binding.irb/debugger/binding.pry

  User Load (0.0ms)  SELECT "users".* FROM "users" WHERE "users"."id" = ? LIMIT ?  [["id", 23], ["LIMIT", 1]]
  ↳ app/controllers/application_controller.rb:12:in `project_owner?'

From: /Users/nakayama_bird/workspace/everydayrails_rspec/everydayrails-rspec-jp-2024/app/controllers/tasks_controller.rb @ line 21 :

    16:   def edit
    17:   end
    18: 
    19:   # POST /tasks or /tasks.json
    20:   def create
 => 21:     binding.irb
    22:     @task = @project.tasks.new(task_params)
    23: 
    24:     respond_to do |format|
    25:       if @task.save
    26:         format.html { redirect_to @project, notice: "Task was successfully created." }

irb:rdbg(#<TasksController:0x000000012...):055> task_params
#<ActionController::Parameters {"name"=>"新しいタスク", "completed"=>"0"} permitted: true>
irb:rdbg(#<TasksController:0x000000012...):056> debug
IRB is already running with a debug session.

def fizz_buzz(n)
  if n % 15 == 0
    binding.irb
    'Fizz Buzz'
  elsif n % 3 == 0
#....

❯ ruby ruby-book/lib/fizz_buzz_chapter_02.rb
1
2
Fizz
4
Buzz
Fizz
Ignoring prism-0.24.0 because its extensions are not built. Try: gem pristine prism --version 0.24.0

From: ruby-book/lib/fizz_buzz_chapter_02.rb @ line 3 :

    1: def fizz_buzz(n)
    2:   if n % 15 == 0
 => 3:     binding.irb
    4:     'Fizz Buzz'
    5:   elsif n % 3 == 0
    6:     'Fizz'
    7:   elsif n % 5 == 0
    8:     'Buzz'

irb(main):001> p n
15
=> 15

irb(main):001> IRB.version
=> "irb 1.15.2 (2025-04-03)"
irb(main):001> show_cmds

Debugging
  debug          Start the debugger of debug.gem.
  break          Start the debugger of debug.gem and run its `break` command.
  catch          Start the debugger of debug.gem and run its `catch` command.
  next           Start the debugger of debug.gem and run its `next` command.
  delete         Start the debugger of debug.gem and run its `delete` command.
  step           Start the debugger of debug.gem and run its `step` command.
  continue       Start the debugger of debug.gem and run its `continue` command.
  finish         Start the debugger of debug.gem and run its `finish` command.
  backtrace      Start the debugger of debug.gem and run its `backtrace` command.
  info           Start the debugger of debug.gem and run its `info` command.

require 'debug'
def fizz_buzz(n)
  if n % 15 == 0
    binding.b
    'Fizz Buzz'

[1, 10] in ruby-book/lib/fizz_buzz_chapter_02.rb
     1| require 'debug'
     2| def fizz_buzz(n)
     3|   if n % 15 == 0
=>   4|     binding.b
     5|     'Fizz Buzz'

def fizz_buzz(n)
  if n % 15 == 0
    debugger
    'Fizz Buzz'
  elsif n % 3 == 0
#...

❯ ruby ruby-book/lib/fizz_buzz_chapter_02.rb
1
2
Fizz
4
Buzz
Fizz
ruby-book/lib/fizz_buzz_chapter_02.rb:3:in `fizz_buzz': undefined local variable or method `debugger' for main (NameError)

    debugger
    ^^^^^^^^
        from ruby-book/lib/fizz_buzz_chapter_02.rb:20:in `<main>'

require 'debug'
def fizz_buzz(n)
  if n % 15 == 0
    debugger
    'Fizz Buzz'
  elsif n % 3 == 0

❯ ruby ruby-book/lib/fizz_buzz_chapter_02.rb
1
2
Fizz
4
Buzz
Fizz
[1, 10] in ruby-book/lib/fizz_buzz_chapter_02.rb
     1| require 'debug'
     2| def fizz_buzz(n)
     3|   if n % 15 == 0
=>   4|     debugger
     5|     'Fizz Buzz'
     6|   elsif n % 3 == 0
     7|     'Fizz'
     8|   elsif n % 5 == 0
     9|     'Buzz'
    10|   else
=>#0    Object#fizz_buzz(n=15) at ruby-book/lib/fizz_buzz_chapter_02.rb:4
  #1    <main> at ruby-book/lib/fizz_buzz_chapter_02.rb:21
(rdbg) 

  ↳ app/controllers/application_controller.rb:12:in `project_owner?'
[17, 26] in ~/workspace/everydayrails_rspec/everydayrails-rspec-jp-2024/app/controllers/tasks_controller.rb
    17|   end
    18| 
    19|   # POST /tasks or /tasks.json
    20|   def create
    21|     @task = @project.tasks.new(task_params)
=>  22|     debugger
    23| 
    24|     respond_to do |format|
    25|       if @task.save

# Gemfile
group :development, :test do
  # See https://guides.rubyonrails.org/debugging_rails_applications.html#debugging-with-the-debug-gem
  gem 'debug', platforms: %i[mri windows]

(rdbg) s    # step command
[8, 17] in ruby-book/lib/fizz_buzz_chapter_02.rb
     8|   elsif n % 5 == 0
     9|     'Buzz'
    10|   else
    11|     n.to_s
    12|   end
=>  13| end

rdbg -c -- bundle exec rspec spec/models/user_spec.rb 
WARN: Unresolved or ambiguous specs during Gem::Specification.reset:
      rdoc (>= 4.0.0)
      Available/installed versions of this gem:
      - 6.13.1
      - 6.12.0
      - 6.7.0
      - 6.6.3.1
      - 6.6.2
WARN: Clearing out unresolved specs. Try 'gem cleanup <gem>'
Please report a bug if this causes problems.
[4, 13] in ~/.rbenv/versions/3.3.0/bin/rspec
     4| #
     5| # The application 'rspec-core' is installed as part of a gem, and
     6| # this file is here to facilitate running it.
     7| #
     8| 
=>   9| require 'rubygems'
    10| 
    11| Gem.use_gemdeps
    12| 
    13| version = ">= 0.a"