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https://github.com/st0012/debug-issue
https://github.com/st0012/debug-issue
Last synced: 10 days ago
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- Host: GitHub
- URL: https://github.com/st0012/debug-issue
- Owner: st0012
- Created: 2022-11-11T17:54:30.000Z (about 2 years ago)
- Default Branch: main
- Last Pushed: 2022-11-11T19:13:34.000Z (about 2 years ago)
- Last Synced: 2025-01-03T15:28:52.270Z (22 days ago)
- Language: Ruby
- Size: 29.3 KB
- Stars: 0
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# README
1. Run `bundle install` and `bin/rails db:migrate`
2. Run `bin/rails s`
3. Visit [http://localhost:3000/posts](http://localhost:3000/posts)
4. The server should stop at the breakpoint:
```
Started GET "/posts" for 127.0.0.1 at 2022-11-11 18:54:50 +0000
ActiveRecord::SchemaMigration Pluck (0.2ms) SELECT "schema_migrations"."version" FROM "schema_migrations" ORDER BY "schema_migrations"."version" ASC
Processing by PostsController#index as HTML
[1, 10] in ~/projects/debug-issue/app/controllers/posts_controller.rb
1| class PostsController < ApplicationController
2| before_action :set_post, only: %i[ show edit update destroy ]
3|
4| # GET /posts or /posts.json
5| def index
=> 6| binding.b
7| @posts = Post.all
8| a = 1
9| b = 2
10| end
```
5. Type `n` TWICE, and then the debugger would stop at `zeitwerk/kernel.rb` while it should stop at `a = 1`
**1st `n`**
```
(rdbg) n # next command
[2, 11] in ~/projects/debug-issue/app/controllers/posts_controller.rb
2| before_action :set_post, only: %i[ show edit update destroy ]
3|
4| # GET /posts or /posts.json
5| def index
6| binding.b
=> 7| @posts = Post.all
8| a = 1
9| b = 2
10| end
11|
=>#0 PostsController#index at ~/projects/debug-issue/app/controllers/posts_controller.rb:7
#1 ActionController::BasicImplicitRender#send_action(method="index", args=[]) at ~/.gem/ruby/3.1.2/gems/actionpack-7.0.4/lib/action_controller/metal/basic_implicit_render.rb:6
# and 76 frames (use `bt' command for all frames)
```
**2nd `n`**
```
(rdbg) n # next command
[23, 32] in ~/.gem/ruby/3.1.2/gems/zeitwerk-2.6.6/lib/zeitwerk/kernel.rb
23| alias_method :zeitwerk_original_require, :require
24| end
25|
26| # @sig (String) -> true | false
27| def require(path)
=> 28| if loader = Zeitwerk::Registry.loader_for(path)
29| if path.end_with?(".rb")
30| required = zeitwerk_original_require(path)
31| loader.on_file_autoloaded(path) if required
32| required
=>#0 Kernel#require(path="/Users/hung-wulo/projects/debug-issue/ap...) at ~/.gem/ruby/3.1.2/gems/zeitwerk-2.6.6/lib/zeitwerk/kernel.rb:28
#1 PostsController#index at ~/projects/debug-issue/app/controllers/posts_controller.rb:7
# and 77 frames (use `bt' command for all frames)
```