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88 lines
2.8 KiB
88 lines
2.8 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) 2012-2015 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) 2006-2013 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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require 'reform'
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require 'reform/form/active_model/model_validations'
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module API
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module Contracts
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class ModelContract < Reform::Contract
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def self.writable_attributes
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@writable_attributes ||= []
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end
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def self.attribute_validations
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@attribute_validations ||= []
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end
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def self.attribute(*attributes, &block)
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writable_attributes.concat attributes.map(&:to_s)
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if block
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attribute_validations << block
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end
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end
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def writable_attributes
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collect_ancestor_attributes(:writable_attributes)
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end
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validate :readonly_attributes_unchanged
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validate :run_attribute_validations
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private
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def readonly_attributes_unchanged
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changed_attributes = model.changed - writable_attributes
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errors.add :error_readonly, changed_attributes unless changed_attributes.empty?
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end
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def run_attribute_validations
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attribute_validations.each { |validation| instance_exec(&validation) }
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end
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def attribute_validations
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collect_ancestor_attributes(:attribute_validations)
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end
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# All of the contract information across the entire inheritance hierarchy has to be
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# considered in order to properly enforce them.
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def collect_ancestor_attributes(attribute_to_collect)
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attributes = []
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klass = self.class
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while klass != ModelContract
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# Collect all the attribute_to_collect from ancestors
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attributes += klass.send(attribute_to_collect)
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klass = klass.superclass
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end
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attributes.uniq
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end
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end
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end
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end
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