ssoroka

40+ newbie rails mistakes

themes:
Build for failure
  expect services to be slow
  expect services to be unavailable
Build so components can be easily replaced
Build so code can be easily reused
  
mistakes:

ssoroka

function do_nothing() { 
  return false;
}

// prevent a second click for 10 seconds. :)
$('.prevent_doubleclick').live('click', function(e) { 
  $(e.target).click(do_nothing); 
  setTimeout(function(){
    $(e.target).unbind('click', do_nothing);
  }, 10000); 

ssoroka

dictionary = File.read('/usr/share/dict/words').split("\n")

dictionary = dictionary.select { |word|
  word.length > 3 && word.length < 7
}

word_picked = dictionary[rand(dictionary.size)]

system %(say "#{word_picked}")

ssoroka

# Use "bundle install --path vendor/bundler"
source :rubygems

gem 'mysql'
gem 'rails', '~> 3.0' # rails 3!
gem 'hoptoad_notifier'
gem 'app_settings', :git => 'git://github.com/ssoroka/app_settings.git'
gem 'ignore_nil' # eg: ignore_nil { user.account.config.name.strip }
gem 'less'

ssoroka

$:<< '../lib' << 'lib'

require 'rubygems'
require 'eventmachine'
require 'em-synchrony'

EM.run {
  EM.synchrony {
    loop do
      begin

ssoroka

Rubinius Crash Report #rbxcrashreport

Error: signal SIGSEGV

[[Backtrace]]
0   rbx                                 0x00000001000212e0 _ZN8rubiniusL12segv_handlerEi + 160
1   libSystem.B.dylib                   0x00007fff8044866a _sigtramp + 26
2   ???                                 0x00007fff5fbf3490 0x0 + 140734799754384
3   rbx                                 0x00000001001c8d93 _ZN8rubinius12ObjectWalker4nextEv + 51
4   rbx                                 0x00000001001276f6 _ZN8rubinius6System14vm_find_objectEPNS_2VMEPNS_5ArrayEPNS_6ObjectEPNS_9CallFrameE + 422

ssoroka

# Use feature, background, and scenario blocks to write acceptance tests in test/unit
# which are really just integration tests. include capybara or webrat or something and voila.

# test/acceptance_helper.rb
require 'test_helper'

module ActionDispatch
  class AcceptanceTest < ActionDispatch::IntegrationTest
    class << self
      alias :background :setup

ssoroka

module ActiveRecord
  class SQLCounter
    IGNORED_SQL = [/^PRAGMA (?!(table_info))/, /^SELECT currval/, /^SELECT CAST/, /^SELECT @@IDENTITY/, /^SELECT @@ROWCOUNT/, /^SAVEPOINT/, /^ROLLBACK TO SAVEPOINT/, /^RELEASE SAVEPOINT/, /^SHOW max_identifier_length/]

    # FIXME: this needs to be refactored so specific database can add their own
    # ignored SQL.  This ignored SQL is for Oracle.
    IGNORED_SQL.concat [/^select .*nextval/i, /^SAVEPOINT/, /^ROLLBACK TO/, /^\s*select .* from all_triggers/im]

    def initialize
      $queries_executed = []

ssoroka

#!/usr/bin/env ruby

# ONE-LINE INSTALL INSTRUCTIONS:
# wget --no-check-certificate https://raw.github.com/gist/1065081/git-compare; chmod u+x git-compare; mv git-compare `which git-status | ruby -e "puts STDIN.read.split(/\//)[0..-2].join('/')"`/

$remote = 'origin'

def usage
  puts %(
opens commits in github's compare feature. Commits must be pushed (remote "origin" is default)

ssoroka

require 'objectdb'

db = ObjectDB.new
user = {:name => 'steve', :domain => 'go_fish.com', :customer_since => Time.now.to_s}

db.set('[email protected]', user)

db.get('[email protected]')

 => {"name"=>"steve", "domain"=>"go_fish.com", "customer_since"=>"Sun Jul 31 02:19:51 -0500 2011"}