Using a method in seeds.rb in Ruby On Rails

I am trying to add a method to my开发者_JAVA技巧 seeds.rb so that I don't have to write a bunch of verbose code. However, depending on the placement of the create_deliverable method I get one of two error messages when running db:setup.

When method is before call

rake aborted! private method 'create_deliverable' called for #

When method is after call

rake aborted! undefined method `create_deliverable' for #

Is it not possible to uses methods in seeds.rb? Am I somehow calling the method incorrectly (I've tried calling with and without the self.)?

Method

def create_deliverable(complexity, project_phase_id, deliverable_type_id)
  Deliverable.create(:name => (0...8).map{65.+(rand(25)).chr}.join,
      :size => 2 + rand(6) + rand(6),
      :rate => 2 + rand(6) + rand(6),
      :deliverable_type_id => deliverable_type_id,
      :project_phase_id => project_phase_id,
      :complexity => complexity)
end

Calling Code

@wf_project.project_phases.each do |phase|
  DeliverableType.find_by_lifecycle_phase(phase.lifecycle_phase_id).each do
    |type|
    self.create_deliverable("Low", type.id, phase.id)

    self.create_deliverable("Medium", type.id, phase.id)

    self.create_deliverable("High", type.id, phase.id)
  end
end

Make sure you define the method before calling it:

def test_method
  puts "Hello!"
end

test_method

If you're going to use self., use it on the method definition, not the call.

def self.create_deliverable(...)
    ...
end
...
create_deliverable("Low", type.id, phase.id)
...

It's my understanding that .rb files without a class definition get wrapped in an anonymous ruby class when they are run, so defining the method on self should work just fine.

Looks to me like you placed your create_deliverable method after private access modifier in your script. Put it after public.

public

    def create_deliverable(complexity, project_phase_id, deliverable_type_id)
      Deliverable.create(:name => (0...8).map{65.+(rand(25)).chr}.join,
          :size => 2 + rand(6) + rand(6),
          :rate => 2 + rand(6) + rand(6),
          :deliverable_type_id => deliverable_type_id,
          :project_phase_id => project_phase_id,
          :complexity => complexity)
    end
private # to keep the rest of methods private