Redmine/lib/redmine/core_ext/date/calculations.rb

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# Redmine - project management software
# Copyright (C) 2006-2014 Jean-Philippe Lang
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
module Redmine #:nodoc:
module CoreExtensions #:nodoc:
module Date #:nodoc:
# Custom date calculations
module Calculations
# Returns difference with specified date in months
def months_ago(date = self.class.today)
(date.year - self.year)*12 + (date.month - self.month)
end
# Returns difference with specified date in weeks
def weeks_ago(date = self.class.today)
(date.year - self.year)*52 + (date.cweek - self.cweek)
end
end
end
end
end