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Add new Rails/RootPublicPath cop #588

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leoarnold
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Instead of

Rails.root.join('public')
Rails.root.join('public/file.pdf')
Rails.root.join('public', 'file.pdf')

we can use

Rails.public_path
Rails.public_path.join('file.pdf')
Rails.public_path.join('file.pdf')

Before submitting the PR make sure the following are checked:

  • Wrote good commit messages.
  • Commit message starts with [Fix #issue-number] (if the related issue exists).
  • Feature branch is up-to-date with master (if not - rebase it).
  • Squashed related commits together.
  • Added tests.
  • Added an entry (file) to the changelog folder named {change_type}_{change_description}.md if the new code introduces user-observable changes. See changelog entry format for details.
  • The PR relates to only one subject with a clear title
    and description in grammatically correct, complete sentences.
  • Run bundle exec rake default. It executes all tests and RuboCop for itself, and generates the documentation.
  • If this is a new cop, consider making a corresponding update to the Rails Style Guide.

@leoarnold leoarnold force-pushed the leoarnold/rails-root-public-path branch from 6f726fc to d3b0bc9 Compare November 21, 2021 05:59
Instead of

```ruby
Rails.root.join('public')
Rails.root.join('public/file.pdf')
Rails.root.join('public', 'file.pdf')
```

we can use

```ruby
Rails.public_path
Rails.public_path.join('file.pdf')
Rails.public_path.join('file.pdf')
```
@leoarnold leoarnold force-pushed the leoarnold/rails-root-public-path branch from d3b0bc9 to ce65d64 Compare November 21, 2021 06:55

it "registers an offense when using `Rails.root.join('public/file.pdf')`" do
expect_offense(<<~RUBY)
Rails.root.join('public/file.pdf')
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Will it detect "public/#{file}.pdf"?

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Not yet. Will work on that.

Rails/RootPublicPath:
Description: "Favor `Rails.public_path` over `Rails.root` with `'public'`."
Enabled: pending
VersionAdded: '2.13'
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Suggested change
VersionAdded: '2.13'
VersionAdded: '<<next>>'


RESTRICT_ON_SEND = %i[join].to_set.freeze

PATTERN = %r{^public(/|$)}.freeze
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\A and \z would be preferable if it is unexpecting a match to a multiline.

Suggested change
PATTERN = %r{^public(/|$)}.freeze
PATTERN = %r{\Apublic(/|\z)}.freeze

@@ -484,3 +484,4 @@
[@theunraveler]: https://github.com/theunraveler
[@pirj]: https://github.com/pirj
[@vitormd]: https://github.com/vitormd
[@leoarnold]: https://github.com/leoarnold
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Account name will be auto-inserted, so it's better to remove it.

@koic
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koic commented Dec 1, 2021

@leoarnold Can you rebase with the latest mater branch?

@pirj
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pirj commented Dec 25, 2021

@leoarnold Ping

@koic
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koic commented Jun 6, 2022

I've cherry-picked this PR into the master branch.
5fed4f6

The following can be extended later.
#588 (comment)

Thank you.

@koic koic closed this Jun 6, 2022
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3 participants