Migration problem

rubyonrails-talk
1

Hi,

I seem to have a fundamental misunderstaning or Rake, Ruby, or Migrations.(or perhaps all three)

I have done dozens of simple Migrations with just a self.up and self.down... Now I have one that is more complex and I want to call other methods within the migration.. but it doesn't work... Here is my self.up:   def self.up     drop_old_tables     create_tables     populate_questions     populate_forms   end

here is the error message: undefined method `drop_old_tables' for #<ActiveRecord::ConnectionAdapters::MysqlAdapter:0x499deb0>

I have a drop_old_tables method defined lower down.

Thanks in anticipation for any help

Giorgio

2

I figured it out myself!

All the methods must be class methods as there is no instance I suppose. ie self.drop_old_tables etc.

Cheers Giorgio

giorgio wrote:

3

Make sure the other methods are defined on the same class and as class methods with "def self.x"

Michael

giorgio wrote: