add railtie/rails support

lib/sqlite_extensions/uuid/rails.rb

@@ -0,0 +1,34 @@
+# frozen_string_literal: true
+
+require "sqlite_extensions/uuid"
+
+module SqliteExtensions
+  module UUID
+    class Railtie < Rails::Railtie
+      initializer "sqlite_extensions-uuid.patch_database_adapter" do
+        ActiveSupport.on_load(:active_record_sqlite3adapter) do
+          prepend DatabaseAdapterExtension
+        end
+      end
+
+      module DatabaseAdapterExtension
+        # https://github.com/rails/rails/blob/v8.0.0.rc1/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb#L815
+        def configure_connection
+          super
+
+          begin
+            @raw_connection.enable_load_extension(true)
+            @raw_connection.load_extension(SqliteExtensions::UUID.extension_path)
+          rescue SQLite3::Exception => e
+            # no such function: uuid (SQLite3::SQLException)
+            Rails.logger.error do
+              "Error loading sqlite extension '#{SqliteExtensions::UUID.extension_path}' (#{e})"
+            end
+          end
+        end
+      end
+
+      private_constant :DatabaseAdapterExtension
+    end
+  end
+end

sqlite_extensions-uuid.gemspec

@@ -15,6 +15,7 @@ Gem::Specification.new do |spec|
 
   spec.files = %w[
     lib/sqlite_extensions/uuid.rb
+    lib/sqlite_extensions/uuid/rails.rb
     ext/sqlite_extensions/uuid/sqlite3ext.h
     ext/sqlite_extensions/uuid/sqlite3.h
     ext/sqlite_extensions/uuid/sqlite3rc.h

test/test_uuid.rb

@@ -38,4 +38,8 @@ def test_it_works
       uuid
     )
   end
+
+  def test_rails_integration
+    skip "TODO"
+  end
 end