rocLv

module RequestHelper
  def json_response
    JSON.parse(response.body, symbolize_names: true)
  end
end

class ActionDispatch::IntegrationTest
  include RequestHelper
end

rocLv

#config/initializers/redis.rb
require 'redis'
require 'redis/objects'

REDIS_CONFIG = YAML.load( File.open( Rails.root.join("config/redis.yml") ) ).symbolize_keys
dflt = REDIS_CONFIG[:default].symbolize_keys
cnfg = dflt.merge(REDIS_CONFIG[Rails.env.to_sym].symbolize_keys) if REDIS_CONFIG[Rails.env.to_sym]

$redis = Redis.new(cnfg)
Redis::Objects.redis = $redis

rocLv

require 'curb'
require "json"
require "base64"
require "net/http"
require "uri"

CUID = "8132533";
CLIENT_ID = "your_client_id";
CLIENT_SECRET = "your_client_secret";

rocLv

  def self.dedupe
    # find all models and group them on keys which should be common
    grouped = all.group_by{|model| [model.title,model.info,model.address,model.phone] }
    grouped.values.each do |duplicates|
      # the first one we want to keep right?
      first_one = duplicates.shift # or pop for last one
      # if there are any more left, they are duplicates
      # so delete all of them
      duplicates.each{|double| double.destroy} # duplicates can now be destroyed
    end

rocLv

# lib/custom_logger.rb
class CustomLogger < Logger
  def format_message(severity, timestamp, progname, msg)
    "#{timestamp.to_formatted_s(:db)} #{severity} #{msg}\n"
  end
end

logfile = File.open("#{Rails.root}/log/custom.log", 'a')  # create log file
logfile.sync = true  # automatically flushes data to file
CUSTOM_LOGGER = CustomLogger.new(logfile)  # constant accessible anywhere

rocLv

// Use Gists to store code you would like to remember later on
console.log(window); // log the "window" object to the console

rocLv

Rails 4 - Respond only to JSON and not HTML

I believe there are 2 parts here:
1) json only requests in rails
2) json only responses in rails

1) Configure your application controller to ensure json requests only

# app/controller/application_controller.rb  
before_action :ensure_json_request  

rocLv

require_relative 'boot'
require 'csv'
require 'rails/all'

# Require the gems listed in Gemfile, including any gems
# you've limited to :test, :development, or :production.
Bundler.require(*Rails.groups)

module Giant
  class Application < Rails::Application

rocLv

Create the file /etc/apt/sources.list.d/pgdg.list, and add a line for the repository
deb http://apt.postgresql.org/pub/repos/apt/ xenial-pgdg main

wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | \
  sudo apt-key add -
sudo apt-get update

sudo apt-get install postgresql-9.6 postgresql-server-dev-9.6 postgresql-contrib-9.6 -y
 
sudo su - postgres -c "psql template1 -p 5433 -c 'CREATE EXTENSION IF NOT EXISTS hstore;'"

rocLv

You can specify an explicit logger in your config;

my_logger = ActiveSupport::BufferedLogger.new(path)
config.logger = my_logger
This will replace Rails.logger