18 Feb 09 How to: Install Memcached on Ubuntu for Rails
sudo aptitude install memcached
sudo aptitude install libmemcache-dev
sudo gem install RubyInline
sudo gem install memcache-client
in application.rb
Uncomment the protect_from_forgery
in environment.rb
CACHE = MemCache.new ‘localhost:11211′, :namespace => ‘your_app’
config.action_controller.session = {
:session_key => ‘_your_app_session’,
:secret => ‘yoursecrectkey’,
:cache => CACHE,
:expires=>900 }
config.action_controller.session_store = :mem_cache_store
25 Dec 08 Attach images in rails
View the railscast on using thoughtbot’s paperclip
http://railscasts.com/episodes/134-paperclip
or
attach multiple images to a model using polymorphic paperclip
http://burm.net/2008/10/17/ruby-on-rails-polymorphic-paperclip-plugin-tutorial/
Tags: Rails
15 Dec 08 Learning how to use Shoulda
View the conf video to find out what Shoulda is
http://mwrc2008.confreaks.com/12saleh.html
Shoulda Walkthrough
http://technicalpickles.com/posts/a-walk-through-of-test-driven-development-with-shoulda
Read the thoughtbot tutorials
http://thoughtbot.com/projects/shoulda/tutorial
08 Dec 08 Rails export to excel spreadsheet
sudo gem install spreadsheet
more help:
http://codeclimber.blogspot.com/2008/11/reporting-in-excel-with-rails.html
http://spreadsheet.rubyforge.org/
To send and save through browser
Taken from https://rubyforge.org/forum/forum.php?thread_id=29606&forum_id=2920
require ’stringio’
data = StringIO.new ”
book.write data
send_data data.string, :type=>”application/excel”, :disposition=>’attachment’, :filename => ‘MeaningfulName.xls’
04 Dec 08 Send email in rails
http://railscasts.com/episodes/61
04 Dec 08 Rails sending email Net::SMTPFatalError
From: http://readlist.com/lists/lists.rubyonrails.org/rails/3/15740.html
Configuring local_recipient_maps in main.cf
The local_recipient_maps parameter specifies lookup tables with all
names or addresses of local recipients. A recipient address is local
when its domain matches $mydestination, $inet_interfaces or
$proxy_interfaces. If a local username or address is not listed in
$local_recipient_maps, then the Postfix SMTP server will reject the
address with “User unknown in local recipient table”.
The default setting, shown below, assumes that you use the default
Postfix local(8) delivery agent for local delivery, where recipients
are either UNIX accounts or local aliases:
/etc/postfix/main.cf:
local_recipient_maps = proxy:unix:passwd.byname $alias_maps
To turn off unknown local recipient rejects by the SMTP server, specify:
/etc/postfix/main.cf:
local_recipient_maps =
That is, an empty value. With this setting, the Postfix SMTP server
will not reject mail with “User unknown in local recipient table”.
Tags: Rails
19 Nov 08 Installing Webmin / Virtualmin on Slicehost Ubuntu 8.04
After trying out various web control panels, I finally settled on webmin.
I was looking for an open source / free web control panel that would allow users easily set up websites via virtual hosts and ftp accounts
Here are the steps to get it up and running quickly. This has to be done on a fresh new slice and not one that is already hosting other websites.
- This assumes you have created a Ubuntu 8.04 slice
- Set it up as per instructions here:
http://articles.slicehost.com/2008/4/25/ubuntu-hardy-setup-page-1
http://articles.slicehost.com/2008/4/25/ubuntu-hardy-setup-page-2 - The fastest way to set up Virtualmin using the install script:
http://www.webmin.com/vinstall.html $ wget http://software.virtualmin.com/gpl/scripts/install.sh
$ chmod +x install.sh
$ sudo ./install.shThat’s all! You’ll be able to view your site via https://xxx.xxx.xxx.xxx:10000
- I’ve managed to set it up with rails too following the instructions here:
http://articles.slicehost.com/2008/5/6/ubuntu-hardy-apache-rails-and-thin
04 Nov 08 Install RMagick on Ubuntu Hardy Heron
sudo aptitude install imagemagick
sudo aptitude install libmagick9-dev
sudo gem install rmagick
sudo gem install mini_magick
Install RMagick on OSX
http://benr75.com/articles/2008/03/16/install-rmagick-on-mac-os-x-leopard-from-source
Tags: Rails
21 Sep 08 Rails Pagination
From :
http://github.com/mislav/will_paginate/tree/master
Installation
script/plugin install git://github.com/mislav/will_paginate.git Usage @posts = Post.paginate :page => params[:page],rder => 'created_at DESC' In the view, page links can be rendered with a single view helper: <%= will_paginate @posts %>
Technorati Tags: rails 2.0
Tags: Add new tag, Rails, rails 2.0
16 Sep 08 Updating Ruby Gems and Upgrading Rails
For the gems
gem update –system
Upgrading Rails
gem install rails –version 2.1.1
