/usr/lib/ruby/vendor_ruby/active_model/validations/validates.rb is in ruby-activemodel-3.2 3.2.6-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 | require 'active_support/core_ext/hash/slice'
module ActiveModel
# == Active Model validates method
module Validations
module ClassMethods
# This method is a shortcut to all default validators and any custom
# validator classes ending in 'Validator'. Note that Rails default
# validators can be overridden inside specific classes by creating
# custom validator classes in their place such as PresenceValidator.
#
# Examples of using the default rails validators:
#
# validates :terms, :acceptance => true
# validates :password, :confirmation => true
# validates :username, :exclusion => { :in => %w(admin superuser) }
# validates :email, :format => { :with => /\A([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})\Z/i, :on => :create }
# validates :age, :inclusion => { :in => 0..9 }
# validates :first_name, :length => { :maximum => 30 }
# validates :age, :numericality => true
# validates :username, :presence => true
# validates :username, :uniqueness => true
#
# The power of the +validates+ method comes when using custom validators
# and default validators in one call for a given attribute e.g.
#
# class EmailValidator < ActiveModel::EachValidator
# def validate_each(record, attribute, value)
# record.errors.add attribute, (options[:message] || "is not an email") unless
# value =~ /\A([^@\s]+)@((?:[-a-z0-9]+\.)+[a-z]{2,})\z/i
# end
# end
#
# class Person
# include ActiveModel::Validations
# attr_accessor :name, :email
#
# validates :name, :presence => true, :uniqueness => true, :length => { :maximum => 100 }
# validates :email, :presence => true, :email => true
# end
#
# Validator classes may also exist within the class being validated
# allowing custom modules of validators to be included as needed e.g.
#
# class Film
# include ActiveModel::Validations
#
# class TitleValidator < ActiveModel::EachValidator
# def validate_each(record, attribute, value)
# record.errors.add attribute, "must start with 'the'" unless value =~ /\Athe/i
# end
# end
#
# validates :name, :title => true
# end
#
# Additionally validator classes may be in another namespace and still used within any class.
#
# validates :name, :'film/title' => true
#
# The validators hash can also handle regular expressions, ranges,
# arrays and strings in shortcut form, e.g.
#
# validates :email, :format => /@/
# validates :gender, :inclusion => %w(male female)
# validates :password, :length => 6..20
#
# When using shortcut form, ranges and arrays are passed to your
# validator's initializer as +options[:in]+ while other types including
# regular expressions and strings are passed as +options[:with]+
#
# Finally, the options +:if+, +:unless+, +:on+, +:allow_blank+, +:allow_nil+ and +:strict+
# can be given to one specific validator, as a hash:
#
# validates :password, :presence => { :if => :password_required? }, :confirmation => true
#
# Or to all at the same time:
#
# validates :password, :presence => true, :confirmation => true, :if => :password_required?
#
def validates(*attributes)
defaults = attributes.extract_options!
validations = defaults.slice!(*_validates_default_keys)
raise ArgumentError, "You need to supply at least one attribute" if attributes.empty?
raise ArgumentError, "You need to supply at least one validation" if validations.empty?
defaults.merge!(:attributes => attributes)
validations.each do |key, options|
key = "#{key.to_s.camelize}Validator"
begin
validator = key.include?('::') ? key.constantize : const_get(key)
rescue NameError
raise ArgumentError, "Unknown validator: '#{key}'"
end
validates_with(validator, defaults.merge(_parse_validates_options(options)))
end
end
# This method is used to define validation that cannot be corrected by end
# user and is considered exceptional. So each validator defined with bang
# or <tt>:strict</tt> option set to <tt>true</tt> will always raise
# <tt>ActiveModel::StrictValidationFailed</tt> instead of adding error
# when validation fails.
# See <tt>validates</tt> for more information about validation itself.
def validates!(*attributes)
options = attributes.extract_options!
options[:strict] = true
validates(*(attributes << options))
end
protected
# When creating custom validators, it might be useful to be able to specify
# additional default keys. This can be done by overwriting this method.
def _validates_default_keys
[:if, :unless, :on, :allow_blank, :allow_nil , :strict]
end
def _parse_validates_options(options) #:nodoc:
case options
when TrueClass
{}
when Hash
options
when Range, Array
{ :in => options }
else
{ :with => options }
end
end
end
end
end
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