cluesque

d5toqvrtbm8bbu=> SELECT id, created_at FROM widgets WHERE id = 1155301;
   id    |         created_at         
---------+----------------------------
 1155301 | 2014-01-10 02:59:47.856214
(1 row)

d5toqvrtbm8bbu=> CREATE UNIQUE INDEX widgets_pkey ON widgets(id);
CREATE INDEX
d5toqvrtbm8bbu=> SELECT id, created_at FROM widgets WHERE id = 1155301;
 id | created_at 

cluesque

traceroute to 216.81.59.173 (216.81.59.173), 64 hops max, 52 byte packets
...
 8  100gigabitethernet11-1.core1.ash1.he.net (184.105.223.165)  14.978 ms
 9  10gigabitethernet1-2.core1.atl1.he.net (184.105.213.110)  33.392 ms
10  216.66.0.26 (216.66.0.26)  29.782 ms
11  *
12  episode.iv (206.214.251.1)  120.330 ms
13  a.new.hope (206.214.251.6)  73.192 ms
14  it.is.a.period.of.civil.war (206.214.251.9)  98.692 ms
15  rebel.spaceships (206.214.251.14)  68.083 ms

cluesque

# Include this in your development and test environments
# if you want to run all Resque processors inline 
# (avoiding the need for Redis and a separate worker process)

# In config/environments/{development,test}.rb:
# config.after_initialize do
#   require 'resque_inline'
# end

module Resque

cluesque

# A migration that will continue to work after refactoring
class FutureProofMigration < ActiveRecord::Migration
  # Redefine models used in the migration as empty inner classes.  This removes all validations and magic.
  class Model < ActiveRecord::Base; end

  # Either don't rely on associations or declare them as referring to the new inner class
  class DependentModel < ActiveRecord::Base
    belongs_to :model, :class_name => "FutureProofMigration::Model"
  end