From 03d9d5e38c843c938fc2ad81d81c8bc1cb073822 Mon Sep 17 00:00:00 2001
From: Justin Searls <searls@gmail.com>
Date: Mon, 1 May 2023 09:39:58 -0400
Subject: [PATCH] Add TargetRailsVersion to default.yml

After discovering that a valid configuration can't be created programmatically if it includes `TargetRailsVersion` without [patching it in](https://github.com/rubocop/rubocop-rails/blob/master/lib/rubocop/rails/inject.rb#L14) by doing an `instance_variable_set` on the `ConfigLoader`'s `@default_configuration`, it seems appropriate to explicitly list this property even though it's specific to rubocop-rails.

For example, before this commit, running:

```ruby
RuboCop::Config.create({
  "AllCops" => {
    "TargetRailsVersion" => 5.2
  }
}, "some_path")
```

Will emit this warning:

```
Warning: AllCops does not support TargetRailsVersion parameter.

Supported parameters are:

  - RubyInterpreters
  - Include
  - Exclude
  - DefaultFormatter
  - DisplayCopNames
  - DisplayStyleGuide
  - StyleGuideBaseURL
  - DocumentationBaseURL
  - ExtraDetails
  - StyleGuideCopsOnly
  - EnabledByDefault
  - DisabledByDefault
  - NewCops
  - UseCache
  - MaxFilesInCache
  - CacheRootDirectory
  - AllowSymlinksInCacheRootDirectory
  - TargetRubyVersion
  - SuggestExtensions
  - ActiveSupportExtensionsEnabled
```

Even though this is the domain of a plugin, it seems appropriate to add it since:

1. `ActiveSupportExtensionsEnabled` has similarly been added (perhaps for the same reason?)
2. RuboCop itself (and not rubocop-rails) actually contains the logic handling this setting  in [Config](/lib/rubocop/config.rb#L249-L258)
---
 config/default.yml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/config/default.yml b/config/default.yml
index e489328a4184..faa2b918a132 100644
--- a/config/default.yml
+++ b/config/default.yml
@@ -156,6 +156,8 @@ AllCops:
     rubocop-capybara: [capybara]
   # Enable/Disable checking the methods extended by Active Support.
   ActiveSupportExtensionsEnabled: false
+  # Used by rubocop-rails to set the version of Rails used by the inspected code
+  TargetRailsVersion: ~
 
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