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Use define_callbacks helper for ActiveRecord validations.

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This commit is contained in:
Joshua Peek 2008-04-20 11:45:44 -05:00
parent 14a40804a2
commit 46ab7422d9
4 changed files with 25 additions and 57 deletions
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18
activemodel/lib/active_model/validations.rb
View file

@ -3,23 +3,7 @@ module ActiveModel
def self.included(base) # :nodoc:
base.extend(ClassMethods)
base.send!(:include, ActiveSupport::Callbacks)
%w( validate validate_on_create validate_on_update ).each do |validation_method|
base.class_eval <<-"end_eval"
def self.#{validation_method}(*methods, &block)
self.#{validation_method}_callback_chain | CallbackChain.build(:#{validation_method}, *methods, &block)
end
def self.#{validation_method}_callback_chain
if chain = read_inheritable_attribute(:#{validation_method})
return chain
else
write_inheritable_attribute(:#{validation_method}, CallbackChain.new)
return #{validation_method}_callback_chain
end
end
end_eval
end
base.define_callbacks :validate, :validate_on_create, :validate_on_update
end
module ClassMethods

26
activerecord/lib/active_record/validations.rb
View file

@ -281,23 +281,7 @@ module ActiveRecord
end
base.send :include, ActiveSupport::Callbacks
VALIDATIONS.each do |validation_method|
base.class_eval <<-"end_eval"
def self.#{validation_method}(*methods, &block)
self.#{validation_method}_callback_chain | CallbackChain.build(:#{validation_method}, *methods, &block)
end
def self.#{validation_method}_callback_chain
if chain = read_inheritable_attribute(:#{validation_method})
return chain
else
write_inheritable_attribute(:#{validation_method}, CallbackChain.new)
return #{validation_method}_callback_chain
end
end
end_eval
end
base.define_callbacks *VALIDATIONS
end
# All of the following validations are defined in the class scope of the model that you're interested in validating.
@ -403,7 +387,7 @@ module ActiveRecord
# 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. :unless => :skip_validation, or :unless => Proc.new { |user| user.signup_step <= 2 }). The
# method, proc or string should return or evaluate to a true or false value.
# 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!)
@ -437,7 +421,7 @@ module ActiveRecord
# 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. :unless => :skip_validation, or :unless => Proc.new { |user| user.signup_step <= 2 }). The
# method, proc or string should return or evaluate to a true or false value.
# 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!)
@ -519,7 +503,7 @@ module ActiveRecord
# 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. :unless => :skip_validation, or :unless => Proc.new { |user| user.signup_step <= 2 }). The
# method, proc or string should return or evaluate to a true or false value.
# 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 = {
@ -596,7 +580,7 @@ module ActiveRecord
# 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
# 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:

18
activerecord/test/cases/validations_test.rb
View file

@ -58,9 +58,9 @@ class ValidationsTest < ActiveRecord::TestCase
fixtures :topics, :developers, 'warehouse-things'
def setup
Topic.write_inheritable_attribute(:validate, nil)
Topic.write_inheritable_attribute(:validate_on_create, nil)
Topic.write_inheritable_attribute(:validate_on_update, nil)
Topic.instance_variable_set("@validate_callbacks", ActiveSupport::Callbacks::CallbackChain.new)
Topic.instance_variable_set("@validate_on_create_callbacks", ActiveSupport::Callbacks::CallbackChain.new)
Topic.instance_variable_set("@validate_on_update_callbacks", ActiveSupport::Callbacks::CallbackChain.new)
end
def test_single_field_validation
@ -839,16 +839,16 @@ class ValidationsTest < ActiveRecord::TestCase
reply = t.replies.build('title' => 'areply', 'content' => 'whateveragain')
assert t.valid?
end
def test_validates_size_of_association_using_within
assert_nothing_raised { Topic.validates_size_of :replies, :within => 1..2 }
t = Topic.new('title' => 'noreplies', 'content' => 'whatever')
assert !t.save
assert t.errors.on(:replies)
reply = t.replies.build('title' => 'areply', 'content' => 'whateveragain')
assert t.valid?
2.times { t.replies.build('title' => 'areply', 'content' => 'whateveragain') }
assert !t.save
assert t.errors.on(:replies)
@ -1351,9 +1351,9 @@ class ValidatesNumericalityTest < ActiveRecord::TestCase
JUNK = ["not a number", "42 not a number", "0xdeadbeef", "00-1", "--3", "+-3", "+3-1", "-+019.0", "12.12.13.12", "123\nnot a number"]
def setup
Topic.write_inheritable_attribute(:validate, nil)
Topic.write_inheritable_attribute(:validate_on_create, nil)
Topic.write_inheritable_attribute(:validate_on_update, nil)
Topic.instance_variable_set("@validate_callbacks", ActiveSupport::Callbacks::CallbackChain.new)
Topic.instance_variable_set("@validate_on_create_callbacks", ActiveSupport::Callbacks::CallbackChain.new)
Topic.instance_variable_set("@validate_on_update_callbacks", ActiveSupport::Callbacks::CallbackChain.new)
end
def test_default_validates_numericality_of

20
activesupport/lib/active_support/callbacks.rb
View file

@ -99,8 +99,8 @@ module ActiveSupport
def |(chain)
if chain.is_a?(CallbackChain)
chain.each { |callback| self | callback }
elsif chain.is_a?(Callback)
if index = index(chain)
else
if (found_callback = find(chain)) && (index = index(chain))
self[index] = chain
else
self << chain
@ -224,8 +224,8 @@ module ActiveSupport
end
end
# Runs all the callbacks defined for the given options.
#
# Runs all the callbacks defined for the given options.
#
# If a block is given it will be called after each callback receiving as arguments:
#
# * the result from the callback
@ -236,31 +236,31 @@ module ActiveSupport
# Example:
# class Storage
# include ActiveSupport::Callbacks
#
#
# define_callbacks :before_save, :after_save
# end
#
#
# class ConfigStorage < Storage
# before_save :pass
# before_save :pass
# before_save :stop
# before_save :pass
#
#
# def pass
# puts "pass"
# end
#
#
# def stop
# puts "stop"
# return false
# end
#
#
# def save
# result = run_callbacks(:before_save) { |result, object| result == false }
# puts "- save" if result
# end
# end
#
#
# config = ConfigStorage.new
# config.save
#