almokhtarbr

This is the companion to my YouTube video: https://youtu.be/MJSZ3WcgHeE

Debugging Rails in Development

1. Basic

https://guides.rubyonrails.org/debugging_rails_applications.html

• Putting debug info into views using debug helper (or to_yaml or inspect)

almokhtarbr

Unknown username "whoopsie" in message bus configuration file (Crouton)
For some time I had this notification "Unknown username 'whoopsie' in message bus configuration file" coming up when I started my Ubuntu-server on my Chromebook via crouton. It seemed not to do anything wrong but hey, I hate to see error messages popping up on the screen and not knowing what it really means.

In my search I've learned that the user 'whoopsie'  is being used for the error reporting daemon in Ubuntu.

System Description:
Toshiba Chromebook 2:
Intel® Celeron® Processor N2840
Intel® HD Graphics
4GB DDR3 1600MHz 

almokhtarbr

Magical Authentication with Sorcery

    Gems
    Ruby on Rails

March 16, 2015
Share

Magician Hat

almokhtarbr

class Game
  attr_gtk

  def tick
    defaults
    input
    calc
    render
  end

almokhtarbr

1. Change your database RDS instance security group to allow your machine to access it.
   • Add your ip to the security group to acces the instance via Postgres.
2. Make a copy of the database using pg_dump
   • $ pg_dump -h <public dns> -U <my username> -f <name of dump file .sql> <name of my database>
   • you will be asked for postgressql password.
   • a dump file(.sql) will be created
3. Restore that dump file to your local database.
   • but you might need to drop the database and create it first
   • $ psql -U <postgresql username> -d <database name> -f <dump file that you want to restore>

• the database is restored

almokhtarbr

add this to docker-composefile after build line

stdin_open: true
tty: true

to be like this

services:
  app:
 build:

almokhtarbr

# create a migration to enable uuid# This will generate a new migration file with 
# timestamp_enable_uuid_extension.rbrails g migration EnableUuidExtension# In migration file add following line to enable pgcryptoclass EnableUuidExtension < ActiveRecord::Migration[6.0]
  def change
    enable_extension 'pgcrypto'
  end
end 


# Create migration for tasks tablerails g migration CreateTasksclass CreateTasks < ActiveRecord::Migration[6.0]
  def change

almokhtarbr

Add ComparisonValidator

Before Rails 7

class Event < ApplicationRecord
  validates :start_date, presence: true
  validates :end_date, presence: true

  validate :end_date_is_after_start_date

almokhtarbr

brew install postgresql 
# Add te path 
export PATH=$PATH:/usr/local/opt/postgresql@13/bin
create database almokhtar;
brew install postgis


initdb /usr/local/var/postgresql\@13/
rm -r /usr/local/var/postgresql\@13/
createdb postgis_test

almokhtarbr

Stash current changes

git > Stash > Stash (Include Untracked)
Create stash as patch

git stash show "stash@{0}" -p > changes.patch
Apply patch

git apply changes.patch