rake db:copy_migrations task, which copies railties migrations into application's db/migrate directory
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@ -5,6 +5,28 @@ namespace :db do
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ActiveRecord::Migrator.migrations_path = Rails.application.config.paths.db.migrate.to_a.first
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end
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desc "Copies missing migrations from Railties (e.g. plugins, engines). You can specify Railties to use with FROM=railtie1,railtie2"
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task :copy_migrations => :load_config do
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to_load = ENV["FROM"].blank? ? :all : ENV["FROM"].split(",").map {|n| n.strip }
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railties = {}
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Rails.application.railties.all do |railtie|
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next unless to_load == :all || to_load.include?(railtie.railtie_name)
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if railtie.config.respond_to?(:paths) && railtie.config.paths.db
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railties[railtie.railtie_name] = railtie.config.paths.db.migrate.to_a.first
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end
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end
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copied = ActiveRecord::Migration.copy(ActiveRecord::Migrator.migrations_path, railties)
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if copied.blank?
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puts "No migrations were copied, project is up to date."
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else
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puts "The following migrations were copied:"
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puts copied.map{ |path| File.basename(path) }.join("\n")
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end
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end
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namespace :create do
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# desc 'Create all the local databases defined in config/database.yml'
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task :all => :load_config do
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@ -10,6 +10,55 @@ module RailtiesTest
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@app ||= Rails.application
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end
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def test_copying_migrations
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@plugin.write "db/migrate/1_create_users.rb", <<-RUBY
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class CreateUsers < ActiveRecord::Migration
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end
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RUBY
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@plugin.write "db/migrate/2_add_last_name_to_users.rb", <<-RUBY
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class AddLastNameToUsers < ActiveRecord::Migration
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end
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RUBY
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app_file "db/migrate/1_create_sessions.rb", <<-RUBY
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class CreateSessions < ActiveRecord::Migration
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end
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RUBY
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yaffle = plugin "acts_as_yaffle", "::LEVEL = config.log_level" do |plugin|
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plugin.write "lib/acts_as_yaffle.rb", "class ActsAsYaffle; end"
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end
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yaffle.write "db/migrate/1_create_yaffles.rb", <<-RUBY
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class CreateYaffles < ActiveRecord::Migration
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end
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RUBY
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add_to_config "ActiveRecord::Base.timestamped_migrations = false"
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Dir.chdir(app_path) do
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output = `rake db:copy_migrations FROM=bukkits`
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assert File.exists?("#{app_path}/db/migrate/2_create_users.bukkits.rb")
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assert File.exists?("#{app_path}/db/migrate/3_add_last_name_to_users.bukkits.rb")
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assert_match /2_create_users/, output
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assert_match /3_add_last_name_to_users/, output
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assert_equal 3, Dir["#{app_path}/db/migrate/*.rb"].length
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output = `rake db:copy_migrations`
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assert File.exists?("#{app_path}/db/migrate/4_create_yaffles.acts_as_yaffle.rb")
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assert_match /4_create_yaffles/, output
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migrations_count = Dir["#{app_path}/db/migrate/*.rb"].length
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output = `rake db:copy_migrations`
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assert_equal migrations_count, Dir["#{app_path}/db/migrate/*.rb"].length
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assert_match /No migrations were copied/, output
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end
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end
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def test_puts_its_lib_directory_on_load_path
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boot_rails
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require "another"
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