ProGM

Arel Cheatsheet on Steroids

A (more) complete cheatsheet for Arel, including NamedFunction functions, raw SQL and window functions.

Tables

posts = Arel::Table.new(:posts)
posts = Post.arel_table # ActiveRecord

Table alias

maxdbn

# Sidekiq interaction and startup script
commands:
  create_post_dir:
    command: "mkdir -p /opt/elasticbeanstalk/hooks/appdeploy/post"
    ignoreErrors: true
files:
  "/opt/elasticbeanstalk/hooks/appdeploy/post/50_restart_sidekiq.sh":
    mode: "000755"
    owner: root
    group: root

webdev1001

Array values in the parameter to `Gem.paths=` are deprecated.
Please use a String or nil.
An Array (...) was passed in from bin/rails:3:in `load'

Solution
========
https://github.com/rubygems/rubygems/issues/1551

If you came to this issue by googling the error specified in the description of this issue, you should know that it has already been fixed in spring-1.6.4 and all you need to do is to update to latest spring and regenerate binstubs, like this:

zulhfreelancer

It's important to note that running this reset will drop any existing data you have in the application

How to reset PG Database on Heroku?

• Step 1: heroku restart
• Step 2: heroku pg:reset DATABASE (no need to change the DATABASE)
• Step 3: heroku run rake db:migrate
• Step 4: heroku run rake db:seed (if you have seed)

One liner

charliewynn

;you have to re-map the f keys so they work.
;Otherwise AHK will just 'wait' for the number key after - if there is non then nothing happens
f1::f1
f2::f2
f3::f3
f4::f4
f5::f5
f6::f6
f7::f7
f8::f8

thebucknerlife

#Simple Authentication with Bcrypt

This tutorial is for adding authentication to a vanilla Ruby on Rails app using Bcrypt and has_secure_password.

The steps below are based on Ryan Bates's approach from Railscast #250 Authentication from Scratch (revised).

You can see the final source code here: repo. I began with a stock rails app using rails new gif_vault

##Steps

seanlinsley

# Define a setter to pass in a custom log formatter
class ActiveSupport::BufferedLogger
  def formatter=(formatter)
    @log.formatter = formatter
  end
end

# Defines a custom log format (time, severity, message, PID, backtrace)... all with color!
class Formatter
  SEVERITY_TO_TAG   = {'DEBUG'=>'meh', 'INFO'=>'fyi', 'WARN'=>'hmm', 'ERROR'=>'wtf', 'FATAL'=>'omg', 'UNKNOWN'=>'???'}

mikesmullin

sudo apt-get install unzip;
wget -O /tmp/chromedriver.zip http://chromedriver.googlecode.com/files/chromedriver_linux64_19.0.1068.0.zip && sudo unzip /tmp/chromedriver.zip chromedriver -d /usr/local/bin/;