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Rails 2.1

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Update to Rails 2.1 final.
This commit is contained in:
Jacques Distler 2008-06-02 01:35:38 -05:00
parent fd554cce90
commit 516d6dfac0
257 changed files with 4058 additions and 1933 deletions
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4
vendor/rails/activemodel/lib/active_model/base.rb vendored Normal file
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module ActiveModel
class Base
end
end

5
vendor/rails/activemodel/lib/active_model/callbacks.rb vendored Normal file
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module ActiveModel
module Callbacks
end
end

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vendor/rails/activemodel/lib/active_model/deprecated_error_methods.rb vendored Normal file
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module ActiveModel
module DeprecatedErrorMethods
def on(attribute)
ActiveSupport::Deprecation.warn "Errors#on have been deprecated, use Errors#[] instead"
self[attribute]
end
def on_base
ActiveSupport::Deprecation.warn "Errors#on_base have been deprecated, use Errors#[:base] instead"
on(:base)
end
def add(attribute, msg = Errors.default_error_messages[:invalid])
ActiveSupport::Deprecation.warn "Errors#add(attribute, msg) has been deprecated, use Errors#[attribute] << msg instead"
self[attribute] << msg
end
def add_to_base(msg)
ActiveSupport::Deprecation.warn "Errors#add_to_base(msg) has been deprecated, use Errors#[:base] << msg instead"
self[:base] << msg
end
def invalid?(attribute)
ActiveSupport::Deprecation.warn "Errors#invalid?(attribute) has been deprecated, use Errors#[attribute].any? instead"
self[attribute].any?
end
def full_messages
ActiveSupport::Deprecation.warn "Errors#full_messages has been deprecated, use Errors#to_a instead"
to_a
end
def each_full
ActiveSupport::Deprecation.warn "Errors#each_full has been deprecated, use Errors#to_a.each instead"
to_a.each { |error| yield error }
end
end
end

80
vendor/rails/activemodel/lib/active_model/errors.rb vendored Normal file
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module ActiveModel
class Errors < Hash
include DeprecatedErrorMethods
@@default_error_messages = {
:inclusion => "is not included in the list",
:exclusion => "is reserved",
:invalid => "is invalid",
:confirmation => "doesn't match confirmation",
:accepted => "must be accepted",
:empty => "can't be empty",
:blank => "can't be blank",
:too_long => "is too long (maximum is %d characters)",
:too_short => "is too short (minimum is %d characters)",
:wrong_length => "is the wrong length (should be %d characters)",
:taken => "has already been taken",
:not_a_number => "is not a number",
:greater_than => "must be greater than %d",
:greater_than_or_equal_to => "must be greater than or equal to %d",
:equal_to => "must be equal to %d",
:less_than => "must be less than %d",
:less_than_or_equal_to => "must be less than or equal to %d",
:odd => "must be odd",
:even => "must be even"
}
# Holds a hash with all the default error messages that can be replaced by your own copy or localizations.
cattr_accessor :default_error_messages
alias_method :get, :[]
alias_method :set, :[]=
def [](attribute)
if errors = get(attribute.to_sym)
errors.size == 1 ? errors.first : errors
else
set(attribute.to_sym, [])
end
end
def []=(attribute, error)
self[attribute.to_sym] << error
end
def each
each_key do |attribute|
self[attribute].each { |error| yield attribute, error }
end
end
def size
values.flatten.size
end
def to_a
inject([]) do |errors_with_attributes, (attribute, errors)|
if error.blank?
errors_with_attributes
else
if attr == :base
errors_with_attributes << error
else
errors_with_attributes << (attribute.to_s.humanize + " " + error)
end
end
end
end
def to_xml(options={})
options[:root] ||= "errors"
options[:indent] ||= 2
options[:builder] ||= Builder::XmlMarkup.new(:indent => options[:indent])
options[:builder].instruct! unless options.delete(:skip_instruct)
options[:builder].errors do |e|
to_a.each { |error| e.error(error) }
end
end
end
end

100
vendor/rails/activemodel/lib/active_model/observing.rb vendored Normal file
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require 'observer'
module ActiveModel
module Observing
module ClassMethods
def observers
@observers ||= []
end
def observers=(*values)
@observers = values.flatten
end
def instantiate_observers
observers.each { |o| instantiate_observer(o) }
end
protected
def instantiate_observer(observer)
# string/symbol
if observer.respond_to?(:to_sym)
observer = observer.to_s.camelize.constantize.instance
elsif observer.respond_to?(:instance)
observer.instance
else
raise ArgumentError, "#{observer} must be a lowercase, underscored class name (or an instance of the class itself) responding to the instance method. Example: Person.observers = :big_brother # calls BigBrother.instance"
end
end
# Notify observers when the observed class is subclassed.
def inherited(subclass)
super
changed
notify_observers :observed_class_inherited, subclass
end
end
def self.included(receiver)
receiver.extend Observable, ClassMethods
end
end
class Observer
include Singleton
attr_writer :observed_classes
class << self
attr_accessor :models
# Attaches the observer to the supplied model classes.
def observe(*models)
@models = models.flatten
@models.collect! { |model| model.respond_to?(:to_sym) ? model.to_s.camelize.constantize : model }
end
def observed_class_name
@observed_class_name ||=
if guessed_name = name.scan(/(.*)Observer/)[0]
@observed_class_name = guessed_name[0]
end
end
# The class observed by default is inferred from the observer's class name:
# assert_equal [Person], PersonObserver.observed_class
def observed_class
if observed_class_name
observed_class_name.constantize
else
nil
end
end
end
# Start observing the declared classes and their subclasses.
def initialize
self.observed_classes = self.class.models if self.class.models
observed_classes.each { |klass| add_observer! klass }
end
# Send observed_method(object) if the method exists.
def update(observed_method, object) #:nodoc:
send(observed_method, object) if respond_to?(observed_method)
end
# Special method sent by the observed class when it is inherited.
# Passes the new subclass.
def observed_class_inherited(subclass) #:nodoc:
self.class.observe(observed_classes + [subclass])
add_observer!(subclass)
end
protected
def observed_classes
@observed_classes ||= [self.class.observed_class]
end
def add_observer!(klass)
klass.add_observer(self)
end
end
end

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vendor/rails/activemodel/lib/active_model/validations.rb vendored Normal file
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module ActiveModel
module Validations
def self.included(base) # :nodoc:
base.extend(ClassMethods)
base.send!(:include, ActiveSupport::Callbacks)
base.define_callbacks :validate, :validate_on_create, :validate_on_update
end
module ClassMethods
DEFAULT_VALIDATION_OPTIONS = { :on => :save, :allow_nil => false, :allow_blank => false, :message => nil }.freeze
# Adds a validation method or block to the class. This is useful when
# overriding the +validate+ instance method becomes too unwieldly and
# you're looking for more descriptive declaration of your validations.
#
# This can be done with a symbol pointing to a method:
#
# class Comment < ActiveRecord::Base
# validate :must_be_friends
#
# def must_be_friends
# errors.add_to_base("Must be friends to leave a comment") unless commenter.friend_of?(commentee)
# end
# end
#
# Or with a block which is passed the current record to be validated:
#
# class Comment < ActiveRecord::Base
# validate do |comment|
# comment.must_be_friends
# end
#
# def must_be_friends
# errors.add_to_base("Must be friends to leave a comment") unless commenter.friend_of?(commentee)
# end
# end
#
# This usage applies to +validate_on_create+ and +validate_on_update as well+.
#
# Validates each attribute against a block.
#
# class Person < ActiveRecord::Base
# validates_each :first_name, :last_name do |record, attr, value|
# record.errors.add attr, 'starts with z.' if value[0] == ?z
# end
# end
#
# Options:
# * <tt>:on</tt> - Specifies when this validation is active (default is <tt>:save</tt>, other options <tt>:create</tt>, <tt>:update</tt>)
# * <tt>:allow_nil</tt> - Skip validation if attribute is +nil+.
# * <tt>:allow_blank</tt> - Skip validation if attribute is blank.
# * <tt>:if</tt> - Specifies a method, proc or string to call to determine if the validation should
# occur (e.g. <tt>:if => :allow_validation</tt>, or <tt>:if => Proc.new { |user| user.signup_step > 2 }</tt>). The
# method, proc or string should return or evaluate to a true or false value.
# * <tt>:unless</tt> - Specifies a method, proc or string to call to determine if the validation should
# not occur (e.g. <tt>:unless => :skip_validation</tt>, or <tt>:unless => Proc.new { |user| user.signup_step <= 2 }</tt>). The
# method, proc or string should return or evaluate to a true or false value.
def validates_each(*attrs)
options = attrs.extract_options!.symbolize_keys
attrs = attrs.flatten
# Declare the validation.
send(validation_method(options[:on] || :save), options) do |record|
attrs.each do |attr|
value = record.send(attr)
next if (value.nil? && options[:allow_nil]) || (value.blank? && options[:allow_blank])
yield record, attr, value
end
end
end
private
def validation_method(on)
case on
when :save then :validate
when :create then :validate_on_create
when :update then :validate_on_update
end
end
end
# Returns the Errors object that holds all information about attribute error messages.
def errors
@errors ||= Errors.new
end
# Runs all the specified validations and returns true if no errors were added otherwise false.
def valid?
errors.clear
run_callbacks(:validate)
if responds_to?(:validate)
ActiveSupport::Deprecations.warn "Base#validate has been deprecated, please use Base.validate :method instead"
validate
end
if new_record?
run_callbacks(:validate_on_create)
if responds_to?(:validate_on_create)
ActiveSupport::Deprecations.warn(
"Base#validate_on_create has been deprecated, please use Base.validate_on_create :method instead")
validate_on_create
end
else
run_callbacks(:validate_on_update)
if responds_to?(:validate_on_update)
ActiveSupport::Deprecations.warn(
"Base#validate_on_update has been deprecated, please use Base.validate_on_update :method instead")
validate_on_update
end
end
errors.empty?
end
end
end
Dir[File.dirname(__FILE__) + "/validations/*.rb"].sort.each do |path|
filename = File.basename(path)
require "active_model/validations/#{filename}"
end

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vendor/rails/activemodel/lib/active_model/validations/acceptance.rb vendored Normal file
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module ActiveModel
module Validations
module ClassMethods
# Encapsulates the pattern of wanting to validate the acceptance of a terms of service check box (or similar agreement). Example:
#
# class Person < ActiveRecord::Base
# validates_acceptance_of :terms_of_service
# validates_acceptance_of :eula, :message => "must be abided"
# end
#
# If the database column does not exist, the <tt>:terms_of_service</tt> attribute is entirely virtual. This check is
# performed only if <tt>:terms_of_service</tt> is not +nil+ and by default on save.
#
# Configuration options:
# * <tt>:message</tt> - A custom error message (default is: "must be accepted")
# * <tt>:on</tt> - Specifies when this validation is active (default is <tt>:save</tt>, other options <tt>:create</tt>, <tt>:update</tt>)
# * <tt>:allow_nil</tt> - Skip validation if attribute is +nil+. (default is +true+)
# * <tt>:accept</tt> - Specifies value that is considered accepted. The default value is a string "1", which
# makes it easy to relate to an HTML checkbox. This should be set to +true+ if you are validating a database
# column, since the attribute is typecasted from "1" to +true+ before validation.
# * <tt>:if</tt> - Specifies a method, proc or string to call to determine if the validation should
# occur (e.g. <tt>:if => :allow_validation</tt>, or <tt>:if => Proc.new { |user| user.signup_step > 2 }</tt>). The
# method, proc or string should return or evaluate to a true or false value.
# * <tt>:unless</tt> - Specifies a method, proc or string to call to determine if the validation should
# not occur (e.g. <tt>:unless => :skip_validation</tt>, or <tt>:unless => Proc.new { |user| user.signup_step <= 2 }</tt>). The
# method, proc or string should return or evaluate to a true or false value.
def validates_acceptance_of(*attr_names)
configuration = { :message => ActiveRecord::Errors.default_error_messages[:accepted], :on => :save, :allow_nil => true, :accept => "1" }
configuration.update(attr_names.extract_options!)
db_cols = begin
column_names
rescue ActiveRecord::StatementInvalid
[]
end
names = attr_names.reject { |name| db_cols.include?(name.to_s) }
attr_accessor(*names)
validates_each(attr_names,configuration) do |record, attr_name, value|
record.errors.add(attr_name, configuration[:message]) unless value == configuration[:accept]
end
end
end
end
end

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vendor/rails/activemodel/lib/active_model/validations/associated.rb vendored Normal file
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module ActiveModel
module Validations
module ClassMethods
# Validates whether the associated object or objects are all valid themselves. Works with any kind of association.
#
# class Book < ActiveRecord::Base
# has_many :pages
# belongs_to :library
#
# validates_associated :pages, :library
# end
#
# Warning: If, after the above definition, you then wrote:
#
# class Page < ActiveRecord::Base
# belongs_to :book
#
# validates_associated :book
# end
#
# ...this would specify a circular dependency and cause infinite recursion.
#
# NOTE: This validation will not fail if the association hasn't been assigned. If you want to ensure that the association
# is both present and guaranteed to be valid, you also need to use +validates_presence_of+.
#
# Configuration options:
# * <tt>:message</tt> - A custom error message (default is: "is invalid")
# * <tt>:on</tt> - Specifies when this validation is active (default is <tt>:save</tt>, other options <tt>:create</tt>, <tt>:update</tt>)
# * <tt>:if</tt> - Specifies a method, proc or string to call to determine if the validation should
# occur (e.g. <tt>:if => :allow_validation</tt>, or <tt>:if => Proc.new { |user| user.signup_step > 2 }</tt>). The
# method, proc or string should return or evaluate to a true or false value.
# * <tt>:unless</tt> - Specifies a method, proc or string to call to determine if the validation should
# not occur (e.g. <tt>:unless => :skip_validation</tt>, or <tt>:unless => Proc.new { |user| user.signup_step <= 2 }</tt>). The
# method, proc or string should return or evaluate to a true or false value.
def validates_associated(*attr_names)
configuration = { :message => ActiveRecord::Errors.default_error_messages[:invalid], :on => :save }
configuration.update(attr_names.extract_options!)
validates_each(attr_names, configuration) do |record, attr_name, value|
record.errors.add(attr_name, configuration[:message]) unless
(value.is_a?(Array) ? value : [value]).inject(true) { |v, r| (r.nil? || r.valid?) && v }
end
end
end
end
end

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vendor/rails/activemodel/lib/active_model/validations/confirmation.rb vendored Normal file
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module ActiveModel
module Validations
module ClassMethods
# Encapsulates the pattern of wanting to validate a password or email address field with a confirmation. Example:
#
# Model:
# class Person < ActiveRecord::Base
# validates_confirmation_of :user_name, :password
# validates_confirmation_of :email_address, :message => "should match confirmation"
# end
#
# View:
# <%= password_field "person", "password" %>
# <%= password_field "person", "password_confirmation" %>
#
# The added +password_confirmation+ attribute is virtual; it exists only as an in-memory attribute for validating the password.
# To achieve this, the validation adds accessors to the model for the confirmation attribute. NOTE: This check is performed
# only if +password_confirmation+ is not +nil+, and by default only on save. To require confirmation, make sure to add a presence
# check for the confirmation attribute:
#
# validates_presence_of :password_confirmation, :if => :password_changed?
#
# Configuration options:
# * <tt>:message</tt> - A custom error message (default is: "doesn't match confirmation")
# * <tt>:on</tt> - Specifies when this validation is active (default is <tt>:save</tt>, other options <tt>:create</tt>, <tt>:update</tt>)
# * <tt>:if</tt> - Specifies a method, proc or string to call to determine if the validation should
# occur (e.g. <tt>:if => :allow_validation</tt>, or <tt>:if => Proc.new { |user| user.signup_step > 2 }</tt>). The
# method, proc or string should return or evaluate to a true or false value.
# * <tt>:unless</tt> - Specifies a method, proc or string to call to determine if the validation should
# not occur (e.g. <tt>:unless => :skip_validation</tt>, or <tt>:unless => Proc.new { |user| user.signup_step <= 2 }</tt>). The
# method, proc or string should return or evaluate to a true or false value.
def validates_confirmation_of(*attr_names)
configuration = { :message => ActiveRecord::Errors.default_error_messages[:confirmation], :on => :save }
configuration.update(attr_names.extract_options!)
attr_accessor(*(attr_names.map { |n| "#{n}_confirmation" }))
validates_each(attr_names, configuration) do |record, attr_name, value|
record.errors.add(attr_name, configuration[:message]) unless record.send("#{attr_name}_confirmation").nil? or value == record.send("#{attr_name}_confirmation")
end
end
end
end
end

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vendor/rails/activemodel/lib/active_model/validations/exclusion.rb vendored Normal file
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module ActiveModel
module Validations
module ClassMethods
# Validates that the value of the specified attribute is not in a particular enumerable object.
#
# class Person < ActiveRecord::Base
# validates_exclusion_of :username, :in => %w( admin superuser ), :message => "You don't belong here"
# validates_exclusion_of :age, :in => 30..60, :message => "This site is only for under 30 and over 60"
# validates_exclusion_of :format, :in => %w( mov avi ), :message => "extension %s is not allowed"
# end
#
# Configuration options:
# * <tt>:in</tt> - An enumerable object of items that the value shouldn't be part of
# * <tt>:message</tt> - Specifies a custom error message (default is: "is reserved")
# * <tt>:allow_nil</tt> - If set to +true+, skips this validation if the attribute is +nil+ (default is: +false+)
# * <tt>:allow_blank</tt> - If set to +true+, skips this validation if the attribute is blank (default is: +false+)
# * <tt>:if</tt> - Specifies a method, proc or string to call to determine if the validation should
# occur (e.g. <tt>:if => :allow_validation</tt>, or <tt>:if => Proc.new { |user| user.signup_step > 2 }</tt>). The
# method, proc or string should return or evaluate to a true or false value.
# * <tt>:unless</tt> - Specifies a method, proc or string to call to determine if the validation should
# not occur (e.g. <tt>:unless => :skip_validation</tt>, or <tt>:unless => Proc.new { |user| user.signup_step <= 2 }</tt>). The
# method, proc or string should return or evaluate to a true or false value.
def validates_exclusion_of(*attr_names)
configuration = { :message => ActiveRecord::Errors.default_error_messages[:exclusion], :on => :save }
configuration.update(attr_names.extract_options!)
enum = configuration[:in] || configuration[:within]
raise(ArgumentError, "An object with the method include? is required must be supplied as the :in option of the configuration hash") unless enum.respond_to?("include?")
validates_each(attr_names, configuration) do |record, attr_name, value|
record.errors.add(attr_name, configuration[:message] % value) if enum.include?(value)
end
end
end
end
end

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module ActiveModel
module Validations
module ClassMethods
# Validates whether the value of the specified attribute is of the correct form by matching it against the regular expression
# provided.
#
# class Person < ActiveRecord::Base
# validates_format_of :email, :with => /\A([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})\Z/i, :on => :create
# end
#
# Note: use <tt>\A</tt> and <tt>\Z</tt> to match the start and end of the string, <tt>^</tt> and <tt>$</tt> match the start/end of a line.
#
# A regular expression must be provided or else an exception will be raised.
#
# Configuration options:
# * <tt>:message</tt> - A custom error message (default is: "is invalid")
# * <tt>:allow_nil</tt> - If set to +true+, skips this validation if the attribute is +nil+ (default is: +false+)
# * <tt>:allow_blank</tt> - If set to +true+, skips this validation if the attribute is blank (default is: +false+)
# * <tt>:with</tt> - The regular expression used to validate the format with (note: must be supplied!)
# * <tt>:on</tt> - Specifies when this validation is active (default is <tt>:save</tt>, other options <tt>:create</tt>, <tt>:update</tt>)
# * <tt>:if</tt> - Specifies a method, proc or string to call to determine if the validation should
# occur (e.g. <tt>:if => :allow_validation</tt>, or <tt>:if => Proc.new { |user| user.signup_step > 2 }</tt>). The
# method, proc or string should return or evaluate to a true or false value.
# * <tt>:unless</tt> - Specifies a method, proc or string to call to determine if the validation should
# not occur (e.g. <tt>:unless => :skip_validation</tt>, or <tt>:unless => Proc.new { |user| user.signup_step <= 2 }</tt>). The
# method, proc or string should return or evaluate to a true or false value.
def validates_format_of(*attr_names)
configuration = { :message => ActiveRecord::Errors.default_error_messages[:invalid], :on => :save, :with => nil }
configuration.update(attr_names.extract_options!)
raise(ArgumentError, "A regular expression must be supplied as the :with option of the configuration hash") unless configuration[:with].is_a?(Regexp)
validates_each(attr_names, configuration) do |record, attr_name, value|
record.errors.add(attr_name, configuration[:message]) unless value.to_s =~ configuration[:with]
end
end
end
end
end

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module ActiveModel
module Validations
module ClassMethods
# Validates whether the value of the specified attribute is available in a particular enumerable object.
#
# class Person < ActiveRecord::Base
# validates_inclusion_of :gender, :in => %w( m f ), :message => "woah! what are you then!??!!"
# validates_inclusion_of :age, :in => 0..99
# validates_inclusion_of :format, :in => %w( jpg gif png ), :message => "extension %s is not included in the list"
# end
#
# Configuration options:
# * <tt>:in</tt> - An enumerable object of available items
# * <tt>:message</tt> - Specifies a custom error message (default is: "is not included in the list")
# * <tt>:allow_nil</tt> - If set to +true+, skips this validation if the attribute is null (default is: +false+)
# * <tt>:allow_blank</tt> - If set to +true+, skips this validation if the attribute is blank (default is: +false+)
# * <tt>:if</tt> - Specifies a method, proc or string to call to determine if the validation should
# occur (e.g. <tt>:if => :allow_validation</tt>, or <tt>:if => Proc.new { |user| user.signup_step > 2 }</tt>). The
# method, proc or string should return or evaluate to a true or false value.
# * <tt>:unless</tt> - Specifies a method, proc or string to call to determine if the validation should
# not occur (e.g. <tt>:unless => :skip_validation</tt>, or <tt>:unless => Proc.new { |user| user.signup_step <= 2 }</tt>). The
# method, proc or string should return or evaluate to a true or false value.
def validates_inclusion_of(*attr_names)
configuration = { :message => ActiveRecord::Errors.default_error_messages[:inclusion], :on => :save }
configuration.update(attr_names.extract_options!)
enum = configuration[:in] || configuration[:within]
raise(ArgumentError, "An object with the method include? is required must be supplied as the :in option of the configuration hash") unless enum.respond_to?("include?")
validates_each(attr_names, configuration) do |record, attr_name, value|
record.errors.add(attr_name, configuration[:message] % value) unless enum.include?(value)
end
end
end
end
end

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module ActiveModel
module Validations
module ClassMethods
ALL_RANGE_OPTIONS = [ :is, :within, :in, :minimum, :maximum ].freeze
# Validates that the specified attribute matches the length restrictions supplied. Only one option can be used at a time:
#
# class Person < ActiveRecord::Base
# validates_length_of :first_name, :maximum => 30
# validates_length_of :last_name, :maximum => 30, :message => "less than %d if you don't mind"
# validates_length_of :fax, :in => 7..32, :allow_nil => true
# validates_length_of :phone, :in => 7..32, :allow_blank => true
# validates_length_of :user_name, :within => 6..20, :too_long => "pick a shorter name", :too_short => "pick a longer name"
# validates_length_of :fav_bra_size, :minimum => 1, :too_short => "please enter at least %d character"
# validates_length_of :smurf_leader, :is => 4, :message => "papa is spelled with %d characters... don't play me."
# end
#
# Configuration options:
# * <tt>:minimum</tt> - The minimum size of the attribute
# * <tt>:maximum</tt> - The maximum size of the attribute
# * <tt>:is</tt> - The exact size of the attribute
# * <tt>:within</tt> - A range specifying the minimum and maximum size of the attribute
# * <tt>:in</tt> - A synonym (or alias) for <tt>:within</tt>
# * <tt>:allow_nil</tt> - Attribute may be +nil+; skip validation.
# * <tt>:allow_blank</tt> - Attribute may be blank; skip validation.
# * <tt>:too_long</tt> - The error message if the attribute goes over the maximum (default is: "is too long (maximum is %d characters)")
# * <tt>:too_short</tt> - The error message if the attribute goes under the minimum (default is: "is too short (min is %d characters)")
# * <tt>:wrong_length</tt> - The error message if using the <tt>:is</tt> method and the attribute is the wrong size (default is: "is the wrong length (should be %d characters)")
# * <tt>:message</tt> - The error message to use for a <tt>:minimum</tt>, <tt>:maximum</tt>, or <tt>:is</tt> violation. An alias of the appropriate <tt>:too_long</tt>/<tt>too_short</tt>/<tt>wrong_length</tt> message
# * <tt>:on</tt> - Specifies when this validation is active (default is <tt>:save</tt>, other options <tt>:create</tt>, <tt>:update</tt>)
# * <tt>:if</tt> - Specifies a method, proc or string to call to determine if the validation should
# occur (e.g. <tt>:if => :allow_validation</tt>, or <tt>:if => Proc.new { |user| user.signup_step > 2 }</tt>). The
# method, proc or string should return or evaluate to a true or false value.
# * <tt>:unless</tt> - Specifies a method, proc or string to call to determine if the validation should
# not occur (e.g. <tt>:unless => :skip_validation</tt>, or <tt>:unless => Proc.new { |user| user.signup_step <= 2 }</tt>). The
# method, proc or string should return or evaluate to a true or false value.
def validates_length_of(*attrs)
# Merge given options with defaults.
options = {
:too_long => ActiveRecord::Errors.default_error_messages[:too_long],
:too_short => ActiveRecord::Errors.default_error_messages[:too_short],
:wrong_length => ActiveRecord::Errors.default_error_messages[:wrong_length]
}.merge(DEFAULT_VALIDATION_OPTIONS)
options.update(attrs.extract_options!.symbolize_keys)
# Ensure that one and only one range option is specified.
range_options = ALL_RANGE_OPTIONS & options.keys
case range_options.size
when 0
raise ArgumentError, 'Range unspecified. Specify the :within, :maximum, :minimum, or :is option.'
when 1
# Valid number of options; do nothing.
else
raise ArgumentError, 'Too many range options specified. Choose only one.'
end
# Get range option and value.
option = range_options.first
option_value = options[range_options.first]
case option
when :within, :in
raise ArgumentError, ":#{option} must be a Range" unless option_value.is_a?(Range)
too_short = options[:too_short] % option_value.begin
too_long = options[:too_long] % option_value.end
validates_each(attrs, options) do |record, attr, value|
value = value.split(//) if value.kind_of?(String)
if value.nil? or value.size < option_value.begin
record.errors.add(attr, too_short)
elsif value.size > option_value.end
record.errors.add(attr, too_long)
end
end
when :is, :minimum, :maximum
raise ArgumentError, ":#{option} must be a nonnegative Integer" unless option_value.is_a?(Integer) and option_value >= 0
# Declare different validations per option.
validity_checks = { :is => "==", :minimum => ">=", :maximum => "<=" }
message_options = { :is => :wrong_length, :minimum => :too_short, :maximum => :too_long }
message = (options[:message] || options[message_options[option]]) % option_value
validates_each(attrs, options) do |record, attr, value|
value = value.split(//) if value.kind_of?(String)
record.errors.add(attr, message) unless !value.nil? and value.size.method(validity_checks[option])[option_value]
end
end
end
alias_method :validates_size_of, :validates_length_of
end
end
end

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module ActiveModel
module Validations
module ClassMethods
ALL_NUMERICALITY_CHECKS = { :greater_than => '>', :greater_than_or_equal_to => '>=',
:equal_to => '==', :less_than => '<', :less_than_or_equal_to => '<=',
:odd => 'odd?', :even => 'even?' }.freeze
# Validates whether the value of the specified attribute is numeric by trying to convert it to
# a float with Kernel.Float (if <tt>integer</tt> is false) or applying it to the regular expression
# <tt>/\A[\+\-]?\d+\Z/</tt> (if <tt>integer</tt> is true).
#
# class Person < ActiveRecord::Base
# validates_numericality_of :value, :on => :create
# end
#
# Configuration options:
# * <tt>:message</tt> - A custom error message (default is: "is not a number").
# * <tt>:on</tt> - Specifies when this validation is active (default is <tt>:save</tt>, other options <tt>:create</tt>, <tt>:update</tt>).
# * <tt>:only_integer</tt> - Specifies whether the value has to be an integer, e.g. an integral value (default is +false+).
# * <tt>:allow_nil</tt> - Skip validation if attribute is +nil+ (default is +false+). Notice that for fixnum and float columns empty strings are converted to +nil+.
# * <tt>:greater_than</tt> - Specifies the value must be greater than the supplied value.
# * <tt>:greater_than_or_equal_to</tt> - Specifies the value must be greater than or equal the supplied value.
# * <tt>:equal_to</tt> - Specifies the value must be equal to the supplied value.
# * <tt>:less_than</tt> - Specifies the value must be less than the supplied value.
# * <tt>:less_than_or_equal_to</tt> - Specifies the value must be less than or equal the supplied value.
# * <tt>:odd</tt> - Specifies the value must be an odd number.
# * <tt>:even</tt> - Specifies the value must be an even number.
# * <tt>:if</tt> - Specifies a method, proc or string to call to determine if the validation should
# occur (e.g. <tt>:if => :allow_validation</tt>, or <tt>:if => Proc.new { |user| user.signup_step > 2 }</tt>). The
# method, proc or string should return or evaluate to a true or false value.
# * <tt>:unless</tt> - Specifies a method, proc or string to call to determine if the validation should
# not occur (e.g. <tt>:unless => :skip_validation</tt>, or <tt>:unless => Proc.new { |user| user.signup_step <= 2 }</tt>). The
# method, proc or string should return or evaluate to a true or false value.
def validates_numericality_of(*attr_names)
configuration = { :on => :save, :only_integer => false, :allow_nil => false }
configuration.update(attr_names.extract_options!)
numericality_options = ALL_NUMERICALITY_CHECKS.keys & configuration.keys
(numericality_options - [ :odd, :even ]).each do |option|
raise ArgumentError, ":#{option} must be a number" unless configuration[option].is_a?(Numeric)
end
validates_each(attr_names,configuration) do |record, attr_name, value|
raw_value = record.send("#{attr_name}_before_type_cast") || value
next if configuration[:allow_nil] and raw_value.nil?
if configuration[:only_integer]
unless raw_value.to_s =~ /\A[+-]?\d+\Z/
record.errors.add(attr_name, configuration[:message] || ActiveRecord::Errors.default_error_messages[:not_a_number])
next
end
raw_value = raw_value.to_i
else
begin
raw_value = Kernel.Float(raw_value.to_s)
rescue ArgumentError, TypeError
record.errors.add(attr_name, configuration[:message] || ActiveRecord::Errors.default_error_messages[:not_a_number])
next
end
end
numericality_options.each do |option|
case option
when :odd, :even
record.errors.add(attr_name, configuration[:message] || ActiveRecord::Errors.default_error_messages[option]) unless raw_value.to_i.method(ALL_NUMERICALITY_CHECKS[option])[]
else
message = configuration[:message] || ActiveRecord::Errors.default_error_messages[option]
message = message % configuration[option] if configuration[option]
record.errors.add(attr_name, message) unless raw_value.method(ALL_NUMERICALITY_CHECKS[option])[configuration[option]]
end
end
end
end
end
end
end

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module ActiveModel
module Validations
module ClassMethods
# Validates that the specified attributes are not blank (as defined by Object#blank?). Happens by default on save. Example:
#
# class Person < ActiveRecord::Base
# validates_presence_of :first_name
# end
#
# The +first_name+ attribute must be in the object and it cannot be blank.
#
# If you want to validate the presence of a boolean field (where the real values are +true+ and +false+),
# you will want to use
#
# validates_inclusion_of :field_name, :in => [true, false]
#
# This is due to the way Object#blank? handles boolean values:
#
# false.blank? # => true
#
# Configuration options:
# * <tt>:message</tt> - A custom error message (default is: "can't be blank")
# * <tt>:on</tt> - Specifies when this validation is active (default is <tt>:save</tt>, other options <tt>:create</tt>, <tt>:update</tt>)
# * <tt>:if</tt> - Specifies a method, proc or string to call to determine if the validation should
# occur (e.g. <tt>:if => :allow_validation</tt>, or <tt>:if => Proc.new { |user| user.signup_step > 2 }</tt>). The
# method, proc or string should return or evaluate to a true or false value.
# * <tt>:unless</tt> - Specifies a method, proc or string to call to determine if the validation should
# not occur (e.g. <tt>:unless => :skip_validation</tt>, or <tt>:unless => Proc.new { |user| user.signup_step <= 2 }</tt>). The
# method, proc or string should return or evaluate to a true or false value.
def validates_presence_of(*attr_names)
configuration = { :message => ActiveRecord::Errors.default_error_messages[:blank], :on => :save }
configuration.update(attr_names.extract_options!)
# can't use validates_each here, because it cannot cope with nonexistent attributes,
# while errors.add_on_empty can
send(validation_method(configuration[:on]), configuration) do |record|
record.errors.add_on_blank(attr_names, configuration[:message])
end
end
end
end
end

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module ActiveModel
module Validations
module ClassMethods
# Validates whether the value of the specified attributes are unique across the system. Useful for making sure that only one user
# can be named "davidhh".
#
# class Person < ActiveRecord::Base
# validates_uniqueness_of :user_name, :scope => :account_id
# end
#
# It can also validate whether the value of the specified attributes are unique based on multiple scope parameters. For example,
# making sure that a teacher can only be on the schedule once per semester for a particular class.
#
# class TeacherSchedule < ActiveRecord::Base
# validates_uniqueness_of :teacher_id, :scope => [:semester_id, :class_id]
# end
#
# When the record is created, a check is performed to make sure that no record exists in the database with the given value for the specified
# attribute (that maps to a column). When the record is updated, the same check is made but disregarding the record itself.
#
# Because this check is performed outside the database there is still a chance that duplicate values
# will be inserted in two parallel transactions. To guarantee against this you should create a
# unique index on the field. See +add_index+ for more information.
#
# Configuration options:
# * <tt>:message</tt> - Specifies a custom error message (default is: "has already been taken")
# * <tt>:scope</tt> - One or more columns by which to limit the scope of the uniqueness constraint.
# * <tt>:case_sensitive</tt> - Looks for an exact match. Ignored by non-text columns (+false+ by default).
# * <tt>:allow_nil</tt> - If set to +true+, skips this validation if the attribute is +nil+ (default is: +false+)
# * <tt>:allow_blank</tt> - If set to +true+, skips this validation if the attribute is blank (default is: +false+)
# * <tt>:if</tt> - Specifies a method, proc or string to call to determine if the validation should
# occur (e.g. <tt>:if => :allow_validation</tt>, or <tt>:if => Proc.new { |user| user.signup_step > 2 }</tt>). The
# method, proc or string should return or evaluate to a true or false value.
# * <tt>:unless</tt> - Specifies a method, proc or string to call to determine if the validation should
# not occur (e.g. <tt>:unless => :skip_validation</tt>, or <tt>:unless => Proc.new { |user| user.signup_step <= 2 }</tt>). The
# method, proc or string should return or evaluate to a true or false value.
def validates_uniqueness_of(*attr_names)
configuration = { :message => ActiveRecord::Errors.default_error_messages[:taken] }
configuration.update(attr_names.extract_options!)
validates_each(attr_names,configuration) do |record, attr_name, value|
# The check for an existing value should be run from a class that
# isn't abstract. This means working down from the current class
# (self), to the first non-abstract class. Since classes don't know
# their subclasses, we have to build the hierarchy between self and
# the record's class.
class_hierarchy = [record.class]
while class_hierarchy.first != self
class_hierarchy.insert(0, class_hierarchy.first.superclass)
end
# Now we can work our way down the tree to the first non-abstract
# class (which has a database table to query from).
finder_class = class_hierarchy.detect { |klass| !klass.abstract_class? }
if value.nil? || (configuration[:case_sensitive] || !finder_class.columns_hash[attr_name.to_s].text?)
condition_sql = "#{record.class.quoted_table_name}.#{attr_name} #{attribute_condition(value)}"
condition_params = [value]
else
# sqlite has case sensitive SELECT query, while MySQL/Postgresql don't.
# Hence, this is needed only for sqlite.
condition_sql = "LOWER(#{record.class.quoted_table_name}.#{attr_name}) #{attribute_condition(value)}"
condition_params = [value.downcase]
end
if scope = configuration[:scope]
Array(scope).map do |scope_item|
scope_value = record.send(scope_item)
condition_sql << " AND #{record.class.quoted_table_name}.#{scope_item} #{attribute_condition(scope_value)}"
condition_params << scope_value
end
end
unless record.new_record?
condition_sql << " AND #{record.class.quoted_table_name}.#{record.class.primary_key} <> ?"
condition_params << record.send(:id)
end
results = finder_class.with_exclusive_scope do
connection.select_all(
construct_finder_sql(
:select => "#{attr_name}",
:from => "#{finder_class.quoted_table_name}",
:conditions => [condition_sql, *condition_params]
)
)
end
unless results.length.zero?
found = true
# As MySQL/Postgres don't have case sensitive SELECT queries, we try to find duplicate
# column in ruby when case sensitive option
if configuration[:case_sensitive] && finder_class.columns_hash[attr_name.to_s].text?
found = results.any? { |a| a[attr_name.to_s] == value }
end
record.errors.add(attr_name, configuration[:message]) if found
end
end
end
end
end
end