The first Rails framework was fast. then it become slow, big and the idea of convetion over configuration becomes more poisoned.

Currently to start with Rails you have to learn a lot of stuff which are added just now and is not sure how long they will stay.

Also Rails is not targeting the developers to be fast but is targeting to be the perfect framework.

The price for that is that almost a year and a half there is no new version while the they refactor it.

No goodies like scafolding, only enterprise stuff around.

That is my personal opinion on this framework.

As I like to say – you cant leave your followers without food for such long time.

The original code

<%= select(“city”,”kind”, t(:place_types).map.map!.each{|key, value| [value, key]}, {:include_blank => t(:chose), :selected => @city.kind}) %>

The bad code

t(:place_types).map.map!.each{|key, value| [value, key]}, {:include_blank => t(:chose), :selected => @city.kind})

the replacement

key_values = t(:place_types).collect{|key, value| [value.to_s, key.to_s, ]}

Rails.ouch.ouch.omg!

The idea of the Searchlogic is to save you time and give flexibility.

The first time I saw this gem  I was very excited about it.

With only a few lines of code an you have the whole search done. I have start using it.

Once I want to apply it to a complicated search. The problem was that I have to write more code and “patches” in order to keep the Searchlogic working….

So my advice is – don’t use such boosters if you can apply your own solution. There will be aways a time when you want to extend your search and you will loose a lot of time search how to do it with the 3rd party solution.

Do it yourself.

I have recently upgraded to Ubuntu 10.04 and I got this nasty rmagick gem error:

RMagick2.so: This installation of RMagick was configured with ImageMagick 6.5.5 but ImageMagick 6.5.7-8 is in use. (RuntimeError)

google for This installation of RMagick was configured with ImageMagick 6.5.5 but ImageMagick 6.5.7-8 is in use. (RuntimeError)

then found this page in mixed English/Chinees

and finally got a page in German :)

Then I decide to write this post in English and slightly modify the solution

instead of putting

RMAGICK_BYPASS_VERSION_TEST = true in the deploy.rb

I have put this in the development.rb

and all it works – this way on the production I will be forced to use real compatible library or at least check again for another solution or gem.

AUCH! This solution doesn’t work even in development I got weird core dumps :( …so here it is another try

Here is the real working  solution:

su -
git clone http://github.com/rmagick/rmagick.git
cd rmagick/
ruby setup.rb
ruby setup.rb  install

I have just finished one method and I was not happy with the code. Then I put a comment on top of the method “Far from perfect….”.

Then I read the class – it was ugly.

here is the before

def validate
 return if is_email == false
 found = InternetComunicatorType.find(:first, :conditions => {
 :is_email => true,
 })

 return unless found

 if found.id != id
 errors.add(:is_email, "We have already email type")
 return
 end
end

here is the after

def validate
  if is_email
    found = InternetComunicatorType.find(:first, :conditions => {
      :is_email => true,
    })

    if found and found.id != id
      errors.add(:is_email, "We have already email type")
    end
  end
end

The result is much far readable

When starting with mongoid I have missed a lot some demo source code.

How it works with controllers, does it plays nice with nested attributes, such things.

Here is presentation of mongo  and here are some slides

I writing this post for those who start using Mongo in their rails applications. I want to share my experience. First I discovered mongoid but then i saw mongo_mapper  – so I decide to go with the crowd. But! I was wrong. I there is no documentation for mongo_mapper but some blog posts arround, the examples are not aways working and you have to fight with all the code – I don’t maybe I have found some old documentation. When you dive in the code – again no documentation and not clear behaviour. Maybe it is a good solution but for me it doesn’t work. I lost 1.5 days experimenting and hoping that the things will go.

Then I give a try with mongoid. It has wonderfull documentation for starters also it seems at first glance that the code in mongoid is more readably and human friendly. It took me 2hours to port all my models to mongoid.

The guy developing mongoid seems pretty active.

last words – it is pleasure to work with mongoid – I recommend it to all.

get the gem from here

http://github.com/timcharper/spork

How to fix the Missing error

http://chrisblunt.com/blog/2009/08/28/rails-configuring-rspec-for-spork/

Finally our twitterized version of psspy.se is ready. But! When in production – read with many connection – the memcached get overloaded by not closed connections and on 1024 it says

“accept(): Too many open file” and memcached dies.

After 1 day investigating the problem  we have found that the following line in the initializers is causing the problem

RAILS_DEFAULT_LOGGER.level = Logger::DEBUG

We havent investigating deeper but when commenting this line everything works fine.

We have tested with Rails 2.3.2 and 2.3.3 with memcache-client-1.7.4

XOrg configuration

• https://wiki.ubuntu.com/X/Config/Resolution
• cvt 1680 1050 75
• xrandr –newmode …the output from cvt
  xrandr –newmode “1680x1050_75.00″ 187.00 1680 1800 1976 2272 1050 1053 1059 1099 -hsync +vsync
• xrandr –addmode DVI-0 1680x1050_75.00

Lenovo Y510

You have to install the latest alsa.

Then replace the existing kernel modules with the just build one. Then run depmod -a as point kilbasar here

http://ubuntuforums.org/showthread.php?t=687663&page=2

sudo su
cd /lib/modules/2.6.22-14-generic/ubuntu/media/snd-hda-intel/
mv snd-hda-intel.ko snd-hda-intel.ko.bak
ln -s /lib/modules/2.6.22-14-generic/kernel/sound/pci/hda/snd-hda-intel.ko /lib/modules/2.6.22-14-generic/ubuntu/media/snd-hda-intel/snd-hda-intel.ko
cd /usr/src/alsa/alsa-driver-1.0.16rc2/modules
cp * /lib/modules/2.6.22-14-generic/kernel/sound/
depmod -a

Logitech Revolution MX

http://x4.6times7.org/dokuwiki/doku.php/devlog/blog/howto_logitech_mx_revolution_on_ubuntu

• The mouse wheel control
  • Download from here http://goron.de/~froese/revoco/ or revoco-0.5.tar
  • make
  • sudo ./revoco manual=6
  • lets try to add it in ~/.xprofile next time
    

• Here is my xorg.conf

Section "Monitor"
 Identifier "External DVI"
 # 1680x1050 74.89 Hz (CVT 1.76MA) hsync: 82.31 kHz; pclk: 187.00 MHz
 Modeline "1680x1050_75.00"  187.00  1680 1800 1976 2272  1050 1053 1059 1099 -hsync +vsync
 # 1680x1050 59.95 Hz (CVT 1.76MA) hsync: 65.29 kHz; pclk: 146.25 MHz
 Modeline "1680x1050_60.00"  146.25  1680 1784 1960 2240  1050 1053 1059 1089 -hsync +vsync
 # 1680x1050 69.88 Hz (CVT) hsync: 76.58 kHz; pclk: 174.00 MHz
 Modeline "1680x1050_70.00"  174.00  1680 1800 1976 2272  1050 1053 1059 1096 -hsync +vsync
 Option "PreferedMode"    "1280x1024_75.00"
EndSection

Section "Screen"
 Identifier    "Configured Screen Device"
 Device    "Configured Video Device"
 SubSection "Display"
 Depth    24
 Modes "1680x1050" "1024x768" "640x480"
 Virtual    2960 1050
 EndSubSection
EndSection

Section "Device"
 Identifier    "Configured Video Device"
 Option    "Monitor-DVI-0" "External DVI"
EndSection

My Development setup commands

I noticed simillar post here

sudo aptitude install mc vim subversion screen pidgin meld curl links2 vim-ruby vim-gnome vim-doc vim-scripts vim-ruby vim-perl \
subversion git-core bluefish kompozer\
libmysqlclient15off libmysqlclient15-dev mysql-common mysql-client \
libmysql-ruby1.8 irb ruby1.8 rdoc ri rake \
apt-utils build-essential ruby1.8-dev mysql-server memcached libxslt1-dev libpcre3-dev zlib1g-dev unzip gzip mytop openssl \
libopenssl-ruby libmagick9-dev imagemagick librmagick-ruby1.8 imagemagick librmagick-ruby-doc  libmagick9-dev ruby1.8-dev \
libdbd-sqlite3-ruby libsqlite3-ruby sqlite3 libsqlite3-dev

ln -s /usr/bin/ruby1.8 /usr/bin/ruby

mkdir ruby_install
cd ruby_install
wget http://rubyforge.org/frs/download.php/60718/rubygems-1.3.5.tgz
tar xzvf ruby*
cd rubygems-1.3.5
ruby setup.rb
cd ..
cd ..

ln -s /usr/bin/gem1.8 /usr/bin/gem

gem install rails mysql mongrel mongrel_cluster rails paperclip will_paginate andand \
json feed-normalizer hpricot mechanize ruby-debug uuid ruport ruport-util acts_as_reportable \
rufus-scheduler annotate openwferu-scheduler production_log_analyzer capistrano-ext libxml-ruby twitter capistrano wirble RedCloth
rspec-rails sqlite3-ruby \
--no-ri --no-rdoc

gem install rmagick -v 1.15.12
ruby -rrubygems -e "require 'RMagick'; puts Magick::Long_version;"

cat > /home/guda/.irbrc
require 'rubygems'
require 'wirble'
Wirble.init
Wirble.colorize
require 'logger'
if ENV.include?('RAILS_ENV') && !Object.const_defined?('RAILS_DEFAULT_LOGGER')
Object.const_set('RAILS_DEFAULT_LOGGER', Logger.new(STDOUT))
end

Gmail notification

http://www.workswithu.com/2009/10/06/gmail-notifier-applets-for-ubuntu/