wilsonsilva

# Download the alpine image, which is more than 50% smaller than the base image
docker pull postgres:12.3-alpine

# macros is a the name of your app. My app is called "macros".
# One volume per app ensures that we can isolate and back it up independently
docker volume create macros

docker run --name postgres \
  -e POSTGRES_PASSWORD=postgres -d -p 5432:5432 \
  -v macros:/var/lib/postgresql/data postgres:12.3-alpine

wilsonsilva

# Definition

module Project
  class Configuration
    attr_accessor :name, :author
  end
end

module Project
  extend self

wilsonsilva

describe '#educate' do
  it 'increments the education level by 1' do
    expect { person.educate }.to change { person.education_level }.from(1).to(2)
  end
end

wilsonsilva

# https://stackoverflow.com/a/44672195/3013522
git reset --soft HEAD~1

wilsonsilva

def self.❨╯°□°❩╯︵┻━┻
  puts 'Calm down, yo.'
end

wilsonsilva

#!/bin/bash

git branch --merged master | grep -v 'master$' | xargs git branch -d

wilsonsilva

#!/bin/sh

export BRANCH=$(git branch | sed -n -e 's/^\* \(.*\)/\1/p')
echo "Deploying $BRANCH to staging"
cap staging deploy

wilsonsilva

describe User do
  subject { create(:user, name: 'Wilson Silva', activated: true) }

  it { is_expected.to be_activated }
  its(:name) { is_expected.to eq('Wilson Silva')  }
end

wilsonsilva

sudo tail -f /proc/<pid>/fd/1

example: sudo tail -f /proc/2394/fd/1

wilsonsilva

bundle exec rails g migration AddUserRefToProducts user:references

# Generates

class AddUserRefToProducts < ActiveRecord::Migration
  def change
    add_reference :products, :user, index: true
  end
end