staltz

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

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This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

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mrispoli24

Setting up Heroku and Cloudflare (the right way)

The following outlines how to setup Heroku + Cloudflare with a full SSL certificate. What this means is that communication between the browser and the Cloudflare CDN is encrypted as well as communication between Cloudflare and Heroku’s origin server. Follow these steps exactly and the setup is a breeze.

Step 1: Set up domain names in Heroku

First you want to add the root domain and the www domain to heroku. You do this by clicking into your production application, then going to settings and then scrolling down to Domains and certificates.

Here you will add <your_domain>.com and www.<your_domain>.com. This will give you two CNAME records. They will look something like <your_domain>.com.herokudns.com and www.<your_domain>.com.herokudns.com.

Step 2: Add CNAME records to Cloudfare.

fractaledmind

users_file = Rails.root.join('storage', 'users.yml.erb')
if File.exist? users_file
  users = YAML.load(ERB.new(File.read(users_file)).result)

  User.insert_all(
    users.map { |user| user.except("password") },
    unique_by: :username
  )
end

fractaledmind

ass ApplicationController < ActionController::Base
  before_action :authenticate!

  helper_method :current_user
  helper_method :user_signed_in?

  private

    def authenticate
      @current_user = nil

Envek

# spec/system/support/login_helpers.rb
# See this blog post for setup guide: https://evilmartians.com/chronicles/system-of-a-test-setting-up-end-to-end-rails-testing

module LoginHelpers
  def login_as(user)
    # Craft session cookie to make request authenticated (to pass even routing constraints)
    # Compilation of these:
    #  - https://dev.to/nejremeslnici/migrating-selenium-system-tests-to-cuprite-42ah#faster-signin-in-tests
    #  - https://turriate.com/articles/2011/feb/how-to-generate-signed-rails-session-cookie
    #  - https://github.com/rails/rails/blob/43e29f0f5d54294ed61c31ddecdf76c2e1a474f7/actionpack/test/dispatch/cookies_test.rb#L350

jesster2k10

JWT Auth + Refresh Tokens in Rails

This is just some code I recently used in my development application in order to add token-based authentication for my api-only rails app. The api-client was to be consumed by a mobile application, so I needed an authentication solution that would keep the user logged in indefinetly and the only way to do this was either using refresh tokens or sliding sessions.

I also needed a way to both blacklist and whitelist tokens based on a unique identifier (jti)

Before trying it out DIY, I considered using:

owaiswiz

# Unnecessary indexes slows down writes and consumes additional storage and memory.

# Just paste this snippet in your Rails console (bundle exec rails c).
# And it will print all redundant indexes that are already covered by another index on the table:
#   Table `pages`:  index `site_idx` (site_id) already covered by `site_slug_idx`   (site_id,slug)
#   Table `optins`: index `list_idx` (list_id) already covered by `list_active_idx` (list_id,active)


ActiveRecord::Base.connection.tables.map do |table|
  indexes = ActiveRecord::Base.connection.indexes(table).select(&:valid).reject(&:where) 

wbotelhos

require 'sidekiq/api'

# 1. Clear retry set

Sidekiq::RetrySet.new.clear

# 2. Clear scheduled jobs 

Sidekiq::ScheduledSet.new.clear

dhh

ruby '2.7.1'

gem 'rails', github: 'rails/rails'
gem 'tzinfo-data', '>= 1.2016.7'  # Don't rely on OSX/Linux timezone data

# Action Text
gem 'actiontext', github: 'basecamp/actiontext', ref: 'okra'
gem 'okra', github: 'basecamp/okra'

# Drivers

rafaelfranca

require 'active_support'

class Foo
  def foo
    "foo"
  end

  def bar
    ActiveSupport::Deprecation.warn("bar is deprecated")