Search code examples
ruby-on-railsactivemodelransack

Ransack association search breaking after upgrading rails

I have a model, Student, that with a habtm relationship with another model, Group. The following code:

Student.ransack(groups_id_eq: 22839).result

Produces the following SQL:

SELECT "students".* FROM "students" 
LEFT OUTER JOIN "groups_students" ON "groups_students"."student_id" = "students"."id" 
LEFT OUTER JOIN "groups" ON "groups"."id" = "groups_students"."group_id" 
WHERE "groups"."id" = NULL

Notice that it's converting 22839 into NULL

This was working before upgrading to rails 5.

I have another model, User, with the same habtm relationship with groups. When I try Student.ransack(groups_id_eq: 22839).result it works and produces the desired SQL. The difference between two models is that Student has a uuid id, whereas User

Edit: This does appear to be a bug and I've submitted an issue with a more comprehensive gist.

Solution

  • I have resolved the issue by monkey patching ActiveRecord AliasTracker.

    See my gh issue for the full explanation.