Ruby on Rails

Behavior Driven Development (BDD)
  User Acceptance test (capybara)
  Unit test (rspec)
  Integration test
  Stress test

Partial => Views
Helper  => 
Method  => Controller

====================
= Console commands =
====================

rails new .           = initialize rails in current folder
rails new [name]      = initailize rails with folder [name] with current directory
rails [command] -h    = see help for rails [command]
rails server          = starts rails server on localhost
rails console         = starts rails console
bundle install        = installs gems located in Gemfile

rails generate controller [name] [views name] = create [name] controller with [views name]
rails destroy controller [name] [views name]  = destroy [name] controller with [views name]

rails generate model [model name] [name:string] [price:integer] = creates [model name] model DB, assigns [data:type]
rails destroy model [model name]                                = destroy [model name] model

rails generate migration [command]  = generation migration file to run [command]

rails generate scaffold [model name] [name:string] [price:integer] = creates [model name] scaffold with [data:type]

rake -T                 = show rake help
rake db:reset           = clears the DB (does rake db:drop + rake db:create + rake db:migrate) and runs migration on a fresh DB
rake db:create          = creates the database for current environment
rake db:create:all      = creates the databases for all envs
rake db:drop            = drops the database for the current environment
rake db:drop:all        = drops the databases for all envs
rake db:migrate         = runs migration (up) for the current environment that have not run yet
rake db:migrate:status  = shows migration history
rake db:seed            = creates DB using seeds file
rake db:rollback        = reverts (down) last DB migrate (only works with migration!)
rake db:schema:load     = runs schema (state of DB as of last migration) file
rake db:schema:dump     = dumps DB state into schema file
rake db:schema:damp     = regenerate schema file


rails runner [filename.rb]  = excecutes [filename] in rails environment
ruby [filename.rb]          = excecutes [filename] in ruby environment

[DB name].all                     = list all records in DB
[DB name].where(key: true)        = list all records where(key: true)
[DB name].where(key: true).last   = list last record where(key: true)
[DB name].where(key: true).count  = count of all records where(key: true)

raise       = raises exception when running ruby code (in browser)
binding.pry = raises exception when running ruby code (in Rails console)