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Make keys method aware of Rails/DeprecatedActiveModelErrorsMethods cop #702

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koic
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@koic koic commented May 4, 2022

This PR makes keys method aware of Rails/DeprecatedActiveModelErrorsMethods cop. It can emulate the following Rails's warning.

DEPRECATION WARNING: ActiveModel::Errors#keys is deprecated and will be removed in Rails 6.2.

The following is a bad / good example.

# bad
user.errors.keys.include?(:attr)

# good
user.errors.attribute_names.include?(:attr)

Before submitting the PR make sure the following are checked:

  • The PR relates to only one subject with a clear title and description in grammatically correct, complete sentences.
  • 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.
  • Ran bundle exec rake default. It executes all tests and runs RuboCop on its own code.
  • 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.
  • If this is a new cop, consider making a corresponding update to the Rails Style Guide.

…` cop

This PR makes `keys` method aware of `Rails/DeprecatedActiveModelErrorsMethods` cop.
It can emulate the following Rails's warning.

```console
DEPRECATION WARNING: ActiveModel::Errors#keys is deprecated and will be removed in Rails 6.2.
```

The following is a bad / good example.

```ruby
# bad
user.errors.keys.include?(:attr)

# good
user.errors.attribute_names.include?(:attr)
```
@koic koic merged commit 7c6f39a into rubocop:master May 12, 2022
@koic koic deleted the make_keys_method_aware_of_rails_deprecated_active_model_errors_methods branch May 12, 2022 22:41
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