CODEWITHSUNDEEP
activerecordassociationsruby-on-rails-3.2
elhoyos
elhoyos

Reputation: 869

Rails - belongs_to association not updating foreign key

I have the following:

class Publication < ActiveRecord::Base
  belongs_to :project, :inverse_of => :publication

  before_create :bind_project

  private
    def bind_project
      self.create_project
    end
end

class Project < ActiveRecord::Base
  has_one :publication, :inverse_of => :project
end

According to this when creating a new Publication the publication_id attribute on the project model should be set by the create_project method.

Why it does not happen?

This is what I see on bind_project:

The database reflects this also: the projects.publication_id column is NULL.

Upvotes: 0

Views: 903

Answers (1)

Atastor
Atastor

Reputation: 741

Seems a bit strange, that you try to access the create_project method in a before_create callback. Typo? An after_create callback seems to be more appropriate.

Moreover: What for do you need the publication_id attribute on the has_one side of an association? There only needs to be one _id attribute on the belongs_to side.

Addendum to my first paragraph: As I see it, you are trying to use Rails magic on the associated object (the create_project method) before the actual base object is finished being created. Although this might work, this would be my first point to investigate.

Upvotes: 1

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