randika

<%= link_to "Sign up",{:controller=>"users",:action=>"new"} ,:class=>"some-class-name" %>

randika

<script type="text/javascript">
//Javascript trim() example
String.prototype.trim = function() { return this.replace(/^\s+|\s+$/g, ""); };

//Usage:
var str = " foo bar ";
alert("Original string: '" + str + "'");
str = str.trim();
alert("Trimmed string: '" + str + "'");
</script>

randika

#Ruby on Rails: How to bypass Model validation
#User Model
class User < ActiveRecord::Base
  validates_presence_of :first_name, :last_name
end

#BusinessAccount Model
class BusinessAccount < ActiveRecord::Base
  validates_uniqueness_of :username 
  validates_presence_of :username, :category, :name

randika

# Search all history
randika@randika-XPS-M1330:~$ history
    1  sudo apt-get install aptitude
    2  sudo aptitude update
    3  sudo aptitude install build-essential curl git-core
........
........
   29  chmod 400 xxxxx.pem 
   30  ssh -i xxxxx.pem root@ec2-xxx-xxx-xxx-xxx.compute-1.amazonaws.com

randika

$ lsof -i -P | grep 3000
ruby      11374 randika    5u  IPv4  26389      0t0  TCP *:3000 (LISTEN)

# Terminate the process if you want
$ kill -9 11374

randika

$ sudo apt-get install aptitude

Make sure to update once finished.

$ sudo aptitude update

OK now we have aptitude installed on our system and let’s install rvm. There is a shell script already on rvm server for this. To run this script we need git and curl installed on our system.

$ sudo aptitude install build-essential curl git-core

randika

activesupport (3.1.1) lib/active_support/whiny_nil.rb:48:in `method_missing'
storage_room (0.3.13) lib/storage_room/embeddeds/file.rb:24:in `set_with_filename'
storage_room (0.3.13) lib/storage_room/embeddeds/file.rb:15:in `block in new_with_filename'
storage_room (0.3.13) lib/storage_room/embeddeds/file.rb:15:in `tap'
storage_room (0.3.13) lib/storage_room/embeddeds/file.rb:15:in `new_with_filename'
app/controllers/entry_controller.rb:11:in `create'
actionpack (3.1.1) lib/action_controller/metal/implicit_render.rb:4:in `send_action'
actionpack (3.1.1) lib/abstract_controller/base.rb:167:in `process_action'
actionpack (3.1.1) lib/action_controller/metal/rendering.rb:10:in `process_action'
actionpack (3.1.1) lib/abstract_controller/callbacks.rb:18:in `block in process_action'

randika

# Create database, user and grant permissions 
grant all on <DATABASE>.* to '<USER>'@'%' identified by '<PASSWORD>';

randika

###How to deploy rails 3.1 app on heroku Cedar stack

Gem configuration
==============================
1)  On your Gem file move the default sqlite3 gem config to development group and add PosgreSQL

group :production do
  # gems specifically for Heroku go here
  gem "pg"
end

randika

Apache Server Permission set-up
================================
sudo chown -R www-data:www-data /home/ubuntu/websites
sudo chmod -R 755 /home/ubuntu/websites