Drop support for Rails v6.1

Rails v6.1 has reached EOL as of October 1st, 2024, so we'll drop
support for it and raise the minimum version of Ruby to v2.7.

See this for more information: https://endoflife.date/rails.

.github/workflows/unit-tests.yml

@@ -11,7 +11,7 @@ jobs:
     strategy:
       matrix:
         ruby: ["3.0", "3.1", "3.2", "3.3"]
-        gemfile: [dev/gemfiles/rails-6.1.x.gemfile, dev/gemfiles/rails-7.0.x.gemfile, dev/gemfiles/rails-7.1.x.gemfile, Gemfile]
+        gemfile: [dev/gemfiles/rails-7.0.x.gemfile, dev/gemfiles/rails-7.1.x.gemfile, Gemfile]
     env: # $BUNDLE_GEMFILE must be set at the job level, so it is set for all steps
       BUNDLE_GEMFILE: ${{ github.workspace }}/${{ matrix.gemfile }}
     steps:

CHANGELOG.md

@@ -8,6 +8,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 ### Fixed
 
+* Drop support for Rails < 7.0 (TODO: add PR number)
 * Add support for Rails v7.2 and drop support for Rails < 6.1 (#70)
 
 ## Version 2.2.1 (2024-05-20)

Gemfile.lock

@@ -2,7 +2,7 @@ PATH
   remote: .
   specs:
     cocooned (2.2.1)
-      rails (>= 6.1, <= 8.0)
+      rails (>= 7.0, <= 8.0)
 
 GEM
   remote: https://rubygems.org/

README.md

@@ -5,7 +5,7 @@
 
 Cocooned makes it easier to handle nested forms in Rails.
 
-Cocooned is form builder-agnostic: it works with standard Rails (>= 6.1, < 8.0) form helpers, [Formtastic](https://github.com/justinfrench/formtastic) or [SimpleForm](https://github.com/plataformatec/simple_form).
+Cocooned is form builder-agnostic: it works with standard Rails (>= 7.0, < 8.0) form helpers, [Formtastic](https://github.com/justinfrench/formtastic) or [SimpleForm](https://github.com/plataformatec/simple_form).
 
 1. [Background](#some-background)
 2. [Installation](#installation)

cocooned.gemspec

@@ -38,9 +38,9 @@ Gem::Specification.new do |spec|
   spec.files = `git ls-files -z`.split("\x0").reject do |f|
     f.match(excluded_dirs) || excluded_files.include?(f)
   end
-  spec.required_ruby_version = '>= 2.6'
+  spec.required_ruby_version = '>= 2.7'
 
-  spec.add_dependency 'rails', '>= 6.1', '<= 8.0'
+  spec.add_dependency 'rails', '>= 7.0', '<= 8.0'
 
   spec.add_development_dependency 'bundler', '~> 2.1'
   spec.add_development_dependency 'rake', '~> 13.0'

dev/rubocop.yml

@@ -6,7 +6,7 @@ require:
 
 AllCops:
   NewCops: enable
-  TargetRubyVersion: 2.6
+  TargetRubyVersion: 2.7
 
 Naming/FileName:
   Exclude:

npm/README.md

@@ -4,7 +4,7 @@ This is a companion package for the [cocooned Ruby gem](https://rubygems.org/gem
 
 Cocooned makes it easier to handle nested forms in Rails.
 
-Cocooned is form builder-agnostic: it works with standard Rails (>= 6.1, < 8.0) form helpers, [Formtastic](https://github.com/justinfrench/formtastic) or [SimpleForm](https://github.com/plataformatec/simple_form).
+Cocooned is form builder-agnostic: it works with standard Rails (>= 7.0, < 8.0) form helpers, [Formtastic](https://github.com/justinfrench/formtastic) or [SimpleForm](https://github.com/plataformatec/simple_form).
 
 1. [Installation](#installation)
 2. [Import](#import), default, custom or with [jQuery integration](#jquery-integration)

spec/dummy/config/application.rb

@@ -14,7 +14,7 @@
 module Dummy
   class Application < Rails::Application
     # Initialize configuration defaults for originally generated Rails version.
-    config.load_defaults 6.1
+    config.load_defaults 7.0
     config.active_support.cache_format_version = 7.0
 
     # Configuration for the application, engines, and railties goes here.