Worked on the Shopify/rails repository to enhance ActiveRecord association handling by implementing accurate has_many :through query logic that respects default scopes on join models. Addressed scenarios where default scopes, such as deletion status, could be unintentionally bypassed by qualifying unscope values with explicit table names, thereby improving query accuracy and consistency. Developed comprehensive tests to validate the new behavior and prevent future regressions. The work focused on improving code readability and maintainability within the Ruby on Rails framework, leveraging skills in Ruby, ActiveRecord, and database management to ensure that joined queries consistently honor default scope constraints across associations.