rdoc/.tmp_index.html.72103~ rdoc/classes/ActsAsRandomId.html rdoc/classes/ActsAsRandomId/ClassMethods.html rdoc/classes/ActsAsRandomId/InstanceMethods.html rdoc/created.rid rdoc/files/README.html rdoc/files/lib/acts_as_random_id_rb.html rdoc/fr_class_index.html rdoc/fr_file_index.html rdoc/fr_method_index.html rdoc/index.html rdoc/rdoc-style.css @@ -7,8 +7,16 @@ Generating unique random id for ActiveRecord models Example ======= -class Comment < ActiveRecord::Base - acts_as_random_id -end + class Comment < ActiveRecord::Base + acts_as_random_id + end + + class Group < ActiveRecord::Base + acts_as_random_id :generator => :auto_increment + end + + class Article < ActiveRecord::Base + acts_as_random_id :generator => Proc.new { Time.now.to_i } + end Copyright (c) 2009 hashtrain.com, released under the MIT license README @@ -20,7 +20,7 @@ end desc 'Generate documentation for the acts_as_random_id plugin.' Rake::RDocTask.new(:rdoc) do |rdoc| rdoc.rdoc_dir = 'rdoc' - rdoc.title = 'ActAsRandomId' + rdoc.title = 'ActsAsRandomId' rdoc.options << '--line-numbers' << '--inline-source' rdoc.rdoc_files.include('README') rdoc.rdoc_files.include('lib/**/*.rb') @@ -38,7 +38,7 @@ PKG_FILES = FileList[ spec = Gem::Specification.new do |s| s.name = "acts_as_random_id" - s.version = "0.0.1" + s.version = "0.1.2" s.author = "hashtrain.com and author idea Stanislav Pogrebnyak" s.email = "mail@hashtrain.com" s.homepage = "http://hashtrain.com/" Rakefile @@ -1,19 +1,3 @@ -# ActsAsRandomId -# Generate unique ID: XXXXXXYYYYY -# -# where -# - XXXXXX - result returned on request SELECT max (primary_key) FROM table_name minus 5 right numbers (YYYYY) plus rand (20) - get the next increment value -# - YYYYY - the result of the function rand (first 5 or last 5 numbers) -# -# So we will always have 1 extra SQL and a unique id of the object -# The model will look like this: -# -# class Comment <ActiveRecord:: Base -# Act_as_random_id # this plugin -# end -# -# When a pattern is not broken at the connection object and it will work with all known me DB - module ActsAsRandomId def self.included(base) base.send :extend, ClassMethods @@ -21,36 +5,34 @@ module ActsAsRandomId module ClassMethods def acts_as_random_id(options = {}) - cattr_accessor :random_id_type, :random_id_step + cattr_accessor :random_id_generator before_create :generate_random_id - self.random_id_type = (options[:type] || :auto_increment) - self.random_id_step = (options[:step] || 10).to_i - self.random_id_step = 1 if self.random_id_step <= 0 + self.random_id_generator = (options[:generator] || :random_id) def generate_random_id - case self.random_id_type - when :auto_increment - auto_increment + if self.random_id_generator.is_a?(Proc) + self.random_id_generator.call + elsif self.random_id_generator == :auto_increment + self.auto_increment else - indentation_right + self.random_id end end - + + protected def auto_increment - max_id = ActiveRecord::Base.connection.select_value("SELECT max(#{self.primary_key}) FROM #{self.table_name}").to_i - max_id + self.random_id_step + current_id = ActiveRecord::Base.connection.select_value("SELECT max(#{self.primary_key}) FROM #{self.table_name}").to_i + current_id += rand(10) + 1 end - - def indentation_right - max_id = ActiveRecord::Base.connection.select_value("SELECT max(#{self.primary_key}) FROM #{self.table_name}") - max_id_size = max_id.to_s.size - current_auto_incriment = (max_id_size > 5) ? max_id.to_s.first(max_id_size - 5).to_i : max_id.to_i - new_auto_incriment = (current_auto_incriment + rand(self.random_id_step) + 1).to_i - new_id = (new_auto_incriment.to_s + rand.to_s.last(5).to_s).to_i - new_id + + def random_id + begin + rand_id = rand(2_147_483_647) + 1 #- mysql type "int 4 bytes" + end until ActiveRecord::Base.connection.select_value("SELECT #{self.primary_key} FROM #{self.table_name} WHERE #{self.primary_key} = #{rand_id}").blank? + rand_id end - + send :include, InstanceMethods end end lib/acts_as_random_id.rb @@ -1,4 +1,4 @@ # desc "Explaining what the task does" -# task :act_as_random_id do +# task :acts_as_random_id do # # Task goes here # end tasks/acts_as_random_id_tasks.rake @@ -7,20 +7,35 @@ class ActsAsRandomIdTest < Test::Unit::TestCase class Comment < ActiveRecord::Base acts_as_random_id end + + class Group < ActiveRecord::Base + acts_as_random_id :generator => :auto_increment + end + + class Article < ActiveRecord::Base + acts_as_random_id :generator => Proc.new { Time.now.to_i } + end def test_should_empty assert_equal [], Comment.all end - - def test_shouul_create_with_rundom_id - last_id = 0 + + def test_type_random_id + assert Comment.generate_random_id + assert Comment.create + end + + def test_type_auto_incriment + assert Group.generate_random_id + g1 = Group.create + g2 = Group.create - 9.times do |i| - c = Comment.create(:comment => "comment_text_#{i}") - assert false unless c.id > last_id - last_id = c.id - end - assert true + assert g1.id < g2.id + end + + def test_generator_proc + puts Article.generate_random_id + assert Article.generate_random_id end end test/acts_as_random_id_test.rb @@ -2,7 +2,18 @@ ActiveRecord::Schema.define(:version => 20090217091952) do create_table "comments", :force => true do |t| t.text "comment" - t.integer "user_id" + t.datetime "created_at" + t.datetime "updated_at" + end + + create_table "groups", :force => true do |t| + t.string "name" + t.datetime "created_at" + t.datetime "updated_at" + end + + create_table "articles", :force => true do |t| + t.text "content" t.datetime "created_at" t.datetime "updated_at" end test/schema.rb pkg/act_as_random_id-0.0.1.gem 61b04d4811367ef005e162364032ba7984927bb9 Shaliko Usubov shaliko@ezid.ru http://github.com/hashtrain/acts_as_random_id/commit/83b5637b0c245985c85c08776e57a8c37e8a03f1 83b5637b0c245985c85c08776e57a8c37e8a03f1 2009-04-26T03:12:05-07:00 2009-04-26T03:12:05-07:00 Version 0.1.2 8fd67353b2312a6630ef81ab322013e55c6eed30 Shaliko Usubov shaliko@ezid.ru