V-%uT%R%:z => 2007-W47-1T08:37-06:00 Week date and local time and difference from UTC (extended) 

Answer 2

如果你只是想包括秒數的小數，你可以使用DateTime#iso8601([n=0]) → string：

pry(main)> Time.now.iso8601(3) 
=> "2017-01-17T12:31:26.695+11:00"