garciadanny

Redis and Resque

What this guide will cover: the code you will need in order to include Redis and Resque in your Rails app, and the process of creating a background job with Resque.

What this guide will not cover: installing Ruby, Rails, or Redis.

Note: As of this writing I am still using Ruby 1.9.3p374, Rails 3.2.13, Redis 2.6.11, and Resque 1.24.1. I use SQLite in development and Postgres in production.

Background jobs are frustrating if you've never dealt with them before. Over the past few weeks I've had to incorporate Redis and Resque into my projects in various ways and every bit of progress I made was very painful. There are many 'gotchas' when it comes to background workers, and documentation tends to be outdated or scattered at best.

garciadanny

body {
  width: 100%;
  height: 500px;
  margin: 0;
  padding: 0;
  text-align: center;
}
body:before {
  display: inline-block;
  content: ' ';

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require 'active_support/core_ext/array'

class Garden
  attr_reader :layout, :for_student, :students

  def initialize(layout, students = Garden.default_students)
    @students = students
    @layout = parse(layout)
    @for_student = group_by_student
    define_student_lookups

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#Model 

@user.should have(1).error_on(:username) # Checks whether there is an error in username 
@user.errors[:username].should include("can't be blank")  # check for the error message 

#Rendering
response.should render_template(:index)

#Redirecting 
response.should redirect_to(movies_path)

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class Employee
  include ActiveSupport::Configurable
end

employee = Employee.new
employee.config.research_lab_entry = :not_allowed
employee.config.paid_leave = 5

class Employee
  include ActiveSupport::Configurable

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.highlight { 
  background-color: #efefef;
  padding: 7px 7px 7px 10px;
  border: 1px solid #ddd;
  -moz-box-shadow: 3px 3px rgba(0,0,0,0.1);
  -webkit-box-shadow: 3px 3px rgba(0,0,0,0.1);
  box-shadow: 3px 3px rgba(0,0,0,0.1);
  margin: 20px 0 20px 0;
  overflow: hidden;

garciadanny

.highlight         { background-color: #49483e }
.c                 { color: #75715e }                            /* Comment                     */
.err               { color: #960050; background-color: #1e0010 } /* Error                       */
.k                 { color: #66d9ef }                            /* Keyword                     */
.l                 { color: #ae81ff }                            /* Literal                     */
.n                 { color: #f8f8f2 }                            /* Name                        */
.o                 { color: #f92672 }                            /* Operator                    */
.p                 { color: #f8f8f2 }                            /* Punctuation                 */
.cm                { color: #75715e }                            /* Comment.Multiline           */
.cp                { color: #75715e }                            /* Comment.Preproc             */

garciadanny

-------- vim-commands ----------------------------------------------------------
// BASIC CONTROL
hjkl        - move
i           - insert mode
R           - replace mode
o           - insert new line below
O           - insert new line above

// LINE MOTIONS
0           - start of line

garciadanny

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

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tmux cheat sheet

(C-x means ctrl+x, M-x means alt+x)

Prefix key

The default prefix is C-b. If you (or your muscle memory) prefer C-a, you need to add this to ~/.tmux.conf:

remap prefix to Control + a