method

to_f

rails latest stable - Class: DateTime

to_f()

public

Converts self to a floating-point number of seconds, including fractional microseconds, since the Unix epoch.

# File activesupport/lib/active_support/core_ext/date_time/conversions.rb, line 83
  def to_f
    seconds_since_unix_epoch.to_f + sec_fraction
  end