1

I have a base class for a type of migration that occurs frequently:

class AddEventsBaseMigration < ActiveRecord::Migration
  #ITEMS = []

  def up
    #add the items
  end

  def down
    #remove the items that were added.
  end
end

Then, when it's time to add new stuff, I create an inherited migration:

class AddEvents0930 < AddEventsBaseMigration  
  ITEMS = [ ... ]
end

When I try to run this migration, I get this error:

rake aborted!
uninitialized constant AddEventsBaseMigration
C:/.../Source/db/migrate/20131002152826_add_events_0930.rb:1
c:0:in `migrate'
Tasks: TOP => db:migrate:up

What am I doing wrong here?

Ruby: 1.8.7 (2013-06-27 patchlevel 374) [i386-mingw32]

Rails: 3.2.13

Edit: I forgot to mention that I've tried:

require "add_events_base_migration"
require "./add_events_base_migration"
require "/db/migrate/add_events_base_migration"

And I get the error: no such file to load -- /db/migrate/add_events_base_migration

4

1 回答 1

0

你应该试试：

require_relative "add_events_base_migration"

例如，如果您在“test”目录中有单元测试类，并且在测试“test/data”目录下有它们的数据，那么您可以在测试用例中使用这样的行：

require_relative "data/customer_data_1"

如果你使用的是 Ruby 1.8，你可能需要使用这个库：

https://github.com/steveklabnik/require_relative

于 2013-10-02T18:01:13.597 回答