penguincoder
/
barleysodas
Archived
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

adding acts_as_versioned contents 

git-svn-id: http://svn.barleysodas.com/barleysodas/trunk@25 0f7b21a7-9e3a-4941-bbeb-ce5c7c368fa7
master
andrew 2007-11-15 23:32:40 +00:00
parent 21ef685155
commit a7b0d46473
23 changed files with 1513 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

74
vendor/plugins/acts_as_versioned/CHANGELOG vendored Normal file
View File

@ -0,0 +1,74 @@
*SVN* (version numbers are overrated)
* (5 Oct 2006) Allow customization of #versions association options [Dan Peterson]
*0.5.1*
* (8 Aug 2006) Versioned models now belong to the unversioned model. @article_version.article.class => Article [Aslak Hellesoy]
*0.5* # do versions even matter for plugins?
* (21 Apr 2006) Added without_locking and without_revision methods.
Foo.without_revision do
@foo.update_attributes ...
end
*0.4*
* (28 March 2006) Rename non_versioned_fields to non_versioned_columns (old one is kept for compatibility).
* (28 March 2006) Made explicit documentation note that string column names are required for non_versioned_columns.
*0.3.1*
* (7 Jan 2006) explicitly set :foreign_key option for the versioned model's belongs_to assocation for STI [Caged]
* (7 Jan 2006) added tests to prove has_many :through joins work
*0.3*
* (2 Jan 2006) added ability to share a mixin with versioned class
* (2 Jan 2006) changed the dynamic version model to MyModel::Version
*0.2.4*
* (27 Nov 2005) added note about possible destructive behavior of if_changed? [Michael Schuerig]
*0.2.3*
* (12 Nov 2005) fixed bug with old behavior of #blank? [Michael Schuerig]
* (12 Nov 2005) updated tests to use ActiveRecord Schema
*0.2.2*
* (3 Nov 2005) added documentation note to #acts_as_versioned [Martin Jul]
*0.2.1*
* (6 Oct 2005) renamed dirty? to changed? to keep it uniform. it was aliased to keep it backwards compatible.
*0.2*
* (6 Oct 2005) added find_versions and find_version class methods.
* (6 Oct 2005) removed transaction from create_versioned_table().
this way you can specify your own transaction around a group of operations.
* (30 Sep 2005) fixed bug where find_versions() would order by 'version' twice. (found by Joe Clark)
* (26 Sep 2005) added :sequence_name option to acts_as_versioned to set the sequence name on the versioned model
*0.1.3* (18 Sep 2005)
* First RubyForge release
*0.1.2*
* check if module is already included when acts_as_versioned is called
*0.1.1*
* Adding tests and rdocs
*0.1*
* Initial transfer from Rails ticket: http://dev.rubyonrails.com/ticket/1974

20
vendor/plugins/acts_as_versioned/MIT-LICENSE vendored Normal file
View File

@ -0,0 +1,20 @@
Copyright (c) 2005 Rick Olson
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

28
vendor/plugins/acts_as_versioned/README vendored Normal file
View File

@ -0,0 +1,28 @@
= acts_as_versioned
This library adds simple versioning to an ActiveRecord module. ActiveRecord is required.
== Resources
Install
* gem install acts_as_versioned
Rubyforge project
* http://rubyforge.org/projects/ar-versioned
RDocs
* http://ar-versioned.rubyforge.org
Subversion
* http://techno-weenie.net/svn/projects/acts_as_versioned
Collaboa
* http://collaboa.techno-weenie.net/repository/browse/acts_as_versioned
Special thanks to Dreamer on ##rubyonrails for help in early testing. His ServerSideWiki (http://serversidewiki.com)
was the first project to use acts_as_versioned <em>in the wild</em>.

41
vendor/plugins/acts_as_versioned/RUNNING_UNIT_TESTS vendored Normal file
View File

@ -0,0 +1,41 @@
== Creating the test database
The default name for the test databases is "activerecord_versioned". If you
want to use another database name then be sure to update the connection
adapter setups you want to test with in test/connections/<your database>/connection.rb.
When you have the database online, you can import the fixture tables with
the test/fixtures/db_definitions/*.sql files.
Make sure that you create database objects with the same user that you specified in i
connection.rb otherwise (on Postgres, at least) tests for default values will fail.
== Running with Rake
The easiest way to run the unit tests is through Rake. The default task runs
the entire test suite for all the adapters. You can also run the suite on just
one adapter by using the tasks test_mysql_ruby, test_ruby_mysql, test_sqlite,
or test_postresql. For more information, checkout the full array of rake tasks with "rake -T"
Rake can be found at http://rake.rubyforge.org
== Running by hand
Unit tests are located in test directory. If you only want to run a single test suite,
or don't want to bother with Rake, you can do so with something like:
cd test; ruby -I "connections/native_mysql" base_test.rb
That'll run the base suite using the MySQL-Ruby adapter. Change the adapter
and test suite name as needed.
== Faster tests
If you are using a database that supports transactions, you can set the
"AR_TX_FIXTURES" environment variable to "yes" to use transactional fixtures.
This gives a very large speed boost. With rake:
rake AR_TX_FIXTURES=yes
Or, by hand:
AR_TX_FIXTURES=yes ruby -I connections/native_sqlite3 base_test.rb

182
vendor/plugins/acts_as_versioned/Rakefile vendored Normal file
View File

@ -0,0 +1,182 @@
require 'rubygems'
Gem::manage_gems
require 'rake/rdoctask'
require 'rake/packagetask'
require 'rake/gempackagetask'
require 'rake/testtask'
require 'rake/contrib/rubyforgepublisher'
PKG_NAME = 'acts_as_versioned'
PKG_VERSION = '0.3.1'
PKG_FILE_NAME = "#{PKG_NAME}-#{PKG_VERSION}"
PROD_HOST = "technoweenie@bidwell.textdrive.com"
RUBY_FORGE_PROJECT = 'ar-versioned'
RUBY_FORGE_USER = 'technoweenie'
desc 'Default: run unit tests.'
task :default => :test
desc 'Test the calculations plugin.'
Rake::TestTask.new(:test) do |t|
t.libs << 'lib'
t.pattern = 'test/**/*_test.rb'
t.verbose = true
end
desc 'Generate documentation for the calculations plugin.'
Rake::RDocTask.new(:rdoc) do |rdoc|
rdoc.rdoc_dir = 'rdoc'
rdoc.title = "#{PKG_NAME} -- Simple versioning with active record models"
rdoc.options << '--line-numbers --inline-source'
rdoc.rdoc_files.include('README', 'CHANGELOG', 'RUNNING_UNIT_TESTS')
rdoc.rdoc_files.include('lib/**/*.rb')
end
spec = Gem::Specification.new do |s|
s.name = PKG_NAME
s.version = PKG_VERSION
s.platform = Gem::Platform::RUBY
s.summary = "Simple versioning with active record models"
s.files = FileList["{lib,test}/**/*"].to_a + %w(README MIT-LICENSE CHANGELOG RUNNING_UNIT_TESTS)
s.files.delete "acts_as_versioned_plugin.sqlite.db"
s.files.delete "acts_as_versioned_plugin.sqlite3.db"
s.files.delete "test/debug.log"
s.require_path = 'lib'
s.autorequire = 'acts_as_versioned'
s.has_rdoc = true
s.test_files = Dir['test/**/*_test.rb']
s.add_dependency 'activerecord', '>= 1.10.1'
s.add_dependency 'activesupport', '>= 1.1.1'
s.author = "Rick Olson"
s.email = "technoweenie@gmail.com"
s.homepage = "http://techno-weenie.net"
end
Rake::GemPackageTask.new(spec) do |pkg|
pkg.need_tar = true
end
desc "Publish the API documentation"
task :pdoc => [:rdoc] do
Rake::RubyForgePublisher.new(RUBY_FORGE_PROJECT, RUBY_FORGE_USER).upload
end
desc 'Publish the gem and API docs'
task :publish => [:pdoc, :rubyforge_upload]
desc "Publish the release files to RubyForge."
task :rubyforge_upload => :package do
files = %w(gem tgz).map { |ext| "pkg/#{PKG_FILE_NAME}.#{ext}" }
if RUBY_FORGE_PROJECT then
require 'net/http'
require 'open-uri'
project_uri = "http://rubyforge.org/projects/#{RUBY_FORGE_PROJECT}/"
project_data = open(project_uri) { |data| data.read }
group_id = project_data[/[?&]group_id=(\d+)/, 1]
raise "Couldn't get group id" unless group_id
# This echos password to shell which is a bit sucky
if ENV["RUBY_FORGE_PASSWORD"]
password = ENV["RUBY_FORGE_PASSWORD"]
else
print "#{RUBY_FORGE_USER}@rubyforge.org's password: "
password = STDIN.gets.chomp
end
login_response = Net::HTTP.start("rubyforge.org", 80) do |http|
data = [
"login=1",
"form_loginname=#{RUBY_FORGE_USER}",
"form_pw=#{password}"
].join("&")
http.post("/account/login.php", data)
end
cookie = login_response["set-cookie"]
raise "Login failed" unless cookie
headers = { "Cookie" => cookie }
release_uri = "http://rubyforge.org/frs/admin/?group_id=#{group_id}"
release_data = open(release_uri, headers) { |data| data.read }
package_id = release_data[/[?&]package_id=(\d+)/, 1]
raise "Couldn't get package id" unless package_id
first_file = true
release_id = ""
files.each do |filename|
basename = File.basename(filename)
file_ext = File.extname(filename)
file_data = File.open(filename, "rb") { |file| file.read }
puts "Releasing #{basename}..."
release_response = Net::HTTP.start("rubyforge.org", 80) do |http|
release_date = Time.now.strftime("%Y-%m-%d %H:%M")
type_map = {
".zip" => "3000",
".tgz" => "3110",
".gz" => "3110",
".gem" => "1400"
}; type_map.default = "9999"
type = type_map[file_ext]
boundary = "rubyqMY6QN9bp6e4kS21H4y0zxcvoor"
query_hash = if first_file then
{
"group_id" => group_id,
"package_id" => package_id,
"release_name" => PKG_FILE_NAME,
"release_date" => release_date,
"type_id" => type,
"processor_id" => "8000", # Any
"release_notes" => "",
"release_changes" => "",
"preformatted" => "1",
"submit" => "1"
}
else
{
"group_id" => group_id,
"release_id" => release_id,
"package_id" => package_id,
"step2" => "1",
"type_id" => type,
"processor_id" => "8000", # Any
"submit" => "Add This File"
}
end
query = "?" + query_hash.map do |(name, value)|
[name, URI.encode(value)].join("=")
end.join("&")
data = [
"--" + boundary,
"Content-Disposition: form-data; name=\"userfile\"; filename=\"#{basename}\"",
"Content-Type: application/octet-stream",
"Content-Transfer-Encoding: binary",
"", file_data, ""
].join("\x0D\x0A")
release_headers = headers.merge(
"Content-Type" => "multipart/form-data; boundary=#{boundary}"
)
target = first_file ? "/frs/admin/qrs.php" : "/frs/admin/editrelease.php"
http.post(target + query, data, release_headers)
end
if first_file then
release_id = release_response.body[/release_id=(\d+)/, 1]
raise("Couldn't get release id") unless release_id
end
first_file = false
end
end
end

1
vendor/plugins/acts_as_versioned/init.rb vendored Normal file
View File

@ -0,0 +1 @@
require 'acts_as_versioned'

541
vendor/plugins/acts_as_versioned/lib/acts_as_versioned.rb vendored Normal file
View File

@ -0,0 +1,541 @@
# Copyright (c) 2005 Rick Olson
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
module ActiveRecord #:nodoc:
module Acts #:nodoc:
# Specify this act if you want to save a copy of the row in a versioned table. This assumes there is a
# versioned table ready and that your model has a version field. This works with optimisic locking if the lock_version
# column is present as well.
#
# The class for the versioned model is derived the first time it is seen. Therefore, if you change your database schema you have to restart
# your container for the changes to be reflected. In development mode this usually means restarting WEBrick.
#
# class Page < ActiveRecord::Base
# # assumes pages_versions table
# acts_as_versioned
# end
#
# Example:
#
# page = Page.create(:title => 'hello world!')
# page.version # => 1
#
# page.title = 'hello world'
# page.save
# page.version # => 2
# page.versions.size # => 2
#
# page.revert_to(1) # using version number
# page.title # => 'hello world!'
#
# page.revert_to(page.versions.last) # using versioned instance
# page.title # => 'hello world'
#
# page.versions.earliest # efficient query to find the first version
# page.versions.latest # efficient query to find the most recently created version
#
#
# Simple Queries to page between versions
#
# page.versions.before(version)
# page.versions.after(version)
#
# Access the previous/next versions from the versioned model itself
#
# version = page.versions.latest
# version.previous # go back one version
# version.next # go forward one version
#
# See ActiveRecord::Acts::Versioned::ClassMethods#acts_as_versioned for configuration options
module Versioned
CALLBACKS = [:set_new_version, :save_version_on_create, :save_version?, :clear_changed_attributes]
def self.included(base) # :nodoc:
base.extend ClassMethods
end
module ClassMethods
# == Configuration options
#
# * <tt>class_name</tt> - versioned model class name (default: PageVersion in the above example)
# * <tt>table_name</tt> - versioned model table name (default: page_versions in the above example)
# * <tt>foreign_key</tt> - foreign key used to relate the versioned model to the original model (default: page_id in the above example)
# * <tt>inheritance_column</tt> - name of the column to save the model's inheritance_column value for STI. (default: versioned_type)
# * <tt>version_column</tt> - name of the column in the model that keeps the version number (default: version)
# * <tt>sequence_name</tt> - name of the custom sequence to be used by the versioned model.
# * <tt>limit</tt> - number of revisions to keep, defaults to unlimited
# * <tt>if</tt> - symbol of method to check before saving a new version. If this method returns false, a new version is not saved.
# For finer control, pass either a Proc or modify Model#version_condition_met?
#
# acts_as_versioned :if => Proc.new { |auction| !auction.expired? }
#
# or...
#
# class Auction
# def version_condition_met? # totally bypasses the <tt>:if</tt> option
# !expired?
# end
# end
#
# * <tt>if_changed</tt> - Simple way of specifying attributes that are required to be changed before saving a model. This takes
# either a symbol or array of symbols. WARNING - This will attempt to overwrite any attribute setters you may have.
# Use this instead if you want to write your own attribute setters (and ignore if_changed):
#
# def name=(new_name)
# write_changed_attribute :name, new_name
# end
#
# * <tt>extend</tt> - Lets you specify a module to be mixed in both the original and versioned models. You can also just pass a block
# to create an anonymous mixin:
#
# class Auction
# acts_as_versioned do
# def started?
# !started_at.nil?
# end
# end
# end
#
# or...
#
# module AuctionExtension
# def started?
# !started_at.nil?
# end
# end
# class Auction
# acts_as_versioned :extend => AuctionExtension
# end
#
# Example code:
#
# @auction = Auction.find(1)
# @auction.started?
# @auction.versions.first.started?
#
# == Database Schema
#
# The model that you're versioning needs to have a 'version' attribute. The model is versioned
# into a table called #{model}_versions where the model name is singlular. The _versions table should
# contain all the fields you want versioned, the same version column, and a #{model}_id foreign key field.
#
# A lock_version field is also accepted if your model uses Optimistic Locking. If your table uses Single Table inheritance,
# then that field is reflected in the versioned model as 'versioned_type' by default.
#
# Acts_as_versioned comes prepared with the ActiveRecord::Acts::Versioned::ActMethods::ClassMethods#create_versioned_table
# method, perfect for a migration. It will also create the version column if the main model does not already have it.
#
# class AddVersions < ActiveRecord::Migration
# def self.up
# # create_versioned_table takes the same options hash
# # that create_table does
# Post.create_versioned_table
# end
#
# def self.down
# Post.drop_versioned_table
# end
# end
#
# == Changing What Fields Are Versioned
#
# By default, acts_as_versioned will version all but these fields:
#
# [self.primary_key, inheritance_column, 'version', 'lock_version', versioned_inheritance_column]
#
# You can add or change those by modifying #non_versioned_columns. Note that this takes strings and not symbols.
#
# class Post < ActiveRecord::Base
# acts_as_versioned
# self.non_versioned_columns << 'comments_count'
# end
#
def acts_as_versioned(options = {}, &extension)
# don't allow multiple calls
return if self.included_modules.include?(ActiveRecord::Acts::Versioned::ActMethods)
send :include, ActiveRecord::Acts::Versioned::ActMethods
cattr_accessor :versioned_class_name, :versioned_foreign_key, :versioned_table_name, :versioned_inheritance_column,
:version_column, :max_version_limit, :track_changed_attributes, :version_condition, :version_sequence_name, :non_versioned_columns,
:version_association_options
# legacy
alias_method :non_versioned_fields, :non_versioned_columns
alias_method :non_versioned_fields=, :non_versioned_columns=
class << self
alias_method :non_versioned_fields, :non_versioned_columns
alias_method :non_versioned_fields=, :non_versioned_columns=
end
send :attr_accessor, :changed_attributes
self.versioned_class_name = options[:class_name] || "Version"
self.versioned_foreign_key = options[:foreign_key] || self.to_s.foreign_key
self.versioned_table_name = options[:table_name] || "#{table_name_prefix}#{base_class.name.demodulize.underscore}_versions#{table_name_suffix}"
self.versioned_inheritance_column = options[:inheritance_column] || "versioned_#{inheritance_column}"
self.version_column = options[:version_column] || 'version'
self.version_sequence_name = options[:sequence_name]
self.max_version_limit = options[:limit].to_i
self.version_condition = options[:if] || true
self.non_versioned_columns = [self.primary_key, inheritance_column, 'version', 'lock_version', versioned_inheritance_column]
self.version_association_options = {
:class_name => "#{self.to_s}::#{versioned_class_name}",
:foreign_key => versioned_foreign_key,
:order => 'version',
:dependent => :delete_all
}.merge(options[:association_options] || {})
if block_given?
extension_module_name = "#{versioned_class_name}Extension"
silence_warnings do
self.const_set(extension_module_name, Module.new(&extension))
end
options[:extend] = self.const_get(extension_module_name)
end
class_eval do
has_many :versions, version_association_options do
# finds earliest version of this record
def earliest
@earliest ||= find(:first)
end
# find latest version of this record
def latest
@latest ||= find(:first, :order => 'version desc')
end
end
before_save :set_new_version
after_create :save_version_on_create
after_update :save_version
after_save :clear_old_versions
after_save :clear_changed_attributes
unless options[:if_changed].nil?
self.track_changed_attributes = true
options[:if_changed] = [options[:if_changed]] unless options[:if_changed].is_a?(Array)
options[:if_changed].each do |attr_name|
define_method("#{attr_name}=") do |value|
write_changed_attribute attr_name, value
end
end
end
include options[:extend] if options[:extend].is_a?(Module)
end
# create the dynamic versioned model
const_set(versioned_class_name, Class.new(ActiveRecord::Base)).class_eval do
def self.reloadable? ; false ; end
# find first version before the given version
def self.before(version)
find :first, :order => 'version desc',
:conditions => ["#{original_class.versioned_foreign_key} = ? and version < ?", version.send(original_class.versioned_foreign_key), version.version]
end
# find first version after the given version.
def self.after(version)
find :first, :order => 'version',
:conditions => ["#{original_class.versioned_foreign_key} = ? and version > ?", version.send(original_class.versioned_foreign_key), version.version]
end
def previous
self.class.before(self)
end
def next
self.class.after(self)
end
end
versioned_class.cattr_accessor :original_class
versioned_class.original_class = self
versioned_class.set_table_name versioned_table_name
versioned_class.belongs_to self.to_s.demodulize.underscore.to_sym,
:class_name => "::#{self.to_s}",
:foreign_key => versioned_foreign_key
versioned_class.send :include, options[:extend] if options[:extend].is_a?(Module)
versioned_class.set_sequence_name version_sequence_name if version_sequence_name
end
end
module ActMethods
def self.included(base) # :nodoc:
base.extend ClassMethods
end
# Saves a version of the model if applicable
def save_version
save_version_on_create if save_version?
end
# Saves a version of the model in the versioned table. This is called in the after_save callback by default
def save_version_on_create
rev = self.class.versioned_class.new
self.clone_versioned_model(self, rev)
rev.version = send(self.class.version_column)
rev.send("#{self.class.versioned_foreign_key}=", self.id)
rev.save
end
# Clears old revisions if a limit is set with the :limit option in <tt>acts_as_versioned</tt>.
# Override this method to set your own criteria for clearing old versions.
def clear_old_versions
return if self.class.max_version_limit == 0
excess_baggage = send(self.class.version_column).to_i - self.class.max_version_limit
if excess_baggage > 0
sql = "DELETE FROM #{self.class.versioned_table_name} WHERE version <= #{excess_baggage} AND #{self.class.versioned_foreign_key} = #{self.id}"
self.class.versioned_class.connection.execute sql
end
end
# Reverts a model to a given version. Takes either a version number or an instance of the versioned model
def revert_to(version)
if version.is_a?(self.class.versioned_class)
return false unless version.send(self.class.versioned_foreign_key) == self.id and !version.new_record?
else
return false unless version = versions.find_by_version(version)
end
self.clone_versioned_model(version, self)
self.send("#{self.class.version_column}=", version.version)
true
end
# Reverts a model to a given version and saves the model.
# Takes either a version number or an instance of the versioned model
def revert_to!(version)
revert_to(version) ? save_without_revision : false
end
# Temporarily turns off Optimistic Locking while saving. Used when reverting so that a new version is not created.
def save_without_revision
save_without_revision!
true
rescue
false
end
def save_without_revision!
without_locking do
without_revision do
save!
end
end
end
# Returns an array of attribute keys that are versioned. See non_versioned_columns
def versioned_attributes
self.attributes.keys.select { |k| !self.class.non_versioned_columns.include?(k) }
end
# If called with no parameters, gets whether the current model has changed and needs to be versioned.
# If called with a single parameter, gets whether the parameter has changed.
def changed?(attr_name = nil)
attr_name.nil? ?
(!self.class.track_changed_attributes || (changed_attributes && changed_attributes.length > 0)) :
(changed_attributes && changed_attributes.include?(attr_name.to_s))
end
# keep old dirty? method
alias_method :dirty?, :changed?
# Clones a model. Used when saving a new version or reverting a model's version.
def clone_versioned_model(orig_model, new_model)
self.versioned_attributes.each do |key|
new_model.send("#{key}=", orig_model.send(key)) if orig_model.has_attribute?(key)
end
if orig_model.is_a?(self.class.versioned_class)
new_model[new_model.class.inheritance_column] = orig_model[self.class.versioned_inheritance_column]
elsif new_model.is_a?(self.class.versioned_class)
new_model[self.class.versioned_inheritance_column] = orig_model[orig_model.class.inheritance_column]
end
end
# Checks whether a new version shall be saved or not. Calls <tt>version_condition_met?</tt> and <tt>changed?</tt>.
def save_version?
version_condition_met? && changed?
end
# Checks condition set in the :if option to check whether a revision should be created or not. Override this for
# custom version condition checking.
def version_condition_met?
case
when version_condition.is_a?(Symbol)
send(version_condition)
when version_condition.respond_to?(:call) && (version_condition.arity == 1 || version_condition.arity == -1)
version_condition.call(self)
else
version_condition
end
end
# Executes the block with the versioning callbacks disabled.
#
# @foo.without_revision do
# @foo.save
# end
#
def without_revision(&block)
self.class.without_revision(&block)
end
# Turns off optimistic locking for the duration of the block
#
# @foo.without_locking do
# @foo.save
# end
#
def without_locking(&block)
self.class.without_locking(&block)
end
def empty_callback() end #:nodoc:
protected
# sets the new version before saving, unless you're using optimistic locking. In that case, let it take care of the version.
def set_new_version
self.send("#{self.class.version_column}=", self.next_version) if new_record? || (!locking_enabled? && save_version?)
end
# Gets the next available version for the current record, or 1 for a new record
def next_version
return 1 if new_record?
(versions.calculate(:max, :version) || 0) + 1
end
# clears current changed attributes. Called after save.
def clear_changed_attributes
self.changed_attributes = []
end
def write_changed_attribute(attr_name, attr_value)
# Convert to db type for comparison. Avoids failing Float<=>String comparisons.
attr_value_for_db = self.class.columns_hash[attr_name.to_s].type_cast(attr_value)
(self.changed_attributes ||= []) << attr_name.to_s unless self.changed?(attr_name) || self.send(attr_name) == attr_value_for_db
write_attribute(attr_name, attr_value_for_db)
end
module ClassMethods
# Finds a specific version of a specific row of this model
def find_version(id, version)
find_versions(id,
:conditions => ["#{versioned_foreign_key} = ? AND version = ?", id, version],
:limit => 1).first
end
# Finds versions of a specific model. Takes an options hash like <tt>find</tt>
def find_versions(id, options = {})
versioned_class.find :all, {
:conditions => ["#{versioned_foreign_key} = ?", id],
:order => 'version' }.merge(options)
end
# Returns an array of columns that are versioned. See non_versioned_columns
def versioned_columns
self.columns.select { |c| !non_versioned_columns.include?(c.name) }
end
# Returns an instance of the dynamic versioned model
def versioned_class
const_get versioned_class_name
end
# Rake migration task to create the versioned table using options passed to acts_as_versioned
def create_versioned_table(create_table_options = {})
# create version column in main table if it does not exist
if !self.content_columns.find { |c| %w(version lock_version).include? c.name }
self.connection.add_column table_name, :version, :integer
end
self.connection.create_table(versioned_table_name, create_table_options) do |t|
t.column versioned_foreign_key, :integer
t.column :version, :integer
end
updated_col = nil
self.versioned_columns.each do |col|
updated_col = col if !updated_col && %(updated_at updated_on).include?(col.name)
self.connection.add_column versioned_table_name, col.name, col.type,
:limit => col.limit,
:default => col.default
end
if type_col = self.columns_hash[inheritance_column]
self.connection.add_column versioned_table_name, versioned_inheritance_column, type_col.type,
:limit => type_col.limit,
:default => type_col.default
end
if updated_col.nil?
self.connection.add_column versioned_table_name, :updated_at, :timestamp
end
end
# Rake migration task to drop the versioned table
def drop_versioned_table
self.connection.drop_table versioned_table_name
end
# Executes the block with the versioning callbacks disabled.
#
# Foo.without_revision do
# @foo.save
# end
#
def without_revision(&block)
class_eval do
CALLBACKS.each do |attr_name|
alias_method "orig_#{attr_name}".to_sym, attr_name
alias_method attr_name, :empty_callback
end
end
block.call
ensure
class_eval do
CALLBACKS.each do |attr_name|
alias_method attr_name, "orig_#{attr_name}".to_sym
end
end
end
# Turns off optimistic locking for the duration of the block
#
# Foo.without_locking do
# @foo.save
# end
#
def without_locking(&block)
current = ActiveRecord::Base.lock_optimistically
ActiveRecord::Base.lock_optimistically = false if current
result = block.call
ActiveRecord::Base.lock_optimistically = true if current
result
end
end
end
end
end
end
ActiveRecord::Base.send :include, ActiveRecord::Acts::Versioned

36
vendor/plugins/acts_as_versioned/test/abstract_unit.rb vendored Normal file
View File

@ -0,0 +1,36 @@
$:.unshift(File.dirname(__FILE__) + '/../../../rails/activesupport/lib')
$:.unshift(File.dirname(__FILE__) + '/../../../rails/activerecord/lib')
$:.unshift(File.dirname(__FILE__) + '/../lib')
require 'test/unit'
require 'active_support'
require 'active_record'
require 'active_record/fixtures'
require 'acts_as_versioned'
config = YAML::load(IO.read(File.dirname(__FILE__) + '/database.yml'))
ActiveRecord::Base.logger = Logger.new(File.dirname(__FILE__) + "/debug.log")
ActiveRecord::Base.configurations = {'test' => config[ENV['DB'] || 'sqlite']}
ActiveRecord::Base.establish_connection(ActiveRecord::Base.configurations['test'])
load(File.dirname(__FILE__) + "/schema.rb")
# set up custom sequence on widget_versions for DBs that support sequences
if ENV['DB'] == 'postgresql'
ActiveRecord::Base.connection.execute "DROP SEQUENCE widgets_seq;" rescue nil
ActiveRecord::Base.connection.remove_column :widget_versions, :id
ActiveRecord::Base.connection.execute "CREATE SEQUENCE widgets_seq START 101;"
ActiveRecord::Base.connection.execute "ALTER TABLE widget_versions ADD COLUMN id INTEGER PRIMARY KEY DEFAULT nextval('widgets_seq');"
end
Test::Unit::TestCase.fixture_path = File.dirname(__FILE__) + "/fixtures/"
$:.unshift(Test::Unit::TestCase.fixture_path)
class Test::Unit::TestCase #:nodoc:
# Turn off transactional fixtures if you're working with MyISAM tables in MySQL
self.use_transactional_fixtures = true
# Instantiated fixtures are slow, but give you @david where you otherwise would need people(:david)
self.use_instantiated_fixtures = false
# Add more helper methods to be used by all tests here...
end

18
vendor/plugins/acts_as_versioned/test/database.yml vendored Normal file
View File

@ -0,0 +1,18 @@
sqlite:
:adapter: sqlite
:dbfile: acts_as_versioned_plugin.sqlite.db
sqlite3:
:adapter: sqlite3
:dbfile: acts_as_versioned_plugin.sqlite3.db
postgresql:
:adapter: postgresql
:username: postgres
:password: postgres
:database: acts_as_versioned_plugin_test
:min_messages: ERROR
mysql:
:adapter: mysql
:host: localhost
:username: rails
:password:
:database: acts_as_versioned_plugin_test

6
vendor/plugins/acts_as_versioned/test/fixtures/authors.yml vendored Normal file
View File

@ -0,0 +1,6 @@
caged:
id: 1
name: caged
mly:
id: 2
name: mly

3
vendor/plugins/acts_as_versioned/test/fixtures/landmark.rb vendored Normal file
View File

@ -0,0 +1,3 @@
class Landmark < ActiveRecord::Base
acts_as_versioned :if_changed => [ :name, :longitude, :latitude ]
end

7
vendor/plugins/acts_as_versioned/test/fixtures/landmark_versions.yml vendored Normal file
View File

@ -0,0 +1,7 @@
washington:
id: 1
landmark_id: 1
version: 1
name: Washington, D.C.
latitude: 38.895
longitude: -77.036667

6
vendor/plugins/acts_as_versioned/test/fixtures/landmarks.yml vendored Normal file
View File

@ -0,0 +1,6 @@
washington:
id: 1
name: Washington, D.C.
latitude: 38.895
longitude: -77.036667
version: 1

10
vendor/plugins/acts_as_versioned/test/fixtures/locked_pages.yml vendored Normal file
View File

@ -0,0 +1,10 @@
welcome:
id: 1
title: Welcome to the weblog
lock_version: 24
type: LockedPage
thinking:
id: 2
title: So I was thinking
lock_version: 24
type: SpecialLockedPage

27
vendor/plugins/acts_as_versioned/test/fixtures/locked_pages_revisions.yml vendored Normal file
View File

@ -0,0 +1,27 @@
welcome_1:
id: 1
page_id: 1
title: Welcome to the weblg
version: 23
version_type: LockedPage
welcome_2:
id: 2
page_id: 1
title: Welcome to the weblog
version: 24
version_type: LockedPage
thinking_1:
id: 3
page_id: 2
title: So I was thinking!!!
version: 23
version_type: SpecialLockedPage
thinking_2:
id: 4
page_id: 2
title: So I was thinking
version: 24
version_type: SpecialLockedPage

13
vendor/plugins/acts_as_versioned/test/fixtures/migrations/1_add_versioned_tables.rb vendored Normal file
View File

@ -0,0 +1,13 @@
class AddVersionedTables < ActiveRecord::Migration
def self.up
create_table("things") do |t|
t.column :title, :text
end
Thing.create_versioned_table
end
def self.down
Thing.drop_versioned_table
drop_table "things" rescue nil
end
end

43
vendor/plugins/acts_as_versioned/test/fixtures/page.rb vendored Normal file
View File

@ -0,0 +1,43 @@
class Page < ActiveRecord::Base
belongs_to :author
has_many :authors, :through => :versions, :order => 'name'
belongs_to :revisor, :class_name => 'Author'
has_many :revisors, :class_name => 'Author', :through => :versions, :order => 'name'
acts_as_versioned :if => :feeling_good? do
def self.included(base)
base.cattr_accessor :feeling_good
base.feeling_good = true
base.belongs_to :author
base.belongs_to :revisor, :class_name => 'Author'
end
def feeling_good?
@@feeling_good == true
end
end
end
module LockedPageExtension
def hello_world
'hello_world'
end
end
class LockedPage < ActiveRecord::Base
acts_as_versioned \
:inheritance_column => :version_type,
:foreign_key => :page_id,
:table_name => :locked_pages_revisions,
:class_name => 'LockedPageRevision',
:version_column => :lock_version,
:limit => 2,
:if_changed => :title,
:extend => LockedPageExtension
end
class SpecialLockedPage < LockedPage
end
class Author < ActiveRecord::Base
has_many :pages
end

16
vendor/plugins/acts_as_versioned/test/fixtures/page_versions.yml vendored Normal file
View File

@ -0,0 +1,16 @@
welcome_2:
id: 1
page_id: 1
title: Welcome to the weblog
body: Such a lovely day
version: 24
author_id: 1
revisor_id: 1
welcome_1:
id: 2
page_id: 1
title: Welcome to the weblg
body: Such a lovely day
version: 23
author_id: 2
revisor_id: 2

7
vendor/plugins/acts_as_versioned/test/fixtures/pages.yml vendored Normal file
View File

@ -0,0 +1,7 @@
welcome:
id: 1
title: Welcome to the weblog
body: Such a lovely day
version: 24
author_id: 1
revisor_id: 1

6
vendor/plugins/acts_as_versioned/test/fixtures/widget.rb vendored Normal file
View File

@ -0,0 +1,6 @@
class Widget < ActiveRecord::Base
acts_as_versioned :sequence_name => 'widgets_seq', :association_options => {
:dependent => :nullify, :order => 'version desc'
}
non_versioned_columns << 'foo'
end

32
vendor/plugins/acts_as_versioned/test/migration_test.rb vendored Normal file
View File

@ -0,0 +1,32 @@
require File.join(File.dirname(__FILE__), 'abstract_unit')
if ActiveRecord::Base.connection.supports_migrations?
class Thing < ActiveRecord::Base
attr_accessor :version
acts_as_versioned
end
class MigrationTest < Test::Unit::TestCase
self.use_transactional_fixtures = false
def teardown
ActiveRecord::Base.connection.initialize_schema_information
ActiveRecord::Base.connection.update "UPDATE schema_info SET version = 0"
Thing.connection.drop_table "things" rescue nil
Thing.connection.drop_table "thing_versions" rescue nil
Thing.reset_column_information
end
def test_versioned_migration
assert_raises(ActiveRecord::StatementInvalid) { Thing.create :title => 'blah blah' }
# take 'er up
ActiveRecord::Migrator.up(File.dirname(__FILE__) + '/fixtures/migrations/')
t = Thing.create :title => 'blah blah'
assert_equal 1, t.versions.size
# now lets take 'er back down
ActiveRecord::Migrator.down(File.dirname(__FILE__) + '/fixtures/migrations/')
assert_raises(ActiveRecord::StatementInvalid) { Thing.create :title => 'blah blah' }
end
end
end

68
vendor/plugins/acts_as_versioned/test/schema.rb vendored Normal file
View File

@ -0,0 +1,68 @@
ActiveRecord::Schema.define(:version => 0) do
create_table :pages, :force => true do |t|
t.column :version, :integer
t.column :title, :string, :limit => 255
t.column :body, :text
t.column :updated_on, :datetime
t.column :author_id, :integer
t.column :revisor_id, :integer
end
create_table :page_versions, :force => true do |t|
t.column :page_id, :integer
t.column :version, :integer
t.column :title, :string, :limit => 255
t.column :body, :text
t.column :updated_on, :datetime
t.column :author_id, :integer
t.column :revisor_id, :integer
end
create_table :authors, :force => true do |t|
t.column :page_id, :integer
t.column :name, :string
end
create_table :locked_pages, :force => true do |t|
t.column :lock_version, :integer
t.column :title, :string, :limit => 255
t.column :type, :string, :limit => 255
end
create_table :locked_pages_revisions, :force => true do |t|
t.column :page_id, :integer
t.column :version, :integer
t.column :title, :string, :limit => 255
t.column :version_type, :string, :limit => 255
t.column :updated_at, :datetime
end
create_table :widgets, :force => true do |t|
t.column :name, :string, :limit => 50
t.column :foo, :string
t.column :version, :integer
t.column :updated_at, :datetime
end
create_table :widget_versions, :force => true do |t|
t.column :widget_id, :integer
t.column :name, :string, :limit => 50
t.column :version, :integer
t.column :updated_at, :datetime
end
create_table :landmarks, :force => true do |t|
t.column :name, :string
t.column :latitude, :float
t.column :longitude, :float
t.column :version, :integer
end
create_table :landmark_versions, :force => true do |t|
t.column :landmark_id, :integer
t.column :name, :string
t.column :latitude, :float
t.column :longitude, :float
t.column :version, :integer
end
end

328
vendor/plugins/acts_as_versioned/test/versioned_test.rb vendored Normal file
View File

@ -0,0 +1,328 @@
require File.join(File.dirname(__FILE__), 'abstract_unit')
require File.join(File.dirname(__FILE__), 'fixtures/page')
require File.join(File.dirname(__FILE__), 'fixtures/widget')
class VersionedTest < Test::Unit::TestCase
fixtures :pages, :page_versions, :locked_pages, :locked_pages_revisions, :authors, :landmarks, :landmark_versions
set_fixture_class :page_versions => Page::Version
def test_saves_versioned_copy
p = Page.create! :title => 'first title', :body => 'first body'
assert !p.new_record?
assert_equal 1, p.versions.size
assert_equal 1, p.version
assert_instance_of Page.versioned_class, p.versions.first
end
def test_saves_without_revision
p = pages(:welcome)
old_versions = p.versions.count
p.save_without_revision
p.without_revision do
p.update_attributes :title => 'changed'
end
assert_equal old_versions, p.versions.count
end
def test_rollback_with_version_number
p = pages(:welcome)
assert_equal 24, p.version
assert_equal 'Welcome to the weblog', p.title
assert p.revert_to!(p.versions.first.version), "Couldn't revert to 23"
assert_equal 23, p.version
assert_equal 'Welcome to the weblg', p.title
end
def test_versioned_class_name
assert_equal 'Version', Page.versioned_class_name
assert_equal 'LockedPageRevision', LockedPage.versioned_class_name
end
def test_versioned_class
assert_equal Page::Version, Page.versioned_class
assert_equal LockedPage::LockedPageRevision, LockedPage.versioned_class
end
def test_special_methods
assert_nothing_raised { pages(:welcome).feeling_good? }
assert_nothing_raised { pages(:welcome).versions.first.feeling_good? }
assert_nothing_raised { locked_pages(:welcome).hello_world }
assert_nothing_raised { locked_pages(:welcome).versions.first.hello_world }
end
def test_rollback_with_version_class
p = pages(:welcome)
assert_equal 24, p.version
assert_equal 'Welcome to the weblog', p.title
assert p.revert_to!(p.versions.first), "Couldn't revert to 23"
assert_equal 23, p.version
assert_equal 'Welcome to the weblg', p.title
end
def test_rollback_fails_with_invalid_revision
p = locked_pages(:welcome)
assert !p.revert_to!(locked_pages(:thinking))
end
def test_saves_versioned_copy_with_options
p = LockedPage.create! :title => 'first title'
assert !p.new_record?
assert_equal 1, p.versions.size
assert_instance_of LockedPage.versioned_class, p.versions.first
end
def test_rollback_with_version_number_with_options
p = locked_pages(:welcome)
assert_equal 'Welcome to the weblog', p.title
assert_equal 'LockedPage', p.versions.first.version_type
assert p.revert_to!(p.versions.first.version), "Couldn't revert to 23"
assert_equal 'Welcome to the weblg', p.title
assert_equal 'LockedPage', p.versions.first.version_type
end
def test_rollback_with_version_class_with_options
p = locked_pages(:welcome)
assert_equal 'Welcome to the weblog', p.title
assert_equal 'LockedPage', p.versions.first.version_type
assert p.revert_to!(p.versions.first), "Couldn't revert to 1"
assert_equal 'Welcome to the weblg', p.title
assert_equal 'LockedPage', p.versions.first.version_type
end
def test_saves_versioned_copy_with_sti
p = SpecialLockedPage.create! :title => 'first title'
assert !p.new_record?
assert_equal 1, p.versions.size
assert_instance_of LockedPage.versioned_class, p.versions.first
assert_equal 'SpecialLockedPage', p.versions.first.version_type
end
def test_rollback_with_version_number_with_sti
p = locked_pages(:thinking)
assert_equal 'So I was thinking', p.title
assert p.revert_to!(p.versions.first.version), "Couldn't revert to 1"
assert_equal 'So I was thinking!!!', p.title
assert_equal 'SpecialLockedPage', p.versions.first.version_type
end
def test_lock_version_works_with_versioning
p = locked_pages(:thinking)
p2 = LockedPage.find(p.id)
p.title = 'fresh title'
p.save
assert_equal 2, p.versions.size # limit!
assert_raises(ActiveRecord::StaleObjectError) do
p2.title = 'stale title'
p2.save
end
end
def test_version_if_condition
p = Page.create! :title => "title"
assert_equal 1, p.version
Page.feeling_good = false
p.save
assert_equal 1, p.version
Page.feeling_good = true
end
def test_version_if_condition2
# set new if condition
Page.class_eval do
def new_feeling_good() title[0..0] == 'a'; end
alias_method :old_feeling_good, :feeling_good?
alias_method :feeling_good?, :new_feeling_good
end
p = Page.create! :title => "title"
assert_equal 1, p.version # version does not increment
assert_equal 1, p.versions(true).size
p.update_attributes(:title => 'new title')
assert_equal 1, p.version # version does not increment
assert_equal 1, p.versions(true).size
p.update_attributes(:title => 'a title')
assert_equal 2, p.version
assert_equal 2, p.versions(true).size
# reset original if condition
Page.class_eval { alias_method :feeling_good?, :old_feeling_good }
end
def test_version_if_condition_with_block
# set new if condition
old_condition = Page.version_condition
Page.version_condition = Proc.new { |page| page.title[0..0] == 'b' }
p = Page.create! :title => "title"
assert_equal 1, p.version # version does not increment
assert_equal 1, p.versions(true).size
p.update_attributes(:title => 'a title')
assert_equal 1, p.version # version does not increment
assert_equal 1, p.versions(true).size
p.update_attributes(:title => 'b title')
assert_equal 2, p.version
assert_equal 2, p.versions(true).size
# reset original if condition
Page.version_condition = old_condition
end
def test_version_no_limit
p = Page.create! :title => "title", :body => 'first body'
p.save
p.save
5.times do |i|
assert_page_title p, i
end
end
def test_version_max_limit
p = LockedPage.create! :title => "title"
p.update_attributes(:title => "title1")
p.update_attributes(:title => "title2")
5.times do |i|
assert_page_title p, i, :lock_version
assert p.versions(true).size <= 2, "locked version can only store 2 versions"
end
end
def test_track_changed_attributes_default_value
assert !Page.track_changed_attributes
assert LockedPage.track_changed_attributes
assert SpecialLockedPage.track_changed_attributes
end
def test_version_order
assert_equal 23, pages(:welcome).versions.first.version
assert_equal 24, pages(:welcome).versions.last.version
end
def test_track_changed_attributes
p = LockedPage.create! :title => "title"
assert_equal 1, p.lock_version
assert_equal 1, p.versions(true).size
p.title = 'title'
assert !p.save_version?
p.save
assert_equal 2, p.lock_version # still increments version because of optimistic locking
assert_equal 1, p.versions(true).size
p.title = 'updated title'
assert p.save_version?
p.save
assert_equal 3, p.lock_version
assert_equal 1, p.versions(true).size # version 1 deleted
p.title = 'updated title!'
assert p.save_version?
p.save
assert_equal 4, p.lock_version
assert_equal 2, p.versions(true).size # version 1 deleted
end
def assert_page_title(p, i, version_field = :version)
p.title = "title#{i}"
p.save
assert_equal "title#{i}", p.title
assert_equal (i+4), p.send(version_field)
end
def test_find_versions
assert_equal 2, locked_pages(:welcome).versions.size
assert_equal 1, locked_pages(:welcome).versions.find(:all, :conditions => ['title LIKE ?', '%weblog%']).length
assert_equal 2, locked_pages(:welcome).versions.find(:all, :conditions => ['title LIKE ?', '%web%']).length
assert_equal 0, locked_pages(:thinking).versions.find(:all, :conditions => ['title LIKE ?', '%web%']).length
assert_equal 2, locked_pages(:welcome).versions.length
end
def test_with_sequence
assert_equal 'widgets_seq', Widget.versioned_class.sequence_name
3.times { Widget.create! :name => 'new widget' }
assert_equal 3, Widget.count
assert_equal 3, Widget.versioned_class.count
end
def test_has_many_through
assert_equal [authors(:caged), authors(:mly)], pages(:welcome).authors
end
def test_has_many_through_with_custom_association
assert_equal [authors(:caged), authors(:mly)], pages(:welcome).revisors
end
def test_referential_integrity
pages(:welcome).destroy
assert_equal 0, Page.count
assert_equal 0, Page::Version.count
end
def test_association_options
association = Page.reflect_on_association(:versions)
options = association.options
assert_equal :delete_all, options[:dependent]
assert_equal 'version', options[:order]
association = Widget.reflect_on_association(:versions)
options = association.options
assert_equal :nullify, options[:dependent]
assert_equal 'version desc', options[:order]
assert_equal 'widget_id', options[:foreign_key]
widget = Widget.create! :name => 'new widget'
assert_equal 1, Widget.count
assert_equal 1, Widget.versioned_class.count
widget.destroy
assert_equal 0, Widget.count
assert_equal 1, Widget.versioned_class.count
end
def test_versioned_records_should_belong_to_parent
page = pages(:welcome)
page_version = page.versions.last
assert_equal page, page_version.page
end
def test_unchanged_attributes
landmarks(:washington).attributes = landmarks(:washington).attributes.except("id")
assert !landmarks(:washington).changed?
end
def test_unchanged_string_attributes
landmarks(:washington).attributes = landmarks(:washington).attributes.except("id").inject({}) { |params, (key, value)| params.update(key => value.to_s) }
assert !landmarks(:washington).changed?
end
def test_should_find_earliest_version
assert_equal page_versions(:welcome_1), pages(:welcome).versions.earliest
end
def test_should_find_latest_version
assert_equal page_versions(:welcome_2), pages(:welcome).versions.latest
end
def test_should_find_previous_version
assert_equal page_versions(:welcome_1), page_versions(:welcome_2).previous
assert_equal page_versions(:welcome_1), pages(:welcome).versions.before(page_versions(:welcome_2))
end
def test_should_find_next_version
assert_equal page_versions(:welcome_2), page_versions(:welcome_1).next
assert_equal page_versions(:welcome_2), pages(:welcome).versions.after(page_versions(:welcome_1))
end
end