From 04f6f787309f04576653ff9d32b2d294bd61ea1c Mon Sep 17 00:00:00 2001
From: Dylan Knutson <tcdknutson@gmail.com>
Date: Fri, 18 Jul 2025 19:36:46 +0000
Subject: [PATCH] set associations on aux records

---
 spec/active_record/has_aux_table_spec.rb | 12 ++++++++++++
 spec/spec_helper.rb                      |  1 -
 spec/spec_models.rb                      |  2 +-
 3 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/spec/active_record/has_aux_table_spec.rb b/spec/active_record/has_aux_table_spec.rb
index c30bbfb..17db2ef 100644
--- a/spec/active_record/has_aux_table_spec.rb
+++ b/spec/active_record/has_aux_table_spec.rb
@@ -99,6 +99,18 @@ RSpec.describe HasAuxTable do
     expect(lot.vehicles.first.name).to eq("vehicle1")
   end
 
+  it "can set association on aux record" do
+    driver = Driver.create!(name: "John Doe")
+    car = Car.create!(name: "Honda Civic")
+    driver.car = car
+    expect(driver.car).to eq(car)
+    expect(driver.car_id).to eq(car.id)
+    driver.save!
+
+    driver = Driver.find(driver.id)
+    expect(driver.car).to eq(car)
+  end
+
   describe "#changed?" do
     it "returns true if the main record changes" do
       car = Car.create!(name: "Honda Civic")
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 4be4a1a..e00bc0c 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -90,7 +90,6 @@ module SpecHelper
         t.create_aux :driver do |t|
           t.integer :license_number
           t.references :car,
-                       null: false,
                        foreign_key: {
                          to_table: :vehicles_car_aux,
                          primary_key: :base_table_id
diff --git a/spec/spec_models.rb b/spec/spec_models.rb
index ae6dbe9..3bc7dfd 100644
--- a/spec/spec_models.rb
+++ b/spec/spec_models.rb
@@ -28,7 +28,7 @@ end
 
 class Driver < Person
   aux_table :driver
-  belongs_to :car, inverse_of: :drivers
+  belongs_to :car, optional: true
 end
 
 class Captain < Person