I make two class job and step, its associate with accepts_nested_attributes_for, has_many and belongs_to. liks:
class Job < ActiveRecord::Base has_many :steps, :dependent => :destroy accepts_nested_attributes_for :steps
validate :job_validate , :on => :create def job_validate p "job validate" end end
class Step < ActiveRecord::Base belongs_to :job
# here just test if called this validates_presence_of validates_presence_of :name , :if => Proc.new { |step| p " step name validates_presence_of" } validate_on_create :step_validate
private def step_validate p self p "step validate" end end
Tow migtations links: class CreateJobs < ActiveRecord::Migration def self.up create_table :jobs do |t| t.string :name
t.timestamps end end
def self.down drop_table :jobs end end
class CreateSteps < ActiveRecord::Migration def self.up create_table :steps do |t| t.string :name t.references :job t.timestamps end end
def self.down drop_table :steps end end
My problem is that when i testing them in script/console as follow: shell:$ script/console Loading shelllocal environment (Rails 2.3.5)
job = Job.new
=> #<Job id: nil, name: nil, created_at: nil, updated_at: nil>
job.steps.build
=> #<Step id: nil, name: nil, job_id: nil, created_at: nil, updated_at: nil>
job.save
" step name validates_presence_of" #<Step id: nil, name: nil, job_id: nil, created_at: nil, updated_at:
"step validate" " step name validates_presence_of" #<Step id: nil, name: nil, job_id: nil, created_at: nil, updated_at:
"step validate" "job validate" => true
As you see the "step validate" called two times.I think "step validate" be called once is correct. I don't know why its called tow times? Who can help me?
thank you !
