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(Ruby) JSON Date Parsing

Demonstrates how to parse date/time strings from JSON.

Note: This example uses the DtOf and DateOf methods introduced in Chilkat v9.5.0.73

Chilkat Ruby Downloads

Ruby Library for Windows, MacOS, Linux, Alpine Linux

require 'chilkat'



json = Chilkat::CkJsonObject.new()
json.put_EmitCompact(false)

# First, let's create JSON containing some date/time strings.
json.UpdateString("test.timestamp","2018-01-30T20:35:00Z")
json.UpdateString("test.rfc822","Tue, 24 Apr 2018 08:47:03 -0500")
json.UpdateString("test.dateStrings[0]","2018-01-30T20:35:00Z")
json.UpdateString("test.dateStrings[1]","Tue, 24 Apr 2018 08:47:03 -0500")
json.UpdateNumber("test.StartLoggingTime","1446834998.695")
json.UpdateNumber("test.Expiration","1442877512.0")
json.UpdateInt("test.StartTime",1518867432)

print json.emit() + "\n";

# We've built the following JSON:

# {
#   "test": {
#     "timestamp": "2018-01-30T20:35:00Z",
#     "rfc822": "Tue, 24 Apr 2018 08:47:03 -0500",
#     "dateStrings": [
#       "2018-01-30T20:35:00Z",
#       "Tue, 24 Apr 2018 08:47:03 -0500"
#     ],
#     "StartLoggingTime": 1446834998.695,
#     "Expiration": 1442877512.0,
#     "StartTime": 1518867432
#   }
# }

# Use the DateOf and DtOf methods to load Chilkat date/time objects with the date/time values.
# The CkDateTime object is primarily for loading a date/time from numerous formats, and then getting
# the date/time in various formats.  Thus, it's primarly for date/time format conversion.
# The DtObj object holds a date/time where the individual components (day, month, year, hour, minutes, etc.) are 
# immediately accessible as integers.
dateTime = Chilkat::CkDateTime.new()
dt = Chilkat::CkDtObj.new()
getAsLocal = false

# Load the date/time at test.timestamp into the dateTime object.
success = json.DateOf("test.timestamp",dateTime)
print dateTime.getAsTimestamp(getAsLocal) + "\n";
print dateTime.GetAsUnixTime(false).to_s() + "\n";
print dateTime.getAsRfc822(getAsLocal) + "\n";

success = json.DateOf("test.rfc822",dateTime)
print dateTime.getAsTimestamp(getAsLocal) + "\n";

json.put_I(0)
success = json.DateOf("test.dateStrings[i]",dateTime)
print dateTime.getAsTimestamp(getAsLocal) + "\n";

json.put_I(1)
success = json.DateOf("test.dateStrings[i]",dateTime)
print dateTime.getAsTimestamp(getAsLocal) + "\n";

success = json.DateOf("test.StartLoggingTime",dateTime)
print dateTime.getAsTimestamp(getAsLocal) + "\n";

success = json.DateOf("test.Expiration",dateTime)
print dateTime.getAsTimestamp(getAsLocal) + "\n";

success = json.DateOf("test.StartTime",dateTime)
print dateTime.getAsTimestamp(getAsLocal) + "\n";

# Output so far:

# 	2018-01-30T20:35:00Z
# 	1517344500
# 	Tue, 30 Jan 2018 20:35:00 GMT
# 	2018-04-24T13:47:03Z
# 	2018-01-30T20:35:00Z
# 	2018-04-24T13:47:03Z
# 	2015-11-07T00:36:38Z
# 	2015-09-22T04:18:32Z
# 	2018-02-17T17:37:12Z

# Now load the date/time strings into the dt object:
success = json.DtOf("test.timestamp",getAsLocal,dt)
print "month=" + dt.get_Month().to_s() + ", day=" + dt.get_Day().to_s() + ", year=" + dt.get_Year().to_s() + ", hour=" + 
    dt.get_Hour().to_s() + ", minute=" + dt.get_Minute().to_s() + "\n";

success = json.DtOf("test.rfc822",getAsLocal,dt)
print "month=" + dt.get_Month().to_s() + ", day=" + dt.get_Day().to_s() + ", year=" + dt.get_Year().to_s() + ", hour=" + 
    dt.get_Hour().to_s() + ", minute=" + dt.get_Minute().to_s() + "\n";

json.put_I(0)
success = json.DtOf("test.dateStrings[i]",getAsLocal,dt)
print "month=" + dt.get_Month().to_s() + ", day=" + dt.get_Day().to_s() + ", year=" + dt.get_Year().to_s() + ", hour=" + 
    dt.get_Hour().to_s() + ", minute=" + dt.get_Minute().to_s() + "\n";

json.put_I(1)
success = json.DtOf("test.dateStrings[i]",getAsLocal,dt)
print "month=" + dt.get_Month().to_s() + ", day=" + dt.get_Day().to_s() + ", year=" + dt.get_Year().to_s() + ", hour=" + 
    dt.get_Hour().to_s() + ", minute=" + dt.get_Minute().to_s() + "\n";

success = json.DtOf("test.StartLoggingTime",getAsLocal,dt)
print "month=" + dt.get_Month().to_s() + ", day=" + dt.get_Day().to_s() + ", year=" + dt.get_Year().to_s() + ", hour=" + 
    dt.get_Hour().to_s() + ", minute=" + dt.get_Minute().to_s() + "\n";

success = json.DtOf("test.Expiration",getAsLocal,dt)
print "month=" + dt.get_Month().to_s() + ", day=" + dt.get_Day().to_s() + ", year=" + dt.get_Year().to_s() + ", hour=" + 
    dt.get_Hour().to_s() + ", minute=" + dt.get_Minute().to_s() + "\n";

success = json.DtOf("test.StartTime",getAsLocal,dt)
print "month=" + dt.get_Month().to_s() + ", day=" + dt.get_Day().to_s() + ", year=" + dt.get_Year().to_s() + ", hour=" + 
    dt.get_Hour().to_s() + ", minute=" + dt.get_Minute().to_s() + "\n";

# Output:

# month=1, day=30, year=2018, hour=20, minute=35
# month=4, day=24, year=2018, hour=13, minute=47
# month=1, day=30, year=2018, hour=20, minute=35
# month=4, day=24, year=2018, hour=13, minute=47
# month=11, day=6, year=2015, hour=18, minute=36
# month=9, day=21, year=2015, hour=23, minute=18
# month=2, day=17, year=2018, hour=11, minute=37

 

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