Amitesh’s gists

Amitesh / gist:1124605

Created August 4, 2011 06:37

Regex with problem

	1) Following regex in ruby is throwing server start (compile) time error on Mac Book Pro while on Ubuntu it is working.
	# Clean all new line character
	string.gsub!(/(?<!\n)\n(?!\n)/, '')

	Error :
	undefined (?...) sequence: /(?<!\n)\n(?!\n)/ (SyntaxError)

	Solution :
	string.gsub!(/\r/,"")
	string.gsub!(/\n/," ")

Amitesh / gist:1117971

Created August 1, 2011 11:28

Upload file from ruby on rails program with paperclip gem

	# MyModel Model
	class MyModel < ActiveRecord::Base

	has_attached_file :my_image,
	:styles => { :small_thumb => "50x50",
	:medium_thumb => "100x100"
	},
	:default_url => "/images/missing/prints/:style.png"
	end

Amitesh / gist:1113683

Created July 29, 2011 12:00

Open popup window in center of screen in javascript

	var top = window.screen.height - 300;
	top = top > 0 ? top/2 : 0;

	var left = window.screen.width - 400;
	left = left > 0 ? left/2 : 0;

	var uploadWin = window.open(url,"Upload Chapter content","width=400,height=300" + ",top=" + top + ",left=" + left);
	uploadWin.moveTo(left, top);
	uploadWin.focus();

Amitesh / gist:1092715

Created July 19, 2011 15:17

Add view helper function

	# Include it in your class
	include ActionView::Helpers::TextHelper

Amitesh / gist:1080491

Created July 13, 2011 15:12

How to setup new gist repo

	Global setup:
	Set up git
	git config --global user.name "Amitesh Kumar"
	git config --global user.email [email protected]

	Next steps:
	mkdir TinyMCE-YouTube-Plugin
	cd TinyMCE-YouTube-Plugin
	git init
	touch README

Amitesh / reset_mysql_password.sh

Created July 13, 2011 06:33

Reset Mysql root password

	Reset Mysql root password
	$ sudo stop mysql
	$ sudo start mysql
	$ mysql -u root
	mysql> SET PASSWORD FOR root@'localhost' = PASSWORD('a_real_pwd');
	mysql> exit
	bye

	try : mysql -uroot -p

Amitesh / gist:1046278

Created June 25, 2011 07:59

Set the simple-navigation file path of a Rails Engine app to auto load path of Rails 3 Main App

	require "rails"
	require 'simple-navigation'

	module MyEngine
	class Engine < Rails::Engine

	#Give the absolute path of file
	#config.autoload_paths << File.expand_path("../../../config/navigations", __FILE__)
	SimpleNavigation.config_file_path = File.expand_path("../../../config/navigations", __FILE__)

Amitesh / gist:1046269

Created June 25, 2011 07:51

Set Rails Engine/Gem public assets path, to server it from Engine/Gem itself

	require "rails"

	module MyEngine
	class Engine < Rails::Engine

	# We can add all of the public assets from our engine and make them
	# available to use. This allows us to use javascripts, images, stylesheets
	# etc.
	initializer "static assets" do \|app\|
	app.middleware.insert_before(::ActionDispatch::Static, ::ActionDispatch::Static, "#{root}/public")

Amitesh / gist:1039620

Created June 22, 2011 07:05 — forked from arnabc/gitosis-repo-creation

Gitosis repo creation ( it assumes that you have a working gitosis repository in a central server and have the permission to create new repositories)

	Add repo in local gitosis-admin/gitosis.conf
	~$ mkdir your_repo_name
	~$ cd your_repo_name
	~$ git init
	~$ git remote add origin git@YOUR_SERVER_HOSTNAME:your_repo_name.git

	# do some work, git add and commit files
	~$ git add .
	~$ git commit -m 'Your Message'

Amitesh / gist:1037742

Created June 21, 2011 12:23

Resources/Likns to create Rails 3 Engine

	https://github.com/elricstorm/baby_dove
	https://github.com/drhenner/ror_ecommerce
	http://ror-e.com/info/videos/5
	http://edgeapi.rubyonrails.org/classes/Rails/Engine.html
	https://github.com/krschacht/rails_3_engine_demo/tree/master/app
	https://github.com/jrwest/authr3
	https://github.com/mankind/Rails-3-engine-stub/wiki/How-to-building-a-rails-3-engine-and--set-up-test--with-rspec
	https://github.com/technicalpickles/jeweler
	http://www.themodestrubyist.com/2010/03/05/rails-3-plugins---part-2---writing-an-engine/
	https://gist.github.com/af7e572c2dc973add221#file_3_plugin.rdoc

Amitesh Kumar Amitesh