75 lines
2.5 KiB
Ruby
75 lines
2.5 KiB
Ruby
# Extracted from dm-validations 0.9.10
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#
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# Copyright (c) 2007 Guy van den Berg
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#
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# Permission is hereby granted, free of charge, to any person obtaining
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# a copy of this software and associated documentation files (the
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# "Software"), to deal in the Software without restriction, including
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# without limitation the rights to use, copy, modify, merge, publish,
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# distribute, sublicense, and/or sell copies of the Software, and to
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# permit persons to whom the Software is furnished to do so, subject to
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# the following conditions:
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#
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# The above copyright notice and this permission notice shall be
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# included in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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module CouchRest
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module Validation
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##
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#
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# @author Guy van den Berg
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class AbsentFieldValidator < GenericValidator
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def initialize(field_name, options={})
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super
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@field_name, @options = field_name, options
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end
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def call(target)
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value = target.send(field_name)
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return true if (value.nil? || (value.respond_to?(:empty?) && value.empty?))
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error_message = @options[:message] || ValidationErrors.default_error_message(:absent, field_name)
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add_error(target, error_message, field_name)
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return false
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end
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end # class AbsentFieldValidator
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module ValidatesAbsent
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##
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#
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# @example [Usage]
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#
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# class Page
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#
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# property :unwanted_attribute, String
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# property :another_unwanted, String
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# property :yet_again, String
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#
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# validates_absent :unwanted_attribute
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# validates_absent :another_unwanted, :yet_again
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#
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# # a call to valid? will return false unless
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# # all three attributes are blank
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# end
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#
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def validates_absent(*fields)
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opts = opts_from_validator_args(fields)
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add_validator_to_context(opts, fields, CouchRest::Validation::AbsentFieldValidator)
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end
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end # module ValidatesAbsent
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end # module Validation
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end # module CouchRest
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