accepts_nested_attributes_for child association validation failing

Question

I\'m using accepts_nested_attributes_for in one of my Rails models, and I want to save the children after creating the parent.

The form works perfectly, but the vali

Answer 1

Only validate the relationship, not the ID:

class Task < ActiveRecord::Base
  belongs_to :project

  validates_presence_of :project
end

As soon as the association is populated, ActiveRecord will consider the validation to have succeeded, whether or not the model is saved. You might want to investigate autosaving as well, to ensure the task's project is always saved:

class Task < ActiveRecord::Base
  belongs_to :project, :autosave => true

  validates_presence_of :project
end