Question

I have the following 3 models in my application:

class Submission < ActiveRecord::Base
 has_many :linkedsubmissions
end

class Linkedsubmission < ActiveRecord::Base
  belongs_to :submission
  has_many   :lnksubtypes
end


class Lnksubtype < ActiveRecord::Base
  belongs_to :linkedsubmission
end

In the code below ‘@submission.linkedsubmissions.lnksubtypes‘ is incorrect.

@history = Audit.find(:all, :conditions => ["auditable_id IN (?)",@submission.linkedsubmissions.lnksubtypes.map{|b| b.LSU_ID} ])

I need to find all audits with ‘auditable_id’ in @submission.linkedsubmissions.lnksubtypes

Answer 1

You need to add the following has_many relationship to your Submission model.

class Submission < ActiveRecord::Base
 has_many :linkedsubmissions
 has_many :lnksubtypes, :through => :linkedsubmissions
end

Now, you’ll be able to reformat your query like this

@history = Audit.find(:all, :conditions => ["auditable_id IN (?)", @submission.lnksubtypes.map(&:LSU_ID) ])