Update Gemfile and CI configuration to support multiple Rails versions

.github/workflows/main.yml

@@ -10,19 +10,39 @@ on:
 jobs:
   build:
     runs-on: ubuntu-latest
-    name: Ruby ${{ matrix.ruby }}
+    name: Ruby ${{ matrix.ruby }} - Rails ${{ matrix.rails }}
     strategy:
+      fail-fast: false
       matrix:
-        ruby:
-          - '3.2'
-          - '3.3'
-          - '3.4'
+        include:
+          # Test with latest patch versions
+          - ruby: '3.2'
+            rails: '~> 7.2.0'
+          - ruby: '3.3'
+            rails: '~> 7.2.0'
+          - ruby: '3.4'
+            rails: '~> 7.2.0'
+          - ruby: '3.2'
+            rails: '~> 8.0.0'
+          - ruby: '3.3'
+            rails: '~> 8.0.0'
+          - ruby: '3.4'
+            rails: '~> 8.0.0'
+
     steps:
     - uses: actions/checkout@v5
     - name: Set up Ruby
       uses: ruby/setup-ruby@v1
       with:
         ruby-version: ${{ matrix.ruby }}
-        bundler-cache: true
+        bundler-cache: false
+    - name: Set Rails version
+      run: |
+        echo "RAILS_VERSION=${{ matrix.rails }}" >> $GITHUB_ENV
+    - name: Install dependencies
+      run: |
+        bundle install --jobs 4 --retry 3
+      env:
+        RAILS_VERSION: ${{ matrix.rails }}
     - name: Run the default task
       run: bundle exec rake

Gemfile

@@ -4,11 +4,19 @@ source 'https://rubygems.org'
 
 gemspec
 
-version = ENV['RAILS_VERSION'] || '8.0'
+# Allow testing different Rails versions via environment variable
+rails_version = ENV['RAILS_VERSION'] || '~> 8.0.0'
 
-gem_version = "~> #{version}.0"
-gem 'actionpack', gem_version
-gem 'activemodel', gem_version
+if rails_version.start_with?('~>')
+  # Version constraint specified (e.g., "~> 7.2.0")
+  gem 'actionpack', rails_version
+  gem 'activemodel', rails_version
+else
+  # Legacy format support (e.g., "7.2")
+  gem_version = "~> #{rails_version}.0"
+  gem 'actionpack', gem_version
+  gem 'activemodel', gem_version
+end
 
 group :development, :test do
   gem 'factory_bot'

structured_params.gemspec

@@ -29,6 +29,6 @@ Gem::Specification.new do |spec|
     'rubygems_mfa_required' => 'true'
   }
 
-  spec.add_dependency 'actionpack', '~> 8.0.0'
-  spec.add_dependency 'activemodel', '~> 8.0.0'
+  spec.add_dependency 'actionpack', '>= 7.2', '< 9.0'
+  spec.add_dependency 'activemodel', '>= 7.2', '< 9.0'
 end