52 lines
1.5 KiB
Ruby
52 lines
1.5 KiB
Ruby
#
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# Copyright (C) 2011 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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module CustomValidations
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module ClassMethods
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def validates_as_url(*fields)
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fields.each do |field|
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validates_each(field.to_sym, :allow_nil => true) do |record, attr, value|
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begin
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value = value.strip
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raise ArgumentError if value.empty?
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uri = URI.parse(value)
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unless uri.scheme
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value = "http://#{value}"
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uri = URI.parse(value)
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end
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raise ArgumentError unless uri.host && %w(http https).include?(uri.scheme.downcase)
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record.url = value
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rescue URI::InvalidURIError, ArgumentError
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record.errors.add attr, 'is not a valid URL'
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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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def self.included(klass)
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if klass < ActiveRecord::Base
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klass.send :extend, ClassMethods
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end
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end
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end
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