JosephPecoraro

# Ways to execute a shell script in Ruby
# Example Script - Joseph Pecoraro

cmd = "echo 'hi'" # Sample string that can be used

# 1. Kernel#` - commonly called backticks - `cmd` 
# This is like many other languages, including bash, PHP, and Perl
#   Synchronous (blocking)
#   Returns the output of the shell command
#   Docs: http://ruby-doc.org/core/classes/Kernel.html#M001111

garybernhardt

# I don't really see any services here. What I see is:
#   - Normal HTTP boundary stuff (params flash, redirect).
#   - Model creation and retrieval.
#   - Warden manipulation, which is an odd done but smells like boundary.
#
# I left all of the HTTP boundary stuff in the controller (and only the
# controller). I moved the model creation/retrieval into simple class methods
# in the models. I moved the warden manipulation stuff into
# ApplicationController (with caveats that I'll discuss inline).
#

alain75007

#!/bin/bash
### BEGIN INIT INFO
# Provides:     sidekiq beta    
# Required-Start:   $syslog $remote_fs
# Required-Stop:    $syslog $remote_fs
# Should-Start:     $local_fs
# Should-Stop:      $local_fs
# Default-Start:    2 3 4 5
# Default-Stop:     0 1 6
# Short-Description:    sidekiq beta - asynchronous rails 

jenheilemann

class ChangeProductLongDescription < ActiveRecord::Migration
  def up
    # simple and straightforward
    change_column :products, :long_description, :text
  end

  # but why cant it just be:
  #   change_column :product, :long_description, :string
  # ???
  # because effin databases don't like you, that's why.

pglombardo

Rails 4 is out featuring Russian Doll caching (AKA Cache Digests). In this article, I apply Russian Doll caching to one of my poorer performing Rails 3 pages using the cache_digests gem.

ActionView templates are great. They are easy to code, manage and extend but the one thing they are not is fast...at least not out of the box.

In this article, I'll be using AppNeta's TraceView to time ActionView performance. If you haven't used TraceView before, checkout my previous article Instrumenting Ruby on Rails with TraceView.

ActionView is Slow; Pitfalls Ahead

ActionView puts forth a great development pattern of views and partials that is easy to understand, implement and maintain but that comes at a cost: The rendering process is complex and slow.

Kartones

PSQL

Magic words:

psql -U postgres

Some interesting flags (to see all, use -h or --help depending on your psql version):

• -E: will describe the underlaying queries of the \ commands (cool for learning!)
• -l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)

tompave

class ApplicationController < ActionController::Base

private
  
  # Runs a rake task asyncronously in a child process
  #
  # for example, in any controller:
  #   async_rake("async:import_fixtures")
  #   async_rake("db:maintenance:cleanup", table: "things", ids: [12, 114, 539])
  #

Joseph-N

// turbolinks addthis
var initAdthis;

initAdthis = function(){
    // Remove all global properties set by addthis, otherwise it won't reinitialize
    for (var i in window) {
        if (/^addthis/.test(i) || /^_at/.test(i)) {
            delete window[i];
        }
    }

alirobe

### 
###
### UPDATE: For Win 11, I recommend using this tool in place of this script: 
### https://christitus.com/windows-tool/
### https://github.com/ChrisTitusTech/winutil
### https://www.youtube.com/watch?v=6UQZ5oQg8XA
### iwr -useb https://christitus.com/win | iex
###
###

keeferrourke

#!/bin/sh

# Written by: Keefer Rourke <https://krourke.org>
# Based on AUR package <https://aur.archlinux.org/cgit/aur.git/tree/PKGBUILD?h=ttf-google-fonts-git>

# dependancies: fonts-cantarell, ttf-ubuntu-font-family, git
sudo apt-get install fonts-cantarell ttf-ubuntu-font-family git
srcdir="/tmp/google-fonts"
pkgdir="/usr/share/fonts/truetype/google-fonts"
giturl="git://github.com/google/fonts.git"