install.rb

require 'find'
require 'fileutils'

RAILS_ROOT = File.dirname(__FILE__) + "/../../.."
MIGRATIONS_DIR = "#{RAILS_ROOT}/db/migrate/"


# This method will create a new migration filename
# Please note that this could be done with more sugar through the generator classes.
def build_migration_file_name (name)
  migration_number_strings = []
  Find.find(MIGRATIONS_DIR) do |filename|
    nr_scan = filename.scan( /((\d){3})[^\/]*rb$/ )
    while nr_scan.class == Array
      nr_scan = nr_scan[0]
    end
    migration_number_strings << nr_scan
  end
  sprintf "%.3d_%s.rb", ( migration_number_strings.map{ |s| s.to_s.to_i }.max + 1 ), name
end

# Create the new migration to support the tags_done_right system
filename = MIGRATIONS_DIR + (build_migration_file_name "create_tags")
puts "Printing to: " + filename
File.open(filename, 'w') do |f|
  f.write("# THIS IS AN AUTOGENERATED FILE BY TAGS_DONE_RIGHT
# This migration sets-up the database to store the tags in it.
# Advanced users may modify it to attach extra information to a tag
class CreateTags < ActiveRecord::Migration
  def self.up
    create_table :tags do |t|
      t.column :name, :string
    end
    add_index :tags, \"name\"
  end

  def self.down
    drop_table :tags
  end
end")
  end