String date to date
Please read the documentation of the time.Parse:
The layout defines the format by showing how the reference time, defined to be
Mon Jan 2 15:04:05 -0700 MST 2006
would be interpreted if it were the value; it serves as an example of the input format. The same interpretation will then be made to the input string.
So the correct format is
t, err := time.Parse("2006-01-02", "2011-01-19")
In addition to using a literal 2006-01-02
time format, you reduce errors by creating a constant similar to how Go does it in the time
package.
The YYYY-MM-DD
format is defined as full-date
in RFC-3339 as follows (order adjusted):
full-date = date-fullyear "-" date-month "-" date-mday
date-fullyear = 4DIGIT
date-month = 2DIGIT ; 01-12
date-mday = 2DIGIT ; 01-28, 01-29, 01-30, 01-31 based on
; month/year
So you can create a constant like the following to go along with the built-in time.RFC3339
and time.RFC3339Nano
constants.
const RFC3339FullDate = "2006-01-02"
Then you can write the following:
t, err := time.Parse(RFC3339FullDate, "2011-01-19")
This is in the gotilla/time/timeutil
package, so you can write:
t, err := time.Parse(timeutil.RFC3339FullDate, "2011-01-19")
For reference, time/format.go
contains the following constants:
const (
ANSIC = "Mon Jan _2 15:04:05 2006"
UnixDate = "Mon Jan _2 15:04:05 MST 2006"
RubyDate = "Mon Jan 02 15:04:05 -0700 2006"
RFC822 = "02 Jan 06 15:04 MST"
RFC822Z = "02 Jan 06 15:04 -0700" // RFC822 with numeric zone
RFC850 = "Monday, 02-Jan-06 15:04:05 MST"
RFC1123 = "Mon, 02 Jan 2006 15:04:05 MST"
RFC1123Z = "Mon, 02 Jan 2006 15:04:05 -0700" // RFC1123 with numeric zone
RFC3339 = "2006-01-02T15:04:05Z07:00"
RFC3339Nano = "2006-01-02T15:04:05.999999999Z07:00"
Kitchen = "3:04PM"
// Handy time stamps.
Stamp = "Jan _2 15:04:05"
StampMilli = "Jan _2 15:04:05.000"
StampMicro = "Jan _2 15:04:05.000000"
StampNano = "Jan _2 15:04:05.000000000"
)