wicky-andrian

a = ["B$u$i$ld", "$t$$h$e", "N$e$x$t", "E$$ra", "$$o$f$", "S$$of$t$wa$r$e", "De$$ve$l$op$me$n$t"] 


for i in a
i.to_s
i.gsub!('$', '')
puts "#{i.upcase}"
end

wicky-andrian

Rails Active Storage Cheatsheet

• Rails Active Storage Cheatsheet
  • Install Active Storage
  • Usage
    • Model
    • Controller
    • Views (in ERB)
    • Display Image and its variants or Preview (PDF or Video)
• Install this libraries first

wicky-andrian

If your master.key has been compromised, you might want to regenerate it.

No key regeneration feature at the moment. We have to do it manually.

1. Copy content of original credentials rails credentials:show somewhere temporarily.
2. Remove config/master.key and config/credentials.yml.enc
3. Run EDITOR=vim rails credentials:edit in the terminal: This command will create a new master.key and credentials.yml.enc if they do not exist.
4. Paste the original credentials you copied (step 1) in the new credentials file (and save + quit vim)
5. Add and Commit the file config/credentials.yml.enc

wicky-andrian

I got solution from ask ubuntu and youtube chanel here the solution, its about python program:
# open terminal and run
$ sudo gedit /usr/lib/python3/dist-packages/kazam/pulseaudio/pulseaudio.py
# change all with this python code copy all after dash
-------------------------------------------------------------------------
# -*- coding: utf-8 -*-
#
#       pulseaudio.py
#
#       Copyright 2012 David Klasinc <bigwhale@lubica.net>

wicky-andrian

namespace :db do  desc "Backup project database. Options: DIR=backups RAILS_ENV=production MAX=7" 
  task :backup => [:environment] do
    datestamp = Time.now.strftime("%Y-%m-%d_%H-%M-%S")    
    base_path = Rails.root
    base_path = File.join(base_path, ENV["DIR"] || "backups")
    backup_base = File.join(base_path, 'db_backups')
    backup_folder = File.join(backup_base, datestamp)
    backup_file = File.join(backup_folder, "#{RAILS_ENV}_dump.sql")    
    FileUtils.mkdir_p(backup_folder)    
    db_config = ActiveRecord::Base.configurations[RAILS_ENV]    

wicky-andrian

Forms, form_for, and link_to

---

Lesson Objectives

1. Understand forms and the ways we write them
2. Understand the difference between form_tag and form_for
3. Understand link_to and how we can use it to dynamically link our application together

wicky-andrian

a = "halooooooooooo"
puts "a = halooooooooooo"
puts "Objek id dari a: #{a.object_id}"

b = a.upcase

puts "b = a.upcase"
puts b
puts "Objek id dari b: #{b.object_id}"

wicky-andrian

a = "234"
puts "a = 234"
puts "Contoh pakai to_i: #{a.to_i}"

b = "1234.5667"
puts "b = 1234.5667"
puts "Contoh b ada angka di belakangan: #{b.to_i}"

c = "abc"

wicky-andrian

a = "1234.567"
puts a
puts "Kelas awal #{a.class}"

b = a.to_f

puts b 
puts "Kelas b #{b.class}"

wicky-andrian

a = "Pemrograman Ruby"

puts a
puts "Objek ID: #{a.object_id}"

b = a.swapcase

puts b
puts "Objek ID: #{b.object_id}"