require 'fileutils'
File.open("result.csv", File::CREAT|File::RDWR) do |csv_file|
Dir["JSPs/**/*.jsp"].each do |file|
lines = File.readlines(file)
csv_file << "#{file}\t#{lines.length}\n"
end
end
irb(main):001:0> require 'rubygems'
=> true
irb(main):002:0> require 'mongo'
=> true
irb(main):004:0> m = Mongo::Connection.new
=> #
irb(main):005:0> m.database_names.each { |name| puts name }
local
admin
my_db
=> ["local", "admin", "my_db"]
irb(main):008:0> db = Mongo::Connection.new.db("my_db")
=> #
irb(main):009:0> db.collection_names.each { |name| puts name }
people
system.indexes
=> ["people", "system.indexes"]
irb(main):011:0> coll = db["people"]
irb(main):012:0> coll.find.each { |item| puts item.inspect }
(...)
{"_id"=>ObjectID('4ba96c2360d99e0ba1000019'), "birthdate"=>nil, "phone_numbers"=>[],
"last_name"=>"bar2", "login"=>"foobar2", "password"=>"secret", "first_name"=>"foo2"}
=> nil
C:\>gem update watir --debug
Exception `NameError' at c:/ruby/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:161 - uninitialized constant Gem::Commands::UpdateCommand
Exception `Gem::LoadError' at c:/ruby/lib/ruby/site_ruby/1.8/rubygems.rb:827 - Could not find RubyGem test-unit (>= 0)
Updating installed gems
Exception `Gem::LoadError' at c:/ruby/lib/ruby/site_ruby/1.8/rubygems.rb:827 - RubyGem version error: sources(0.0.1 not > 0.0.1)
Exception `Zlib::BufError' at c:/ruby/lib/ruby/site_ruby/1.8/rubygems.rb:578 - buffer error
ERROR: While executing gem ... (Zlib::BufError)
buffer error
c:/ruby/lib/ruby/site_ruby/1.8/rubygems.rb:578:in `read'
c:/ruby/lib/ruby/site_ruby/1.8/rubygems.rb:578:in `gunzip'
c:/ruby/lib/ruby/site_ruby/1.8/rubygems/remote_fetcher.rb:165:in `fetch_path'
c:/ruby/lib/ruby/site_ruby/1.8/rubygems/spec_fetcher.rb:219:in `load_specs'
c:/ruby/lib/ruby/site_ruby/1.8/rubygems/spec_fetcher.rb:192:in `list'
c:/ruby/lib/ruby/site_ruby/1.8/rubygems/spec_fetcher.rb:188:in `each'
c:/ruby/lib/ruby/site_ruby/1.8/rubygems/spec_fetcher.rb:188:in `list'
c:/ruby/lib/ruby/site_ruby/1.8/rubygems/spec_fetcher.rb:123:in `find_matching'
c:/ruby/lib/ruby/site_ruby/1.8/rubygems/commands/update_command.rb:169:in `which_to_update'
c:/ruby/lib/ruby/site_ruby/1.8/rubygems/commands/update_command.rb:161:in `each'
c:/ruby/lib/ruby/site_ruby/1.8/rubygems/commands/update_command.rb:161:in `which_to_update'
c:/ruby/lib/ruby/site_ruby/1.8/rubygems/commands/update_command.rb:75:in `execute'
c:/ruby/lib/ruby/site_ruby/1.8/rubygems/command.rb:257:in `invoke'
c:/ruby/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:132:in `process_args'
c:/ruby/lib/ruby/site_ruby/1.8/rubygems/command_manager.rb:102:in `run'
c:/ruby/lib/ruby/site_ruby/1.8/rubygems/gem_runner.rb:58:in `run'
c:/ruby/bin/gem:21
gem server
gem install watir --source http://xxx.xxx.xxx.xxx:8808/
b = 'azerty' for x in b: print(x)
>>> word = 'Help' + 'A' >>> word[4] 'A' >>> word[0:2] 'He' >>> word[2:4] 'lp' >>> word[:2] # The first two characters 'He' >>> word[2:] # Everything except the first two characters 'lpA'
for x in range(2, n): if n % x == 0: print(n, 'equals', x, '*', n//x) break else: # loop fell through without finding a factor print(n, 'is a prime number')Les moins
python: len('azerty')
ruby: 'azerty'.size
Like Smalltalk, everything in Ruby is fungible (this is the very thing that makes dynamic languages so scary to folks who are used to static languages)
Contents
* The Shape of Our Projects
* Questions About Ruby
o Was Ruby the Right Choice?
o Is Ruby More Productive?
o Is Ruby Slow?
o Is a Ruby Code-base Hard to Understand?
o Is Ruby a Viable Platform
* Some Development Tips
o Testing with Active Record
o Active Record Leaks
o Long Running Requests
o Deployment
o Controlling Gems
o Schedule Time for Updates
o Developing on Windows
Dir["folder/foo_*.txt"].each do |path|
cmd = "echo #{path}"
exec(cmd)
end
Dir["folder/foo_*.txt"].each do |path|
cmd = "echo #{path}"
system(cmd)
end
require 'fileutils.rb'
Dir['**/*.kml'].each do |file|
puts file
filename = file.split('.')[0]
# FileUtils.cp("#{filename}.kml", "#{filename}.xml")
# FileUtils.mv("#{filename}.kml", "#{filename}.xml")
end
old_job = "anyware"
puts "old job: #{old_job}"
magic = 345756
new_job = old_job[0, 1]
magic.times {|j| new_job = new_job.next}
puts "new job: #{new_job.upcase}"
module Carnivore
def self.manger(oiseau)
puts "slurp! #{oiseau}"
end
end
class GrosMinet
include Carnivore
end
Carnivore.manger "titi" # ok ca foncionnne
GrosMinet.manger "titi" # undefined method `manger' for GrosMinet:Class (NoMethodError) WTF ?!
module NaturalSort
def self.naturalsort(object)
...
end
def natural_sort
NaturalSort::naturalsort(to_a)
end
end
module Carnivore
def self.manger(oiseau)
puts "slurp! #{oiseau}"
end
end
Carnivore.manger "titi"
module Carnivore
def manger(oiseau)
puts "slurp! #{oiseau}"
end
end
class GrosMinet
include Carnivore
end
gros_minet = GrosMinet.new
gros_minet.manger "titi"
module Carnivore
def manger(oiseau)
puts "slurp! #{oiseau}"
end
end
module Chat
def miauler
puts "miaou..."
end
end
class GrosMinet
include Chat
# include Carnivore # necessaire à gros_minet.manger("titi")
extend Carnivore
end
GrosMinet.manger "titi"
gros_minet = GrosMinet.new
gros_minet.miauler
# gros_minet.manger "titi" # necessite le include Carnivore pour fonctionner
Conclusion: Ca fonctionne et le code est court mais je trouve la syntax un peut étrange, je ne comprend pas trop pourquoi le 'include' n'inclus pas les méthodes 'self' ? il y a quelquechose qui m'échappe pour l'instant...
Du coup je pense que c'est une bonne pratique de ne pas utiliser de méthodes préfixé par 'self' dans le modules et que faire MonModule.ma_methode n'est peut-être pas très orienté objet... après tout les modules ne sont pas vraiment des objets et ne devraient pas être utilisés seuls ? Qu'est ce que vous en pensez ?
# Ajax response for validation
def validate_new_holiday
@holiday = self.init_holiday
respond_to do |format|
format.js # validate_new_holiday.js.rjs
end
end
Je ne l'ai pas dit dans mon post précédent tellement ça me paraissait évident, mais utiliser systématiquement subversion (ou un autre système: cvs, git...) pour pouvoir revenir en arrière. C'est indispensable !!
> rake rails:unfreeze > svn delete vendor/rails > gem list rails *** LOCAL GEMS *** rails (1.2.6) > gem update rails Successfully installed rails-2.0.2 1 gem installed Gems updated: rails > gem list rails *** LOCAL GEMS *** rails (2.0.2, 1.2.6) > edit config/environment.rb
Changer
RAILS_GEM_VERSION = '1.2.6' unless defined? RAILS_GEM_VERSION
En:
RAILS_GEM_VERSION = '2.0.2' unless defined? RAILS_GEM_VERSION
>ruby script\about
*******************************************************************
* config.breakpoint_server has been deprecated and has no effect. *
*******************************************************************
About your application's environment
Ruby version 1.8.6 (i386-mswin32)
RubyGems version 1.0.1
Rails version 2.0.2
Active Record version 2.0.2
Action Pack version 2.0.2
Active Resource version 2.0.2
Action Mailer version 2.0.2
Active Support version 2.0.2
Application root C:/developement/ruby/appli
Environment development
Database adapter mysql
Database schema version 8
Si vous avez le même warning que moi, éditer le fichier development.rb et enlevé les lignes suivantes:
# Enable the breakpoint server that script/breakpointer connects to config.breakpoint_server = truepuis installer ruby-debug comme expliqué ici: Fixing-config-breakpoint-server
> rake rails:update modifie config/boot.rb public/javascripts/control.js public/javascripts/dragdrop.js public/javascripts/effects.js public/javascripts/prototype.js > rake log:clear tmp:clear db:test:purge
Editer database.yml J'aime bien ajouter l'encoding pour MySql:
development:
adapter: mysql
*encoding: utf8* (sans les étoiles autour ;) )
database: appli_development
username: appli
password: appli
host: localhost
> rake db:reset
(optionnel ?)
> rake db:migrate:reset
...
m à j de db/schema.rb
> rake test
...
36 tests, 95 assertions, 0 failures, 0 errors
...
33 tests, 63 assertions, 0 failures, 0 errors
> ruby script/server
=> Booting Mongrel (use 'script/server webrick' to force WEBrick)
=> Rails application starting on http://0.0.0.0:3000
=> Call with -d to detach
=> Ctrl-C to shutdown server
** Starting Mongrel listening at 0.0.0.0:3000
** Starting Rails with development environment...
** Rails loaded.
** Loading any Rails specific GemPlugins
** Signals ready. INT => stop (no restart).
** Mongrel 1.1.4 available at 0.0.0.0:3000
** Use CTRL-C to stop.
/!\ FAILSAFE /!\ Tue Mar 18 10:16:56 +0100 2008
Status: 500 Internal Server Error
A secret is required to generate an integrity hash for cookie session data. Use config.action_controller.session = { :session_key =>
"_mya
pp_session", :secret => "some secret phrase of at least 30 characters" } in config/environment.rb
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/session/cookie_store.rb:91:in `ensure_secret_secure'
c:/ruby/lib/ruby/gems/1.8/gems/actionpack-2.0.2/lib/action_controller/session/cookie_store.rb:60:in `initialize'
...
http://localhost:3000/ retourne une erreur 500
Le plus simple que j'ai trouvé c'est de créer une nouvelle appli rails à côté:
> rails dummy
Remplacer le contenu de appli/config/environment.rb par celui de dummy (en garder une copie qq part)
> rake secret
Remplacer la ligne suivante:
config.action_controller.session = {
:session_key => '_dummy_session',
:secret => '1234abcde'
}
config.action_controller.session = {
:session_key => '_appli_session',
:secret => 'secret generé par la commande rake secret'
}
ActionMailer::Base.smtp_settings = {
:address => 'smtp.truc.com',
:port => '25',
:domain => 'www.truc.com'
}
> rake test ... > svn commit -m "updating to rails 2.0.2" > rake rails:freeze:gems ... > svn add vendor/rails > rake deprecated ... > ruby script/plugin remove deprecated ... inutile maintenant > svn commit -m "freezing rails 2.0.2" > gem uninstall rails --version 1.2.6
A partir de là vous avez fait l'essentiel!!
Vous pouvez rentrer chez vous après une dure journée de labeur... ou bien fignoler le travail
Créer un fichier migrate_views.rb à la racine de l'appli: Ajouter:
Dir.glob('app/views/**/*.rhtml').each do |file|
puts `svn mv #{file} #{file.gsub(/\.rhtml$/, '.html.erb')}`
end
> ruby migrate_views.rb A app\views\layouts\application.html.erb D app\views\layouts\application.rhtml ... > rake test ... > ruby script/server ... Tester l'appli
Ajouter à production.rb
config.action_view.cache_template_loading = true
# Disable request forgery protection in test environment config.action_controller.allow_forgery_protection = falseConcernant routes.rb, je n'ai pas de solution miracle :(
map.connect ':controller/service.wsdl', :action => 'wsdl'
Dans test_helper.rb, on peut ajouter:
# The only drawback to using transactional fixtures is when you actually # need to test transactions. Since your test is bracketed by a transaction, # any transactions started in your code will be automatically rolled back.juste avant
self.use_transactional_fixtures = true
# Setup all fixtures in test/fixtures/*.(yml|csv) for all tests in alphabetical order. # # Note: You'll currently still have to declare fixtures explicitly in integration tests # -- they do not yet inherit this setting fixtures :all
Si vous avez un script/breakpointer je pense que vous pouvez le supprimer...
Vous pouvez aussi changer tous vos fichiers dans db/migrate pour utiliser la nouvelle syntaxe des migrations (optionnel)
Il y a plein d'autre améliorations possibles dans les controller, dans les fixtures etc... cf: rails-2-0-it-s-done
Et Voilà ! Votre appli est migrée en Rails 2.0.2! Félicitations ;)
Comment migrer "Pas à pas" une application ruby on rails de 1.2.2 vers 1.2.6 (Nous verrons de 1.2.6 à 2.0.2 dans un autre post).
Extrait du blog officiel de Ruby on Rails:So how do I upgrade? If you want to move your application to Rails 2.0, you should first move it to Rails 1.2.6. That’ll include deprecation warnings for most everything we yanked out in 2.0. So if your application runs fine on 1.2.6 with no deprecation warnings, there’s a good chance that it’ll run straight up on 2.0. Of course, if you’re using, say, pagination, you’ll need to install the classic_pagination plugin. If you’re using Oracle, you’ll need to install the activerecord-oracle-adapter gem. And so on and so forth for all the extractions.
> ruby script\about About your application's environment Ruby version 1.8.6 (i386-mswin32) RubyGems version 1.0.1 Rails version 1.2.2 Active Record version 1.15.2 Action Pack version 1.13.2 Action Web Service version 1.2.2 Action Mailer version 1.3.2 Active Support version 1.4.1 Edge Rails revision 64 Application root C:/developement/ruby/prophet/trunk/prophet Environment development Database adapter mysql Database schema version 8 > rake rails:unfreeze > gem install rails --version 1.2.6 > gem list rails *** LOCAL GEMS *** rails (2.0.2, 1.2.6) > edit appli/config/environment.rb Changer: RAILS_GEM_VERSION = '1.2.2' unless defined? RAILS_GEM_VERSION En: RAILS_GEM_VERSION = '1.2.6' unless defined? RAILS_GEM_VERSION > rake rails:update:configs modifie config/boot.rb > rake rails:update:javascripts modifie rien ? > rake rails:update:scripts modifie rien ? > rake log:clear tmp:clear db:test:purge > ruby script\about About your application's environment Ruby version 1.8.6 (i386-mswin32) RubyGems version 1.0.1 Rails version 1.2.6 Active Record version 1.15.6 Action Pack version 1.13.6 Action Web Service version 1.2.6 Action Mailer version 1.3.6 Active Support version 1.4.4 Application root C:/developement/ruby/prophet/trunk/prophet Environment development Database adapter mysql Database schema version 8 > rake test ... 36 tests, 95 assertions, 0 failures, 0 errors ... 33 tests, 63 assertions, 0 failures, 0 errors > ruby script\server => Booting Mongrel (use 'script/server webrick' to force WEBrick) => Rails application starting on http://0.0.0.0:3000 => Call with -d to detach => Ctrl-C to shutdown server ** Starting Mongrel listening at 0.0.0.0:3000 ** Starting Rails with development environment... ** Rails loaded. ** Loading any Rails specific GemPlugins ** Signals ready. INT => stop (no restart). ** Mongrel 1.1.4 available at 0.0.0.0:3000 ** Use CTRL-C to stop. March 17, 2008 17:39 -- ...Regarder dans les logs s'il y a des "DEPRECATION WARNING"
> ruby script/plugin install http://topfunky.net/svn/plugins/deprecated + ./deprecated/CHANGELOG + ./deprecated/MIT-LICENSE + ./deprecated/README + ./deprecated/about.yml + ./deprecated/tasks/deprecated.rake > rake deprecated (in C:/.../app) --> component Clean! Cheers for you! --> @session Clean! Cheers for you! --> paginate Clean! Cheers for you! ...S'il n'y a que des "Clean" c'est que tout va bien :)
> svn cleanup . (optionnel ?) > svn commit -m "upgrading to 1.2.6" > rake rails:freeze:gems (in C:/developement/ruby/prophet/trunk/prophet) Freezing to the gems for Rails 1.2.6 rake aborted! uninitialized constant Gem::GemRunner (See full trace by running task with --trace) >gem update --system ...
> gem list rails *** LOCAL GEMS *** rails (2.0.2, 1.2.6)
> rake rails:freeze:gems VERSION=1.2.6 Maintenant ça devrait marcher... > svn add vendor/rails > svn commit -m "freezing to 1.2.6"
GRANT ALL ON appli_production.* TO 'appli'@'localhost' IDENTIFIED BY 'appli';
c:\...\appli> jruby -S gem install -y rails warbler
c:\...\appli> jruby -S rake db:migrate RAILS_ENV=production
c:\...\appli> jruby -S rake db:structure:dump RAILS_ENV=production
c:\...\appli> jruby -S warble war
c:\...\appli> jruby -S warble config
Avec la commande "db:structure:dump", on a généré un fichier: production_structure.sql (utilisé par Mr. A)
<context-param>
<param-name>jruby.session_store</param-name>
<param-value>db</param-value>
</context-param>
c:\...\appli> jruby -S rake rails:freeze
c:\...\appli> jruby -S warble pluginize
c:\...\appli> jruby -S warble war:clean
c:\...\appli> jruby -S warble war
CREATE SCHEMA appli_production;
GRANT ALL ON appli_production.* TO 'appli'@'localhost' IDENTIFIED BY 'appli';
names = ""
for user in users
names << "#{user.user_username} "
end
return names.chomp
names = users.collect { |user| user.user_username}
return names.join(' ')
def assert(*msg)
raise "Assertion failed ! #{msg}" unless yield if $DEBUG
end
$DEBUG = true
i = 0
assert("mon msg") {i == 1}
Exception `RuntimeError' at assert.rb:2 - Assertion failed ! mon msg
assert.rb:2:in `assert': Assertion failed ! mon msg (RuntimeError)
from assert.rb:7
source: dzone.comC:\...>ruby --version ruby 1.8.6 (2007-03-13 patchlevel 0) [i386-mswin32] C:\...>rails --version Rails 2.0.2
require 'digest/md5'
hash = Digest::MD5.hexdigest(password)
class ApplicationController < ActionController::Base
before_filter :authenticate
protected
def authenticate
authenticate_or_request_with_http_basic do |username, password|
auth = User.auth?(username, password)
if(auth)
session[:auth], session[:username] = true, username
return true
end
return false
end
end
end
require 'digest/md5'
class User < ActiveRecord::Base
# return true if (username and hashed_password) are correct
def self.auth?(username, password)
hashed_password = Digest::MD5.hexdigest(password)
user = User.find(:first,
:conditions => "username='#{username}' and password='#{hashed_password}'" )
logger.info "#{username}/#{hashed_password} > auth? : #{!user.nil?}"
return !user.nil?
end
end
puts IO.readlines('data.txt').uniq
require 'iconv'
class String
def utf16_to_iso
converter = Iconv.new('ISO-8859-1//IGNORE//TRANSLIT', 'UTF-16')
converter.iconv(self)
end
end
content = IO.read("utf16.txt").utf16_to_iso
content.split("\n").each do |line|
do_something(line)
endunless(item.nil? or item.emty?)
...
endunless(item.blank?)
...
end
class NilClass
def blank?
true
end
end
class String
def blank?
to_s.empty?
end
endclass Object
def blank?
respond_to?(:empty?) ? empty? : !self
end
end
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