cmd.txt

ridk install
ridk

ruby
irb

ruby file.rb 
rufo file.rb 


ri 
rdoc
==========================================

===========
C:\Ruby25-x64\bin
C:\Ruby30-x64\bin

===========
/c/Ruby25-x64/bin/ruby
/c/Ruby25-x64/bin/gem

===========
gem install solargraph
gem install rufo
===========

=====================================================================================================
gem list
===========
gem list bundler
gem update bundler
gem cleanup bundler
===========
gem install sqlite3
gem install webpacker
gem install rails
gem install rails -v 5.2.6
gem install rails -v 6.1.4.4
gem install rails -v 5.2.2.1
===========
rails -v
gem list rails
===========
rails new name_of_app
rails new test_app
rails new first_app
===========
rails _5.2.6_ new name_of_app
rails _5.2.6_ new test_app
rails _5.2.6_ new second_app
===========
rails server
rails s
rails server -b 0.0.0.0 -p 80
rails s -b 0.0.0.0

===========
gem uninstall rails -v 5.2.6
gem cleanup rails -v 5.2.6
===========

bundle info [gemname]
=====================================================================================================
(alt + p) => RACK_MINI_PROFILER 
?pp=disable
?pp=enable
==========================================
rails generate controller pages
rails g controller pages

rails generate migration create_articles
rails g migration create_articles
rails g migration add_timestamps_to_articles

===================
bundle install --without production # DEPRECATED
bundle config set --local without 'production' # not working
bundle config without production
===================
# Scaffold generator command to create an article model (with two attributes), 
articles controller, views for articles and migration file to create articles table:

rails generate scaffold Article title:string description:text
rails g scaffold Article title:string description:text
rails g scaffold User username:string email:string password:string
rails db:migrate
rails db:rollback
===================
rails routes --expanded
rails routes -c articles
rails routes -c articles | grep edit
===================
bundle exec rake schedular:clear_log
rake --tasks
rake log:clear
rake tmp:clear
===================
rails console
rails c
===========
Article.all # class name in models file

Article.create(title: "first article", description: "Description of first article") # make sure Article is capitalized if using this method

article = Article.new
article.title = "second article"
article.description = "description of second article"
article.save

article = Article.new(title: "third article", description: "description of third article")
article.save

Article.all
=====================================================================================================

reload!  => use this when change in models files
===================
# Call 'byebug' anywhere in the code to stop execution and get a debugger console
byebug
continue # again work server
# you can use on rails s
$ params
$ continue
===================
heroku login
heroku git:remote -a alpha-blog-rails-eg
git push heroku master
heroku run rails db:migrate
heroku open
heroku run rails console
=====================================================================================================
https://www.mashrurhossain.com/blog/rails6bootstrap4

yarn add bootstrap@5.1.3 jquery popper.js

yarn add jquery
yarn add bootstrap@5.1.3
yarn add @popperjs/core@2.10.2

yarn add popper.js
yarn add jquery@3.1.1
===================

=====================================================================================================

rails g scaffold User username:string email:string password:string
rails db:migrate
rails g migration add_user_id_to_articles
rails db:migrate

===================
rails g migration create_users
rails db:migrate
rails g migration add_user_id_to_articles
rails db:migrate
===================
rails generate migration add_password_digest_to_users
rails db:migrate
===================
rails generate migration add_admin_to_users
rails db:migrate
===================


=====================================================================================================

rails test
rails generate test_unit:scaffold category
rails test test/controllers
rails test test/system
rails test test/controllers/categories_controller_test.rb
rails generate integration_test create_category
rails test
rails test test/integration/create_category_test.rb
rails generate integration_test list_categories
rails test test/integration/list_categories.rb

===================
rails generate migration create_article_categories
rails db:migrate
===================

=====================================================================================================
bundle config without production
bundle install

cd 1-complete_ruby__mashrur_hossain/2-intro_ruby_on_rails/alpha_blog/
rails s -b 0.0.0.0
rails c

rails routes --expanded | grep edit
rails routes -E
rails routes -c articles
rails routes -c articles --expanded
rails routes -c users

dokku run production rails routes --expanded

=====================================================================================================
=====================================================================================================
=====================================================================================================
=====================================================================================================
=====================================================================================================
    sudo apt install postgresql
    sudo service postgresql start
    sudo -u postgres psql
    sudo -u postgres createuser <username>
    sudo -u postgres createdb <dbname>
    sudo -u postgres psql

    pgrep -u postgres -fa -- -D 
    =============================================
    git clone
    cd repo
    # install rvm (rvm --version)
    rvm install "ruby-2.5.3"
    gem install bundler -v 1.17.3
    bundle install
    rake db:create
    rake db:migrate

    rails s # webserver
    rails c # debug development

    sudo apt-get install libpq-dev
    =============================================
    ls /etc/postgresql/12/main
    cat /etc/postgresql/12/main/
    service postgresql
    service postgresql status

    sudo -i -u postgres
    sudo su postgres

    sudo -u postgres createuser <username>
    sudo -u postgres createuser --interactive
    sudo -u postgres createdb spider_nest_development
    sudo -u postgres createdb spider_nest_development

    sudo -u postgres psql
    sudo -u ahmed psql

    \conninfo
    \l
    \du
    =====================================================================================================
    wsl --list --verbose
    wsl --shutdown
=====================================================================================================