Restrict to Rails < 7, minimize active record patch

... by delegating to super so we don't have to copy more of active
record than necessary.

lib/permanent_records.rb

@@ -281,7 +281,8 @@ def self.dependent_permanent_reflections(klass)
 ActiveSupport.on_load(:active_record) do
   ActiveRecord::Base.include PermanentRecords::ActiveRecord
 
-  if [ActiveRecord::VERSION::MAJOR, ActiveRecord::VERSION::MINOR] == [5, 2] || ActiveRecord::VERSION::MAJOR > 5
+  if [ActiveRecord::VERSION::MAJOR, ActiveRecord::VERSION::MINOR] == [5, 2] ||
+     ActiveRecord::VERSION::MAJOR.between(5, 7)
     require 'permanent_records/active_record_5_2'
   end
 end

lib/permanent_records/active_record_5_2.rb

@@ -1,40 +1,34 @@
-# rubocop:disable Metrics/AbcSize
 # Support destroy for rails belongs_to assocations.
 module HandlePermanentRecordsDestroyedInBelongsToAssociation
   def handle_dependency
     return unless load_target
 
+    # only patch :destroy case and delegate to super otherwise
     case options[:dependent]
     when :destroy
       target.destroy
       raise ActiveRecord::Rollback if target.respond_to?(:deleted?) && !target.deleted?
     else
-      target.send(options[:dependent])
+      super
     end
   end
 end
 
-# rubocop:disable Metrics/MethodLength
-# rubocop:disable Metrics/CyclomaticComplexity
-# Support destroy for rails 5.2. has_on associations.
+# Support destroy for rails 5.2. has_one associations.
 module HandlePermanentRecordsDestroyedInHasOneAssociation
   def delete(method = options[:dependent])
     return unless load_target
 
+    # only patch :destroy case and delegate to super otherwise
     case method
-    when :delete
-      target.delete
     when :destroy
       target.destroyed_by_association = reflection
       target.destroy
       throw(:abort) if target.respond_to?(:deleted?) && !target.deleted?
-    when :nullify
-      target.update_columns(reflection.foreign_key => nil) if target.persisted?
+    else
+      super(method)
     end
   end
 end
-# rubocop:enable Metrics/CyclomaticComplexity
-# rubocop:enable Metrics/MethodLength
-# rubocop:enable Metrics/AbcSize
 ActiveRecord::Associations::BelongsToAssociation.prepend(HandlePermanentRecordsDestroyedInBelongsToAssociation)
 ActiveRecord::Associations::HasOneAssociation.prepend(HandlePermanentRecordsDestroyedInHasOneAssociation)

permanent_records.gemspec

@@ -22,8 +22,8 @@ Gem::Specification.new do |s|
   s.homepage = 'https://github.com/JackDanger/permanent_records'
   s.require_paths = ['lib']
 
-  s.add_runtime_dependency 'activerecord'
-  s.add_runtime_dependency 'activesupport'
+  s.add_runtime_dependency 'activerecord', '< 7'
+  s.add_runtime_dependency 'activesupport', '< 7'
 
   s.add_development_dependency 'appraisal'
   s.add_development_dependency 'database_cleaner', '>= 1.5.1'