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73 lines
2.2 KiB
73 lines
2.2 KiB
#-- encoding: UTF-8
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#-- copyright
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# OpenProject is a project management system.
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# Copyright (C) 2012-2017 the OpenProject Foundation (OPF)
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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 version 3.
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#
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# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
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# Copyright (C) 2006-2017 Jean-Philippe Lang
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# Copyright (C) 2010-2013 the ChiliProject Team
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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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#
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# See doc/COPYRIGHT.rdoc for more details.
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#++
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class CustomValue::FormatStrategy
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attr_reader :custom_value
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delegate :custom_field, :value, to: :custom_value
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def initialize(custom_value)
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@custom_value = custom_value
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end
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def value_present?
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!value.blank?
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end
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# Returns the value of the CustomValue in a typed fashion (i.e. not as the string
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# that is used for representation in the database)
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def typed_value
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raise 'SubclassResponsibility'
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end
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# Returns the value of the CustomValue formatted to a string
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# representation.
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def formatted_value
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value.to_s
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end
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# Parses the value to
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# 1) have a unified representation for different inputs
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# 2) memoize typed values (if the subclass descides to do so
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def parse_value(val)
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self.memoized_typed_value = nil
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val
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end
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# Validates the type of the custom field and returns a symbol indicating the validation error
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# if an error occurred; returns nil if no error occurred
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def validate_type_of_value
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raise 'SubclassResponsibility'
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end
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private
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attr_accessor :memoized_typed_value
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end
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