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require 'active_record'
db_namespace = namespace :db do
task :load_config do
ActiveRecord::Base.configurations = ActiveRecord::Tasks::DatabaseTasks.database_configuration || {}
ActiveRecord::Migrator.migrations_paths = ActiveRecord::Tasks::DatabaseTasks.migrations_paths
end
namespace :create do
task :all => :load_config do
ActiveRecord::Tasks::DatabaseTasks.create_all
end
end
desc 'Create the database from DATABASE_URL or config/database.yml for the current Rails.env (use db:create:all to create all databases in the config)'
task :create => [:load_config] do
if ENV['DATABASE_URL']
ActiveRecord::Tasks::DatabaseTasks.create_database_url
else
ActiveRecord::Tasks::DatabaseTasks.create_current
end
end
namespace :drop do
task :all => :load_config do
ActiveRecord::Tasks::DatabaseTasks.drop_all
end
end
desc 'Drops the database using DATABASE_URL or the current Rails.env (use db:drop:all to drop all databases)'
task :drop => [:load_config] do
if ENV['DATABASE_URL']
ActiveRecord::Tasks::DatabaseTasks.drop_database_url
else
ActiveRecord::Tasks::DatabaseTasks.drop_current
end
end
desc "Migrate the database (options: VERSION=x, VERBOSE=false, SCOPE=blog)."
task :migrate => [:environment, :load_config] do
ActiveRecord::Migration.verbose = ENV["VERBOSE"] ? ENV["VERBOSE"] == "true" : true
ActiveRecord::Migrator.migrate(ActiveRecord::Migrator.migrations_paths, ENV["VERSION"] ? ENV["VERSION"].to_i : nil) do |migration|
ENV["SCOPE"].blank? || (ENV["SCOPE"] == migration.scope)
end
db_namespace['_dump'].invoke
end
task :_dump do
case ActiveRecord::Base.schema_format
when :ruby then db_namespace["schema:dump"].invoke
when :sql then db_namespace["structure:dump"].invoke
else
raise "unknown schema format #{ActiveRecord::Base.schema_format}"
end
# Allow this task to be called as many times as required. An example is the
# migrate:redo task, which calls other two internally that depend on this one.
db_namespace['_dump'].reenable
end
namespace :migrate do
# desc 'Rollbacks the database one migration and re migrate up (options: STEP=x, VERSION=x).'
task :redo => [:environment, :load_config] do
if ENV['VERSION']
db_namespace['migrate:down'].invoke
db_namespace['migrate:up'].invoke
else
db_namespace['rollback'].invoke
db_namespace['migrate'].invoke
end
end
# desc 'Resets your database using your migrations for the current environment'
task :reset => ['db:drop', 'db:create', 'db:migrate']
# desc 'Runs the "up" for a given migration VERSION.'
task :up => [:environment, :load_config] do
version = ENV['VERSION'] ? ENV['VERSION'].to_i : nil
raise 'VERSION is required' unless version
ActiveRecord::Migrator.run(:up, ActiveRecord::Migrator.migrations_paths, version)
db_namespace['_dump'].invoke
end
# desc 'Runs the "down" for a given migration VERSION.'
task :down => [:environment, :load_config] do
version = ENV['VERSION'] ? ENV['VERSION'].to_i : nil
raise 'VERSION is required' unless version
ActiveRecord::Migrator.run(:down, ActiveRecord::Migrator.migrations_paths, version)
db_namespace['_dump'].invoke
end
desc 'Display status of migrations'
task :status => [:environment, :load_config] do
unless ActiveRecord::Base.connection.table_exists?(ActiveRecord::Migrator.schema_migrations_table_name)
puts 'Schema migrations table does not exist yet.'
next # means "return" for rake task
end
db_list = ActiveRecord::Base.connection.select_values("SELECT version FROM #{ActiveRecord::Migrator.schema_migrations_table_name}")
db_list.map! { |version| "%.3d" % version }
file_list = []
ActiveRecord::Migrator.migrations_paths.each do |path|
Dir.foreach(path) do |file|
# match "20091231235959_some_name.rb" and "001_some_name.rb" pattern
if match_data = /^(\d{3,})_(.+)\.rb$/.match(file)
status = db_list.delete(match_data[1]) ? 'up' : 'down'
file_list << [status, match_data[1], match_data[2].humanize]
end
end
end
db_list.map! do |version|
['up', version, '********** NO FILE **********']
end
# output
puts "\ndatabase: #{ActiveRecord::Base.connection_config[:database]}\n\n"
puts "#{'Status'.center(8)} #{'Migration ID'.ljust(14)} Migration Name"
puts "-" * 50
(db_list + file_list).sort_by {|migration| migration[1]}.each do |migration|
puts "#{migration[0].center(8)} #{migration[1].ljust(14)} #{migration[2]}"
end
puts
end
end
desc 'Rolls the schema back to the previous version (specify steps w/ STEP=n).'
task :rollback => [:environment, :load_config] do
step = ENV['STEP'] ? ENV['STEP'].to_i : 1
ActiveRecord::Migrator.rollback(ActiveRecord::Migrator.migrations_paths, step)
db_namespace['_dump'].invoke
end
# desc 'Pushes the schema to the next version (specify steps w/ STEP=n).'
task :forward => [:environment, :load_config] do
step = ENV['STEP'] ? ENV['STEP'].to_i : 1
ActiveRecord::Migrator.forward(ActiveRecord::Migrator.migrations_paths, step)
db_namespace['_dump'].invoke
end
# desc 'Drops and recreates the database from db/schema.rb for the current environment and loads the seeds.'
task :reset => [:environment, :load_config] do
db_namespace["drop"].invoke
db_namespace["setup"].invoke
end
# desc "Retrieves the charset for the current environment's database"
task :charset => [:environment, :load_config] do
puts ActiveRecord::Tasks::DatabaseTasks.charset_current
end
# desc "Retrieves the collation for the current environment's database"
task :collation => [:environment, :load_config] do
begin
puts ActiveRecord::Tasks::DatabaseTasks.collation_current
rescue NoMethodError
$stderr.puts 'Sorry, your database adapter is not supported yet. Feel free to submit a patch.'
end
end
desc 'Retrieves the current schema version number'
task :version => [:environment, :load_config] do
puts "Current version: #{ActiveRecord::Migrator.current_version}"
end
# desc "Raises an error if there are pending migrations"
task :abort_if_pending_migrations => :environment do
pending_migrations = ActiveRecord::Migrator.open(ActiveRecord::Migrator.migrations_paths).pending_migrations
if pending_migrations.any?
puts "You have #{pending_migrations.size} pending #{pending_migrations.size > 1 ? 'migrations:' : 'migration:'}"
pending_migrations.each do |pending_migration|
puts ' %4d %s' % [pending_migration.version, pending_migration.name]
end
abort %{Run `rake db:migrate` to update your database then try again.}
end
end
desc 'Create the database, load the schema, and initialize with the seed data (use db:reset to also drop the database first)'
task :setup => ['db:schema:load_if_ruby', 'db:structure:load_if_sql', :seed]
desc 'Load the seed data from db/seeds.rb'
task :seed do
db_namespace['abort_if_pending_migrations'].invoke
ActiveRecord::Tasks::DatabaseTasks.load_seed
end
namespace :fixtures do
desc "Load fixtures into the current environment's database. Load specific fixtures using FIXTURES=x,y. Load from subdirectory in test/fixtures using FIXTURES_DIR=z. Specify an alternative path (eg. spec/fixtures) using FIXTURES_PATH=spec/fixtures."
task :load => [:environment, :load_config] do
require 'active_record/fixtures'
base_dir = if ENV['FIXTURES_PATH']
STDERR.puts "Using FIXTURES_PATH env variable is deprecated, please use " +
"ActiveRecord::Tasks::DatabaseTasks.fixtures_path = '/path/to/fixtures' " +
"instead."
File.join [Rails.root, ENV['FIXTURES_PATH'] || %w{test fixtures}].flatten
else
ActiveRecord::Tasks::DatabaseTasks.fixtures_path
end
fixtures_dir = File.join [base_dir, ENV['FIXTURES_DIR']].compact
(ENV['FIXTURES'] ? ENV['FIXTURES'].split(/,/) : Dir["#{fixtures_dir}/**/*.yml"].map {|f| f[(fixtures_dir.size + 1)..-5] }).each do |fixture_file|
ActiveRecord::FixtureSet.create_fixtures(fixtures_dir, fixture_file)
end
end
# desc "Search for a fixture given a LABEL or ID. Specify an alternative path (eg. spec/fixtures) using FIXTURES_PATH=spec/fixtures."
task :identify => [:environment, :load_config] do
require 'active_record/fixtures'
label, id = ENV['LABEL'], ENV['ID']
raise 'LABEL or ID required' if label.blank? && id.blank?
puts %Q(The fixture ID for "#{label}" is #{ActiveRecord::FixtureSet.identify(label)}.) if label
base_dir = if ENV['FIXTURES_PATH']
STDERR.puts "Using FIXTURES_PATH env variable is deprecated, please use " +
"ActiveRecord::Tasks::DatabaseTasks.fixtures_path = '/path/to/fixtures' " +
"instead."
File.join [Rails.root, ENV['FIXTURES_PATH'] || %w{test fixtures}].flatten
else
ActiveRecord::Tasks::DatabaseTasks.fixtures_path
end
Dir["#{base_dir}/**/*.yml"].each do |file|
if data = YAML::load(ERB.new(IO.read(file)).result)
data.keys.each do |key|
key_id = ActiveRecord::FixtureSet.identify(key)
if key == label || key_id == id.to_i
puts "#{file}: #{key} (#{key_id})"
end
end
end
end
end
end
namespace :schema do
desc 'Create a db/schema.rb file that is portable against any DB supported by AR'
task :dump => [:environment, :load_config] do
require 'active_record/schema_dumper'
filename = ENV['SCHEMA'] || File.join(ActiveRecord::Tasks::DatabaseTasks.db_dir, 'schema.rb')
File.open(filename, "w:utf-8") do |file|
ActiveRecord::SchemaDumper.dump(ActiveRecord::Base.connection, file)
end
db_namespace['schema:dump'].reenable
end
desc 'Load a schema.rb file into the database'
task :load => [:environment, :load_config] do
file = ENV['SCHEMA'] || File.join(ActiveRecord::Tasks::DatabaseTasks.db_dir, 'schema.rb')
ActiveRecord::Tasks::DatabaseTasks.check_schema_file(file)
load(file)
end
task :load_if_ruby => ['db:create', :environment] do
db_namespace["schema:load"].invoke if ActiveRecord::Base.schema_format == :ruby
end
namespace :cache do
desc 'Create a db/schema_cache.dump file.'
task :dump => [:environment, :load_config] do
con = ActiveRecord::Base.connection
filename = File.join(ActiveRecord::Tasks::DatabaseTasks.db_dir, "schema_cache.dump")
con.schema_cache.clear!
con.tables.each { |table| con.schema_cache.add(table) }
open(filename, 'wb') { |f| f.write(Marshal.dump(con.schema_cache)) }
end
desc 'Clear a db/schema_cache.dump file.'
task :clear => [:environment, :load_config] do
filename = File.join(ActiveRecord::Tasks::DatabaseTasks.db_dir, "schema_cache.dump")
FileUtils.rm(filename) if File.exists?(filename)
end
end
end
namespace :structure do
desc 'Dump the database structure to db/structure.sql. Specify another file with DB_STRUCTURE=db/my_structure.sql'
task :dump => [:environment, :load_config] do
filename = ENV['DB_STRUCTURE'] || File.join(ActiveRecord::Tasks::DatabaseTasks.db_dir, "structure.sql")
current_config = ActiveRecord::Tasks::DatabaseTasks.current_config
ActiveRecord::Tasks::DatabaseTasks.structure_dump(current_config, filename)
if ActiveRecord::Base.connection.supports_migrations?
File.open(filename, "a") do |f|
f.puts ActiveRecord::Base.connection.dump_schema_information
f.print "\n"
end
end
db_namespace['structure:dump'].reenable
end
# desc "Recreate the databases from the structure.sql file"
task :load => [:environment, :load_config] do
filename = ENV['DB_STRUCTURE'] || File.join(ActiveRecord::Tasks::DatabaseTasks.db_dir, "structure.sql")
ActiveRecord::Tasks::DatabaseTasks.check_schema_file(filename)
current_config = ActiveRecord::Tasks::DatabaseTasks.current_config
ActiveRecord::Tasks::DatabaseTasks.structure_load(current_config, filename)
end
task :load_if_sql => ['db:create', :environment] do
db_namespace["structure:load"].invoke if ActiveRecord::Base.schema_format == :sql
end
end
namespace :test do
# desc "Recreate the test database from the current schema"
task :load => 'db:test:purge' do
case ActiveRecord::Base.schema_format
when :ruby
db_namespace["test:load_schema"].invoke
when :sql
db_namespace["test:load_structure"].invoke
end
end
# desc "Recreate the test database from an existent schema.rb file"
task :load_schema => 'db:test:purge' do
begin
should_reconnect = ActiveRecord::Base.connection_pool.active_connection?
ActiveRecord::Base.establish_connection(ActiveRecord::Base.configurations['test'])
ActiveRecord::Schema.verbose = false
db_namespace["schema:load"].invoke
ensure
if should_reconnect
ActiveRecord::Base.establish_connection(ActiveRecord::Base.configurations[ActiveRecord::Tasks::DatabaseTasks.env])
end
end
end
# desc "Recreate the test database from an existent structure.sql file"
task :load_structure => 'db:test:purge' do
begin
ActiveRecord::Tasks::DatabaseTasks.current_config(:config => ActiveRecord::Base.configurations['test'])
db_namespace["structure:load"].invoke
ensure
ActiveRecord::Tasks::DatabaseTasks.current_config(:config => nil)
end
end
# desc "Recreate the test database from a fresh schema"
task :clone do
case ActiveRecord::Base.schema_format
when :ruby
db_namespace["test:clone_schema"].invoke
when :sql
db_namespace["test:clone_structure"].invoke
end
end
# desc "Recreate the test database from a fresh schema.rb file"
task :clone_schema => ["db:schema:dump", "db:test:load_schema"]
# desc "Recreate the test database from a fresh structure.sql file"
task :clone_structure => [ "db:structure:dump", "db:test:load_structure" ]
# desc "Empty the test database"
task :purge => [:environment, :load_config] do
ActiveRecord::Tasks::DatabaseTasks.purge ActiveRecord::Base.configurations['test']
end
# desc 'Check for pending migrations and load the test schema'
task :prepare => :load_config do
unless ActiveRecord::Base.configurations.blank?
db_namespace['test:load'].invoke
end
end
end
end
namespace :railties do
namespace :install do
# desc "Copies missing migrations from Railties (e.g. engines). You can specify Railties to use with FROM=railtie1,railtie2"
task :migrations => :'db:load_config' do
to_load = ENV['FROM'].blank? ? :all : ENV['FROM'].split(",").map {|n| n.strip }
railties = {}
Rails.application.railties.each do |railtie|
next unless to_load == :all || to_load.include?(railtie.railtie_name)
if railtie.respond_to?(:paths) && (path = railtie.paths['db/migrate'].first)
railties[railtie.railtie_name] = path
end
end
on_skip = Proc.new do |name, migration|
puts "NOTE: Migration #{migration.basename} from #{name} has been skipped. Migration with the same name already exists."
end
on_copy = Proc.new do |name, migration|
puts "Copied migration #{migration.basename} from #{name}"
end
ActiveRecord::Migration.copy(ActiveRecord::Migrator.migrations_paths.first, railties,
:on_skip => on_skip, :on_copy => on_copy)
end
end
end
task 'test:prepare' => ['db:test:prepare', 'db:test:load', 'db:abort_if_pending_migrations']
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