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Common Misunderstandings

Serialization should be testable

Agreed and with RABL serialization is testable both in and outside of a web request context. Check out the other gists in this file for examples using Rabl.render to do standalone unit testing.

RABL can't be used for generating push notifications or in background jobs

Not at all true, I use RABL for these purposes in all of my applications. Simply use Rabl.render to render templates in any context.

nhance

Model.new.foo

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Minitest Steps

Add to gemspec:

# my_gem.gemspec

Gem::Specification.new do |s|
  # ...
 

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/* How to calculate postgreSQL database size in disk ? */

SELECT pg_size_pretty(pg_database_size('thedbname'));

/* Calculate size of a table including or excluding the index */

SELECT pg_size_pretty(pg_total_relation_size('big_table'));
SELECT pg_size_pretty(pg_relation_size('big_table')); /* without index */

/* See indexes on a table with `\d tablename` */

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Rails.logger.info "REQUEST INSPECTOR"
Rails.logger.info "  [REQUEST_URI] #{request.headers['REQUEST_URI'].inspect}"
Rails.logger.info "  [RAW_POST]: #{request.raw_post.inspect}"
Rails.logger.info "  [PARAMS]: #{request.params.inspect}"
Rails.logger.info "  [HTTP_AUTHORIZATION] #{request.headers['HTTP_AUTHORIZATION'].inspect}"
Rails.logger.info "  [CONTENT_TYPE]: #{request.headers['CONTENT_TYPE'].inspect}"
Rails.logger.info "  [HTTP_ACCEPT] #{request.headers['HTTP_ACCEPT'].inspect}"
Rails.logger.info "  [HTTP_HOST] #{request.headers['HTTP_HOST'].inspect}"
Rails.logger.info "  [HTTP_USER_AGENT] #{request.headers['HTTP_USER_AGENT'].inspect}"

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$ sudo apt-get install gcc g++ build-essential libssl-dev libreadline5-dev zlib1g-dev linux-headers-generic
$ sudo apt-get install libc6-dev libssl-dev libmysql++-dev libsqlite3-dev make
$ wget ftp://ftp.ruby-lang.org//pub/ruby/1.9/ruby-1.9.2-p0.tar.gz
$ tar -xvzf ruby-1.9.2-p0.tar.gz
$ cd ruby-1.9.2-p0/
$ ./configure --prefix=/usr/local/ruby
$ make && sudo make install
$ sudo nano /etc/environment
  
    PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/ruby/bin"

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# Credit to Mike Perham for this gem of an idea
# http://www.mikeperham.com/2007/12/17/creating-a-counter_cache-column/
class RailsMigration < ActiveRecord::Migration
  def self.up
    add_column :media, :followers_count, :integer, :default => 0, :null => false

    # Populate the media follower counter cache in one fell swoop.
    sql = "update media, (select operable_id, count(*) as the_count from follow_operations "\
      "group by operable_id) as follows set media.followers_count = follows.the_count "\
      "where media.id = follows.operable_id;"

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# http://www.rubyenterpriseedition.com/documentation.html#_garbage_collector_performance_tuning
# http://snaprails.tumblr.com/post/241746095/rubys-gc-configuration
# http://smartic.us/2010/10/27/tune-your-ruby-enterprise-edition-garbage-collection-settings-to-run-tests-faster/
# http://izumi.plan99.net/blog/wp-content/uploads/2009/01/ree-documentation.html#_garbage_collector_performance_tuning

$ sudo nano /usr/local/bin/tuned_ruby

  # !/bin/bash 
  export RUBY_HEAP_MIN_SLOTS=500000
  export RUBY_HEAP_SLOTS_INCREMENT=250000

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// public/javascripts/application.js
// JQUERY example

// Accepts ev.foo, ev.bar, ev.html
$(document).bind('some:event', function(ev) {
  // do something here
  $('some-div').html(ev.html);
});

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# you can make as many tabs as you wish...
# tab names are actually arbitrary at this point too.
---
- tab1: cd ~/foo/bar
- tab2: 
  - mysql -u root
  - use test;
  - show tables;
- tab3: echo "hello world"
- tab4: cd ~/baz/ && svn up