115 lines
4 KiB
Ruby
115 lines
4 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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# @since 0.9
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class RequiredFieldValidator < 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.validation_property_value(field_name)
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property = target.validation_property(field_name)
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return true if present?(value, property)
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error_message = @options[:message] || default_error(property)
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add_error(target, error_message, field_name)
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false
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end
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protected
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# Boolean property types are considered present if non-nil.
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# Other property types are considered present if non-blank.
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# Non-properties are considered present if non-blank.
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def present?(value, property)
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boolean_type?(property) ? !value.nil? : !value.blank?
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end
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def default_error(property)
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actual = boolean_type?(property) ? :nil : :blank
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ValidationErrors.default_error_message(actual, field_name)
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end
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# Is +property+ a boolean property?
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#
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# Returns true for Boolean, ParanoidBoolean, TrueClass, etc. properties.
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# Returns false for other property types.
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# Returns false for non-properties.
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def boolean_type?(property)
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property ? property.type == TrueClass : false
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end
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end # class RequiredFieldValidator
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module ValidatesPresent
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##
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# Validates that the specified attribute is present.
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#
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# For most property types "being present" is the same as being "not
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# blank" as determined by the attribute's #blank? method. However, in
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# the case of Boolean, "being present" means not nil; i.e. true or
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# false.
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#
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# @note
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# dm-core's support lib adds the blank? method to many classes,
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# @see lib/dm-core/support/blank.rb (dm-core) for more information.
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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 :required_attribute, String
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# property :another_required, String
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# property :yet_again, String
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#
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# validates_presence_of :required_attribute
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# validates_presence_of :another_required, :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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def validates_presence_of(*fields)
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opts = opts_from_validator_args(fields)
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add_validator_to_context(opts, fields, CouchRest::Validation::RequiredFieldValidator)
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end
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def validates_present(*fields)
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warn "[DEPRECATION] `validates_present` is deprecated. Please use `validates_presence_of` instead."
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validates_presence_of(*fields)
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end
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end # module ValidatesPresent
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end # module Validation
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end # module CouchRest
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