54 lines
1.7 KiB
Ruby
54 lines
1.7 KiB
Ruby
#
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# Copyright (C) 2014 Instructure, Inc.
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#
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# This file is part of Canvas.
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#
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# Canvas is free software: you can redistribute it and/or modify it under
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# the terms of the GNU Affero General Public License as published by the Free
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# Software Foundation, version 3 of the License.
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#
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# Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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# A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
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# details.
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#
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# You should have received a copy of the GNU Affero General Public License along
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# with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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class UsageRights < ActiveRecord::Base
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include ContentLicenses
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USE_JUSTIFICATIONS = %w(own_copyright public_domain used_by_permission fair_use creative_commons).freeze
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belongs_to :context, polymorphic: true
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attr_accessible :legal_copyright, :license, :use_justification
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before_validation :infer_license
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validates_inclusion_of :context_type, in: %w(Course Group User)
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validates_inclusion_of :use_justification, in: USE_JUSTIFICATIONS
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validates_inclusion_of :license, in: licenses.keys, allow_nil: true
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def infer_license
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if license.blank?
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self.license = case use_justification
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when 'public_domain'
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'public_domain'
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when 'creative_commons'
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'cc_by_nc_nd' # assume the most restrictive CC license unless told otherwise
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else
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'private' # default to private (copyrighted)
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end
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end
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end
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def license_name
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self.class.licenses[license || 'private'][:readable_license]
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end
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def license_url
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self.class.licenses[license || 'private'][:license_url]
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end
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end
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