52 lines
1.5 KiB
Ruby
52 lines
1.5 KiB
Ruby
|
#
|
||
|
|
# Copyright (C) 2011 Instructure, Inc.
|
||
|
|
#
|
||
|
|
# This file is part of Canvas.
|
||
|
|
#
|
||
|
|
# Canvas is free software: you can redistribute it and/or modify it under
|
||
|
|
# the terms of the GNU Affero General Public License as published by the Free
|
||
|
|
# Software Foundation, version 3 of the License.
|
||
|
|
#
|
||
|
|
# Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
|
||
|
|
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
|
||
|
|
# A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
|
||
|
|
# details.
|
||
|
|
#
|
||
|
|
# You should have received a copy of the GNU Affero General Public License along
|
||
|
|
# with this program. If not, see <http://www.gnu.org/licenses/>.
|
||
|
|
#
|
||
|
|
|
||
|
|
module CustomValidations
|
||
|
|
|
||
|
|
module ClassMethods
|
||
|
|
|
||
|
|
def validates_as_url(*fields)
|
||
|
|
fields.each do |field|
|
||
|
|
validates_each(field.to_sym, :allow_nil => true) do |record, attr, value|
|
||
|
|
begin
|
||
|
|
value = value.strip
|
||
|
|
raise ArgumentError if value.empty?
|
||
|
|
uri = URI.parse(value)
|
||
|
|
unless uri.scheme
|
||
|
|
value = "http://#{value}"
|
||
|
|
uri = URI.parse(value)
|
||
|
|
end
|
||
|
|
raise ArgumentError unless uri.host && %w(http https).include?(uri.scheme.downcase)
|
||
|
|
record.url = value
|
||
|
|
rescue URI::InvalidURIError, ArgumentError
|
||
|
|
record.errors.add attr, 'is not a valid URL'
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
end
|
||
|
|
|
||
|
|
def self.included(klass)
|
||
|
|
if klass < ActiveRecord::Base
|
||
|
|
klass.send :extend, ClassMethods
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
end
|