118 lines
4.3 KiB
Ruby
118 lines
4.3 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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require 'pathname'
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require Pathname(__FILE__).dirname.expand_path + 'formats/email'
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require Pathname(__FILE__).dirname.expand_path + 'formats/url'
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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 FormatValidator < GenericValidator
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FORMATS = {}
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include CouchRest::Validation::Format::Email
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include CouchRest::Validation::Format::Url
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def initialize(field_name, options = {}, &b)
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super(field_name, options)
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@field_name, @options = field_name, options
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@options[:allow_nil] = false unless @options.has_key?(:allow_nil)
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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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return true if @options[:allow_nil] && value.nil?
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validation = @options[:as] || @options[:with]
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raise "No such predefined format '#{validation}'" if validation.is_a?(Symbol) && !FORMATS.has_key?(validation)
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validator = validation.is_a?(Symbol) ? FORMATS[validation][0] : validation
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valid = case validator
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when Proc then validator.call(value)
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when Regexp then value =~ validator
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else
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raise UnknownValidationFormat, "Can't determine how to validate #{target.class}##{field_name} with #{validator.inspect}"
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end
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return true if valid
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error_message = @options[:message] || ValidationErrors.default_error_message(:invalid, field_name)
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field = CouchRest.humanize(field_name)
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error_message = error_message.call(field, value) if error_message.respond_to?(:call)
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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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#class UnknownValidationFormat < StandardError; end
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end # class FormatValidator
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module ValidatesFormat
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##
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# Validates that the attribute is in the specified format. You may use the
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# :as (or :with, it's an alias) option to specify the pre-defined format
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# that you want to validate against. You may also specify your own format
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# via a Proc or Regexp passed to the the :as or :with options.
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#
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# @option :allow_nil<Boolean> true/false (default is true)
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# @option :as<Format, Proc, Regexp> the pre-defined format, Proc or Regexp to validate against
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# @option :with<Format, Proc, Regexp> an alias for :as
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#
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# @details [Pre-defined Formats]
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# :email_address (format is specified in DataMapper::Validation::Format::Email)
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# :url (format is specified in DataMapper::Validation::Format::Url)
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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 :email, String
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# property :zip_code, String
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#
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# validates_format :email, :as => :email_address
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# validates_format :zip_code, :with => /^\d{5}$/
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#
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# # a call to valid? will return false unless:
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# # email is formatted like an email address
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# # and
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# # zip_code is a string of 5 digits
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#
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def validates_format(*fields)
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opts = opts_from_validator_args(fields)
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add_validator_to_context(opts, fields, CouchRest::Validation::FormatValidator)
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end
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end # module ValidatesFormat
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end # module Validation
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end # module CouchRest
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