International

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

International

Rails 5.2 with webpacker, bootstrap, stimulus starter

This gist will collect all issues we solved with Rails 5.2 and Webpacker

Create Project

# Last few parameters(--skip-* part) is only my habbit not actully required
$ rails new <project_name> --webpack=stimulus --database=postgresql --skip-coffee --skip-test

International

This list is based on aliases_spec.rb.

You can see also Module: RSpec::Matchers API.

matcher	aliased to	description
a_truthy_value	be_truthy	a truthy value
a_falsey_value	be_falsey	a falsey value
be_falsy	be_falsey	be falsy
a_falsy_value	be_falsey	a falsy value

International

wget https://storage.googleapis.com/golang/go1.10.1.linux-armv6l.tar.gz
sudo tar -C /usr/local -xvf go1.10.1.linux-armv6l.tar.gz
cat >> ~/.bashrc << 'EOF'
export GOPATH=$HOME/go
export PATH=/usr/local/go/bin:$PATH:$GOPATH/bin
EOF
source ~/.bashrc

International

require 'aws/s3' # gem name is 'aws-sdk'

class BucketSyncService
  attr_reader :from_bucket, :to_bucket, :logger
  attr_accessor :debug

  DEFAULT_ACL = :public_read

  # from_credentials and to_credentials are both hashes with these keys:
  #  * :aws_access_key_id

International

defmodule MyApp.Auth do
  import Comeonin.Bcrypt, only: [checkpw: 2, dummy_checkpw: 0]

  alias MyApp.Accounts.User
  alias MyApp.Repo

  def login(conn, user) do
    conn
    |> Guardian.Plug.sign_in(user)
  end

International

rabbitmqctl add_user test test
rabbitmqctl set_user_tags test administrator
rabbitmqctl set_permissions -p / test ".*" ".*" ".*"

International

1. Change rails version in Gemfile
> gem 'rails', '~> 5.1', '>= 5.1.4'

2. Remove Gemfile.lock
> git rm Gemfile.lock

3. Run bundle install command
> bundle install --jobs=5

4. Run rails' app update to apply changes to app

International

require 'cucumber'
require 'selenium-webdriver'
# require 'cukehub' # optional, but recommended. See cukehub.com for more details

caps = Selenium::WebDriver::Remote::Capabilities.chrome(chromeOptions: { binary: "/Applications/Google\ Chrome\ Canary.app/Contents/MacOS/Google\ Chrome\ Canary", 
                                                                         args: [ "--headless" ]})

Before do
  @browser = Selenium::WebDriver.for :chrome, desired_capabilities: caps
end

International

require 'cucumber'
require 'selenium-webdriver'
# require 'cukehub' # optional, but recommended. See cukehub.com for more details

caps = Selenium::WebDriver::Remote::Capabilities.chrome(chromeOptions: { binary: "/Applications/Google\ Chrome\ Canary.app/Contents/MacOS/Google\ Chrome\ Canary", 
                                                                         args: [ "--headless" ]})

Before do
  @browser = Selenium::WebDriver.for :chrome, desired_capabilities: caps
end