245 lines
8.5 KiB
Ruby
245 lines
8.5 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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class Object
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def validatable?
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false
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end
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end
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require 'pathname'
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dir = File.join(Pathname(__FILE__).dirname.expand_path, 'validation')
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require File.join(dir, 'validation_errors')
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require File.join(dir, 'contextual_validators')
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require File.join(dir, 'auto_validate')
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require File.join(dir, 'validators', 'generic_validator')
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require File.join(dir, 'validators', 'required_field_validator')
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require File.join(dir, 'validators', 'absent_field_validator')
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require File.join(dir, 'validators', 'format_validator')
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require File.join(dir, 'validators', 'length_validator')
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require File.join(dir, 'validators', 'numeric_validator')
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require File.join(dir, 'validators', 'method_validator')
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require File.join(dir, 'validators', 'confirmation_validator')
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module CouchRest
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module Validation
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def self.included(base)
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base.extlib_inheritable_accessor(:auto_validation)
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base.class_eval <<-EOS, __FILE__, __LINE__ + 1
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# Callbacks
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define_callbacks :validate
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# Turn off auto validation by default
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self.auto_validation ||= false
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# Force the auto validation for the class properties
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# This feature is still not fully ported over,
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# test are lacking, so please use with caution
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def self.auto_validate!
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self.auto_validation = true
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end
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# share the validations with subclasses
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def self.inherited(subklass)
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self.validators.contexts.each do |k, v|
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subklass.validators.contexts[k] = v.dup
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end
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super
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end
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EOS
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base.extend(ClassMethods)
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base.class_eval <<-EOS, __FILE__, __LINE__ + 1
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define_callbacks :validate
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if method_defined?(:_run_save_callbacks)
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set_callback :save, :before, :check_validations
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end
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EOS
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base.class_eval <<-RUBY_EVAL, __FILE__, __LINE__ + 1
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def self.define_property(name, options={}, &block)
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property = super
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auto_generate_validations(property) unless property.nil?
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end
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RUBY_EVAL
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end
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# Ensures the object is valid for the context provided, and otherwise
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# throws :halt and returns false.
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#
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def check_validations(context = :default)
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throw(:halt, false) unless context.nil? || valid?(context)
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end
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# Return the ValidationErrors
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#
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def errors
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@errors ||= ValidationErrors.new
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end
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# Mark this resource as validatable. When we validate associations of a
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# resource we can check if they respond to validatable? before trying to
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# recursivly validate them
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#
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def validatable?
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true
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end
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# Alias for valid?(:default)
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#
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def valid_for_default?
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valid?(:default)
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end
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# Check if a resource is valid in a given context
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#
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def valid?(context = :default)
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recursive_valid?(self, context, true)
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end
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# checking on casted objects
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def validate_casted_arrays
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result = true
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array_casted_properties = self.class.properties.select { |property| property.casted && property.type.instance_of?(Array) }
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array_casted_properties.each do |property|
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casted_values = self.send(property.name)
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next unless casted_values.is_a?(Array) && casted_values.first.respond_to?(:valid?)
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casted_values.each do |value|
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result = (result && value.valid?) if value.respond_to?(:valid?)
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end
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end
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result
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end
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# Do recursive validity checking
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#
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def recursive_valid?(target, context, state)
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valid = state
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target.each do |key, prop|
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if prop.is_a?(Array)
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prop.each do |item|
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if item.validatable?
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valid = recursive_valid?(item, context, valid) && valid
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end
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end
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elsif prop.validatable?
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valid = recursive_valid?(prop, context, valid) && valid
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end
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end
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target._run_validate_callbacks do
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target.class.validators.execute(context, target) && valid
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end
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end
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def validation_property_value(name)
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self.respond_to?(name, true) ? self.send(name) : nil
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end
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# Get the corresponding Object property, if it exists.
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def validation_property(field_name)
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properties.find{|p| p.name == field_name}
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end
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module ClassMethods
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include CouchRest::Validation::ValidatesPresent
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include CouchRest::Validation::ValidatesAbsent
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include CouchRest::Validation::ValidatesIsConfirmed
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# include CouchRest::Validation::ValidatesIsPrimitive
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# include CouchRest::Validation::ValidatesIsAccepted
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include CouchRest::Validation::ValidatesFormat
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include CouchRest::Validation::ValidatesLength
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# include CouchRest::Validation::ValidatesWithin
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include CouchRest::Validation::ValidatesIsNumber
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include CouchRest::Validation::ValidatesWithMethod
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# include CouchRest::Validation::ValidatesWithBlock
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# include CouchRest::Validation::ValidatesIsUnique
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include CouchRest::Validation::AutoValidate
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# Return the set of contextual validators or create a new one
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#
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def validators
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@validations ||= ContextualValidators.new
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end
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# Clean up the argument list and return a opts hash, including the
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# merging of any default opts. Set the context to default if none is
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# provided. Also allow :context to be aliased to :on, :when & group
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#
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def opts_from_validator_args(args, defaults = nil)
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opts = args.last.kind_of?(Hash) ? args.pop : {}
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context = :default
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context = opts[:context] if opts.has_key?(:context)
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context = opts.delete(:on) if opts.has_key?(:on)
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context = opts.delete(:when) if opts.has_key?(:when)
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context = opts.delete(:group) if opts.has_key?(:group)
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opts[:context] = context
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opts.merge!(defaults) unless defaults.nil?
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opts
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end
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# Given a new context create an instance method of
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# valid_for_<context>? which simply calls valid?(context)
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# if it does not already exist
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#
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def create_context_instance_methods(context)
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name = "valid_for_#{context.to_s}?" # valid_for_signup?
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if !self.instance_methods.include?(name)
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class_eval <<-EOS, __FILE__, __LINE__ + 1
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def #{name} # def valid_for_signup?
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valid?('#{context.to_s}'.to_sym) # valid?('signup'.to_sym)
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end # end
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EOS
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end
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end
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# Create a new validator of the given klazz and push it onto the
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# requested context for each of the attributes in the fields list
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#
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def add_validator_to_context(opts, fields, klazz)
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fields.each do |field|
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validator = klazz.new(field.to_sym, opts)
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if opts[:context].is_a?(Symbol)
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unless validators.context(opts[:context]).include?(validator)
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validators.context(opts[:context]) << validator
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create_context_instance_methods(opts[:context])
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end
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elsif opts[:context].is_a?(Array)
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opts[:context].each do |c|
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unless validators.context(c).include?(validator)
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validators.context(c) << validator
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create_context_instance_methods(c)
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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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end # module ClassMethods
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end # module Validation
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end # module CouchRest
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