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#6289 ✓stale
Brian Gates

Rails 3.0.3 query creates spurious habtm association

Reported by Brian Gates | January 14th, 2011 @ 09:06 AM

Easiest to just show how to reproduce the error:
$ rails new testcase
$ cd testcase
$ rails generate model user type:string org_id:integer
$ rails generate model org
#in migration, add a children_parents join table
#user belongs_to :org
#parent and child each subclass user
#parent habtm children; child habtm parents
$ rake db:migrate
$ rails c
ruby-1.9.2-p0 > Org.create
=> #<Org id: 1>
ruby-1.9.2-p0 > c=Child.create(:org_id=>1)
=> #<Child id: 1, type: "Child", org_id: 1>
ruby-1.9.2-p0 > p=Parent.create(:org_id=>1)
=> <Parent id: 2, type: "Parent", org_id: 1>
ruby-1.9.2-p0 > p.children
=> []
ruby-1.9.2-p0 > c.parents
=> []
ruby-1.9.2-p0 > Parent.where('org_id=1').includes([:org,:children]).first.children
=> []
ruby-1.9.2-p0 > Parent.where('').includes(:org).first.children
=> []
ruby-1.9.2-p0 > Parent.where('').includes([:org,:children]).first.children
=> [#<Child id: 1, type: "Child", org_id: 1>]
ruby-1.9.2-p0 > Parent.where('').includes([:org,:children]).first.children.first.parents
=> []

Comments and changes to this ticket

  • rails

    rails April 19th, 2011 @ 01:00 AM

    • State changed from “new” to “open”

    This issue has been automatically marked as stale because it has not been commented on for at least three months.

    The resources of the Rails core team are limited, and so we are asking for your help. If you can still reproduce this error on the 3-0-stable branch or on master, please reply with all of the information you have about it and add "[state:open]" to your comment. This will reopen the ticket for review. Likewise, if you feel that this is a very important feature for Rails to include, please reply with your explanation so we can consider it.

    Thank you for all your contributions, and we hope you will understand this step to focus our efforts where they are most helpful.

  • rails

    rails April 19th, 2011 @ 01:00 AM

    • State changed from “open” to “stale”

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