48 lines
1.4 KiB
Ruby
48 lines
1.4 KiB
Ruby
# Redmine - project management software
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# Copyright (C) 2006-2014 Jean-Philippe Lang
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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module Redmine
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module SubclassFactory
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def self.included(base)
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base.extend ClassMethods
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end
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module ClassMethods
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def get_subclass(class_name)
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klass = nil
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begin
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klass = class_name.to_s.classify.constantize
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rescue
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# invalid class name
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end
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unless subclasses.include? klass
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klass = nil
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end
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klass
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end
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# Returns an instance of the given subclass name
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def new_subclass_instance(class_name, *args)
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klass = get_subclass(class_name)
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if klass
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klass.new(*args)
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end
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end
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end
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end
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end
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