#5168 has_one through doesn't work on new record - Ruby on Rails

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#5168 ✓invalid

has_one through doesn't work on new record

Reported by Tatsuya Ono | July 21st, 2010 @ 09:27 AM

Here is example:

class Organization < ActiveRecord::Base
  has_many :members
end
class Member < ActiveRecord::Base
  has_one :organization # or belongs_to
end
class MemberHouse < ActiveRecord::Base
  has_one :member # or belongs_to
  has_one :organization, :through => :member
end

Then...

@organization = Organization.last
@member = @organiation.members.last

@member_house = MemberHouse.new(:address => "87 Worship Street")
@member_house.member = @member

In this situation, I expect that @member_house.organization returns @organization; but it returns nil actually.

Comments and changes to this ticket

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Tatsuya Ono July 21st, 2010 @ 09:34 AM
here is the test code.
- patch-test-5168.diff 1.2 KB
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Subba July 22nd, 2010 @ 07:28 PM
using inverse_of will fix your problem.
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Jigar Patel July 24th, 2010 @ 11:50 AM
You are not saving the @member_house object. Save it and then assign a member to it. You can fetch organization after that.

Close the ticket since this is a coding issue and not a bug.
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Jigar Patel July 24th, 2010 @ 08:01 PM
- Assigned user set to “Pratik”
- Tag changed from “3.x” to “3.x, invalid”
Neeraj Singh July 26th, 2010 @ 08:37 PM
- State changed from “new” to “invalid”
- Importance changed from “” to “Low”