DevTut

# Time

# How to use the strftime method

Converting a time to a string is a pretty common thing to do in Ruby. strftime is the method one would use to convert time to a string.

Here are some examples:

Time.now.strftime("%Y-%m-d %H:%M:S") #=> "2016-07-27 08:45:42"

This can be simplified even further

Time.now.strftime("%F %X")  #=> "2016-07-27 08:45:42"

# Creating time objects

Get current time:

Time.now
Time.new # is equivalent if used with no parameters

Get specific time:

Time.new(2010, 3, 10) #10 March 2010 (Midnight)
Time.new(2015, 5, 3, 10, 14) #10:14 AM on 3 May 2015 
Time.new(2050, "May", 3, 21, 8, 16, "+10:00") #09:08:16 PM on 3 May 2050

To convert a time to epoch (opens new window) you can use the to_i method:

Time.now.to_i # => 1478633386

You can also convert back from epoch to Time using the at method:

Time.at(1478633386) # => 2016-11-08 17:29:46 -0200

# Syntax

  • Time.now
  • Time.new([year], [month], [day], [hour], [min], [sec], [utc_offset])

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