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View caller.ru
# simple ruby code example for running python script
path_to_script = File.dirname(__FILE__)
puts "It's a ruby script"
puts "Run python script with backticks"
puts "Result is available in caller.ru"
puts `python #{path_to_script}/processing.py UserName 37`
View Rakefile
require 'my-sinatra-app'
require 'sinatra/activerecord/rake'
desc "run irb console"
task :console, :environment do |t, args|
ENV['RACK_ENV'] = args[:environment] || 'development'
exec "irb -r irb/completion -r my-sinatra-app"
end
View gist:7462754

Implement Routing for Subdomains

Rails 3.0 introduced support for routing constrained by subdomains.

A subdomain can be specified explicitly, like this:

match '/' => 'home#index', :constraints => { :subdomain => 'www' } 
View gist:6278572
module ActsAsTaggable
module Taggable
def self.included(base)
base.field :tags, :type => Array, :default => []
end
end
module Tagger
def tag(object, tags)
View custom_logger.rb
# lib/custom_logger.rb
class CustomLogger < Logger
def format_message(severity, timestamp, progname, msg)
"#{timestamp.to_formatted_s(:db)} #{severity} #{msg}\n"
end
end
logfile = File.open("#{Rails.root}/log/custom.log", 'a') # create log file
logfile.sync = true # automatically flushes data to file
CUSTOM_LOGGER = CustomLogger.new(logfile) # constant accessible anywhere
View 0. nginx_setup.sh
# Nginx+Unicorn best-practices congifuration guide. Now with SPDY!
# We use latest stable nginx with fresh **openssl**, **zlib** and **pcre** dependencies.
# Some extra handy modules to use: --with-http_stub_status_module --with-http_gzip_static_module
#
# Deployment structure
#
# SERVER:
# /etc/init.d/nginx (1. nginx)
# /home/app/public_html/app_production/current (Capistrano directory)
#
View deploy.rb
after "deploy:symlink", "deploy:restart_workers"
after "deploy:restart_workers", "deploy:restart_scheduler"
##
# Rake helper task.
# http://pastie.org/255489
# http://geminstallthat.wordpress.com/2008/01/27/rake-tasks-through-capistrano/
# http://ananelson.com/said/on/2007/12/30/remote-rake-tasks-with-capistrano/
def run_remote_rake(rake_cmd)
rake_args = ENV['RAKE_ARGS'].to_s.split(',')
View redis_pubsub_demo.rb
# Author: Pieter Noordhuis
# Description: Simple demo to showcase Redis PubSub with EventMachine
#
# Requirements:
# - rubygems: eventmachine, thin, cramp, sinatra, yajl-ruby
# - a browser with WebSocket support
#
# Usage:
# ruby redis_pubsub_demo.rb
#
View Changes in Rails 4_1.md

Routes

小心地使用 Match(Rails 3 已实现)

Rails 3 提供了 match 方法供我们自定义 routes,然而我们要小心使用它以避免“跨站脚本攻击”(XSS Attack)。比如像这样的 routes:

注:(r3 代表 Rails 3,r4 代表 Rails 4)

# routes.rb
@jhjguxin
jhjguxin / how_to_concerns.md
Last active Nov 28, 2018 — forked from dhh/gist:1014971
how to concerns with rails 3
View how_to_concerns.md