db_namespace = namespace :db do task :load_config => :rails_env do require 'active_record' ActiveRecord::Base.configurations = Rails.application.config.database_configuration ActiveRecord::Migrator.migrations_paths = Rails.application.paths["db/migrate"].to_a if defined?(ENGINE_PATH) && engine = Rails::Engine.find(ENGINE_PATH) if engine.paths["db/migrate"].existent ActiveRecord::Migrator.migrations_paths += engine.paths["db/migrate"].to_a end end end namespace :create do # desc 'Create all the local databases defined in config/database.yml' task :all => :load_config do ActiveRecord::Base.configurations.each_value do |config| # Skip entries that don't have a database key, such as the first entry here: # # defaults: &defaults # adapter: mysql # username: root # password: # host: localhost # # development: # database: blog_development # <<: *defaults next unless config['database'] # Only connect to local databases local_database?(config) { create_database(config) } end end end desc 'Create the database from config/database.yml for the current Rails.env (use db:create:all to create all dbs in the config)' task :create => :load_config do # Make the test database at the same time as the development one, if it exists if Rails.env.development? && ActiveRecord::Base.configurations['test'] create_database(ActiveRecord::Base.configurations['test']) end create_database(ActiveRecord::Base.configurations[Rails.env]) end def create_database(config) begin if config['adapter'] =~ /sqlite/ if File.exist?(config['database']) $stderr.puts "#{config['database']} already exists" else begin # Create the SQLite database ActiveRecord::Base.establish_connection(config) ActiveRecord::Base.connection rescue Exception => e $stderr.puts e, *(e.backtrace) $stderr.puts "Couldn't create database for #{config.inspect}" end end return # Skip the else clause of begin/rescue else ActiveRecord::Base.establish_connection(config) ActiveRecord::Base.connection end rescue case config['adapter'] when /mysql/ @charset = ENV['CHARSET'] || 'utf8' @collation = ENV['COLLATION'] || 'utf8_unicode_ci' creation_options = {:charset => (config['charset'] || @charset), :collation => (config['collation'] || @collation)} error_class = config['adapter'] =~ /mysql2/ ? Mysql2::Error : Mysql::Error access_denied_error = 1045 begin ActiveRecord::Base.establish_connection(config.merge('database' => nil)) ActiveRecord::Base.connection.create_database(config['database'], creation_options) ActiveRecord::Base.establish_connection(config) rescue error_class => sqlerr if sqlerr.errno == access_denied_error print "#{sqlerr.error}. \nPlease provide the root password for your mysql installation\n>" root_password = $stdin.gets.strip grant_statement = "GRANT ALL PRIVILEGES ON #{config['database']}.* " \ "TO '#{config['username']}'@'localhost' " \ "IDENTIFIED BY '#{config['password']}' WITH GRANT OPTION;" ActiveRecord::Base.establish_connection(config.merge( 'database' => nil, 'username' => 'root', 'password' => root_password)) ActiveRecord::Base.connection.create_database(config['database'], creation_options) ActiveRecord::Base.connection.execute grant_statement ActiveRecord::Base.establish_connection(config) else $stderr.puts sqlerr.error $stderr.puts "Couldn't create database for #{config.inspect}, charset: #{config['charset'] || @charset}, collation: #{config['collation'] || @collation}" $stderr.puts "(if you set the charset manually, make sure you have a matching collation)" if config['charset'] end end when 'postgresql' @encoding = config['encoding'] || ENV['CHARSET'] || 'utf8' begin ActiveRecord::Base.establish_connection(config.merge('database' => 'postgres', 'schema_search_path' => 'public')) ActiveRecord::Base.connection.create_database(config['database'], config.merge('encoding' => @encoding)) ActiveRecord::Base.establish_connection(config) rescue Exception => e $stderr.puts e, *(e.backtrace) $stderr.puts "Couldn't create database for #{config.inspect}" end end else $stderr.puts "#{config['database']} already exists" end end namespace :drop do # desc 'Drops all the local databases defined in config/database.yml' task :all => :load_config do ActiveRecord::Base.configurations.each_value do |config| # Skip entries that don't have a database key next unless config['database'] begin # Only connect to local databases local_database?(config) { drop_database(config) } rescue Exception => e $stderr.puts "Couldn't drop #{config['database']} : #{e.inspect}" end end end end desc 'Drops the database for the current Rails.env (use db:drop:all to drop all databases)' task :drop => :load_config do config = ActiveRecord::Base.configurations[Rails.env || 'development'] begin drop_database(config) rescue Exception => e $stderr.puts "Couldn't drop #{config['database']} : #{e.inspect}" end end def local_database?(config, &block) if %w( 127.0.0.1 localhost ).include?(config['host']) || config['host'].blank? yield else $stderr.puts "This task only modifies local databases. #{config['database']} is on a remote host." end end desc "Migrate the database (options: VERSION=x, VERBOSE=false)." 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) db_namespace["schema:dump"].invoke if ActiveRecord::Base.schema_format == :ruby 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["schema:dump"].invoke if ActiveRecord::Base.schema_format == :ruby 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["schema:dump"].invoke if ActiveRecord::Base.schema_format == :ruby end desc "Display status of migrations" task :status => [:environment, :load_config] do config = ActiveRecord::Base.configurations[Rails.env || 'development'] ActiveRecord::Base.establish_connection(config) 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}") file_list = [] Dir.foreach(File.join(Rails.root, 'db', 'migrate')) do |file| # only files matching "20091231235959_some_name.rb" pattern if match_data = /(\d{14})_(.+)\.rb/.match(file) status = db_list.delete(match_data[1]) ? 'up' : 'down' file_list << [status, match_data[1], match_data[2]] end end # output puts "\ndatabase: #{config['database']}\n\n" puts "#{"Status".center(8)} #{"Migration ID".ljust(14)} Migration Name" puts "-" * 50 file_list.each do |file| puts "#{file[0].center(8)} #{file[1].ljust(14)} #{file[2].humanize}" end db_list.each do |version| puts "#{'up'.center(8)} #{version.ljust(14)} *** NO FILE ***" 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["schema:dump"].invoke if ActiveRecord::Base.schema_format == :ruby 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["schema:dump"].invoke if ActiveRecord::Base.schema_format == :ruby end # desc 'Drops and recreates the database from db/schema.rb for the current environment and loads the seeds.' task :reset => [ 'db:drop', 'db:setup' ] # desc "Retrieves the charset for the current environment's database" task :charset => :environment do config = ActiveRecord::Base.configurations[Rails.env || 'development'] case config['adapter'] when /mysql/ ActiveRecord::Base.establish_connection(config) puts ActiveRecord::Base.connection.charset when 'postgresql' ActiveRecord::Base.establish_connection(config) puts ActiveRecord::Base.connection.encoding when 'sqlite3' ActiveRecord::Base.establish_connection(config) puts ActiveRecord::Base.connection.encoding else $stderr.puts 'sorry, your database adapter is not supported yet, feel free to submit a patch' end end # desc "Retrieves the collation for the current environment's database" task :collation => :environment do config = ActiveRecord::Base.configurations[Rails.env || 'development'] case config['adapter'] when /mysql/ ActiveRecord::Base.establish_connection(config) puts ActiveRecord::Base.connection.collation else $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 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 if defined? ActiveRecord pending_migrations = ActiveRecord::Migrator.new(:up, ActiveRecord::Migrator.migrations_paths).pending_migrations if pending_migrations.any? puts "You have #{pending_migrations.size} pending migrations:" 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 end desc 'Create the database, load the schema, and initialize with the seed data (use db:reset to also drop the db first)' task :setup => [ 'db:create', 'db:schema:load', 'db:seed' ] desc 'Load the seed data from db/seeds.rb' task :seed => 'db:abort_if_pending_migrations' do Rails.application.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 do require 'active_record/fixtures' ActiveRecord::Base.establish_connection(Rails.env) base_dir = ENV['FIXTURES_PATH'] ? File.join(Rails.root, ENV['FIXTURES_PATH']) : File.join(Rails.root, 'test', 'fixtures') fixtures_dir = ENV['FIXTURES_DIR'] ? File.join(base_dir, ENV['FIXTURES_DIR']) : base_dir (ENV['FIXTURES'] ? ENV['FIXTURES'].split(/,/).map {|f| File.join(fixtures_dir, f) } : Dir["#{fixtures_dir}/**/*.{yml,csv}"]).each do |fixture_file| Fixtures.create_fixtures(fixtures_dir, fixture_file[(fixtures_dir.size + 1)..-5]) 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 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 #{Fixtures.identify(label)}.) if label base_dir = ENV['FIXTURES_PATH'] ? File.join(Rails.root, ENV['FIXTURES_PATH']) : File.join(Rails.root, 'test', 'fixtures') Dir["#{base_dir}/**/*.yml"].each do |file| if data = YAML::load(ERB.new(IO.read(file)).result) data.keys.each do |key| key_id = Fixtures.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 can be portably used against any DB supported by AR" task :dump => :load_config do require 'active_record/schema_dumper' File.open(ENV['SCHEMA'] || "#{Rails.root}/db/schema.rb", "w") 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 do file = ENV['SCHEMA'] || "#{Rails.root}/db/schema.rb" if File.exists?(file) load(file) else abort %{#{file} doesn't exist yet. Run "rake db:migrate" to create it then try again. If you do not intend to use a database, you should instead alter #{Rails.root}/config/application.rb to limit the frameworks that will be loaded} end end end namespace :structure do desc "Dump the database structure to an SQL file" task :dump => :environment do abcs = ActiveRecord::Base.configurations case abcs[Rails.env]["adapter"] when /mysql/, "oci", "oracle" ActiveRecord::Base.establish_connection(abcs[Rails.env]) File.open("#{Rails.root}/db/#{Rails.env}_structure.sql", "w+") { |f| f << ActiveRecord::Base.connection.structure_dump } when "postgresql" ENV['PGHOST'] = abcs[Rails.env]["host"] if abcs[Rails.env]["host"] ENV['PGPORT'] = abcs[Rails.env]["port"].to_s if abcs[Rails.env]["port"] ENV['PGPASSWORD'] = abcs[Rails.env]["password"].to_s if abcs[Rails.env]["password"] search_path = abcs[Rails.env]["schema_search_path"] unless search_path.blank? search_path = search_path.split(",").map{|search_path| "--schema=#{search_path.strip}" }.join(" ") end `pg_dump -i -U "#{abcs[Rails.env]["username"]}" -s -x -O -f db/#{Rails.env}_structure.sql #{search_path} #{abcs[Rails.env]["database"]}` raise "Error dumping database" if $?.exitstatus == 1 when "sqlite", "sqlite3" dbfile = abcs[Rails.env]["database"] || abcs[Rails.env]["dbfile"] `#{abcs[Rails.env]["adapter"]} #{dbfile} .schema > db/#{Rails.env}_structure.sql` when "sqlserver" `scptxfr /s #{abcs[Rails.env]["host"]} /d #{abcs[Rails.env]["database"]} /I /f db\\#{Rails.env}_structure.sql /q /A /r` `scptxfr /s #{abcs[Rails.env]["host"]} /d #{abcs[Rails.env]["database"]} /I /F db\ /q /A /r` when "firebird" set_firebird_env(abcs[Rails.env]) db_string = firebird_db_string(abcs[Rails.env]) sh "isql -a #{db_string} > #{Rails.root}/db/#{Rails.env}_structure.sql" else raise "Task not supported by '#{abcs[Rails.env]["adapter"]}'" end if ActiveRecord::Base.connection.supports_migrations? File.open("#{Rails.root}/db/#{Rails.env}_structure.sql", "a") { |f| f << ActiveRecord::Base.connection.dump_schema_information } end end end namespace :test do # desc "Recreate the test database from the current schema.rb" task :load => 'db:test:purge' do ActiveRecord::Base.establish_connection(ActiveRecord::Base.configurations['test']) ActiveRecord::Schema.verbose = false db_namespace["schema:load"].invoke end # desc "Recreate the test database from the current environment's database schema" task :clone => %w(db:schema:dump db:test:load) # desc "Recreate the test databases from the development structure" task :clone_structure => [ "db:structure:dump", "db:test:purge" ] do abcs = ActiveRecord::Base.configurations case abcs["test"]["adapter"] when /mysql/ ActiveRecord::Base.establish_connection(:test) ActiveRecord::Base.connection.execute('SET foreign_key_checks = 0') IO.readlines("#{Rails.root}/db/#{Rails.env}_structure.sql").join.split("\n\n").each do |table| ActiveRecord::Base.connection.execute(table) end when "postgresql" ENV['PGHOST'] = abcs["test"]["host"] if abcs["test"]["host"] ENV['PGPORT'] = abcs["test"]["port"].to_s if abcs["test"]["port"] ENV['PGPASSWORD'] = abcs["test"]["password"].to_s if abcs["test"]["password"] `psql -U "#{abcs["test"]["username"]}" -f #{Rails.root}/db/#{Rails.env}_structure.sql #{abcs["test"]["database"]} #{abcs["test"]["template"]}` when "sqlite", "sqlite3" dbfile = abcs["test"]["database"] || abcs["test"]["dbfile"] `#{abcs["test"]["adapter"]} #{dbfile} < #{Rails.root}/db/#{Rails.env}_structure.sql` when "sqlserver" `osql -E -S #{abcs["test"]["host"]} -d #{abcs["test"]["database"]} -i db\\#{Rails.env}_structure.sql` when "oci", "oracle" ActiveRecord::Base.establish_connection(:test) IO.readlines("#{Rails.root}/db/#{Rails.env}_structure.sql").join.split(";\n\n").each do |ddl| ActiveRecord::Base.connection.execute(ddl) end when "firebird" set_firebird_env(abcs["test"]) db_string = firebird_db_string(abcs["test"]) sh "isql -i #{Rails.root}/db/#{Rails.env}_structure.sql #{db_string}" else raise "Task not supported by '#{abcs["test"]["adapter"]}'" end end # desc "Empty the test database" task :purge => :environment do abcs = ActiveRecord::Base.configurations case abcs["test"]["adapter"] when /mysql/ ActiveRecord::Base.establish_connection(:test) ActiveRecord::Base.connection.recreate_database(abcs["test"]["database"], abcs["test"]) when "postgresql" ActiveRecord::Base.clear_active_connections! drop_database(abcs['test']) create_database(abcs['test']) when "sqlite","sqlite3" dbfile = abcs["test"]["database"] || abcs["test"]["dbfile"] File.delete(dbfile) if File.exist?(dbfile) when "sqlserver" dropfkscript = "#{abcs["test"]["host"]}.#{abcs["test"]["database"]}.DP1".gsub(/\\/,'-') `osql -E -S #{abcs["test"]["host"]} -d #{abcs["test"]["database"]} -i db\\#{dropfkscript}` `osql -E -S #{abcs["test"]["host"]} -d #{abcs["test"]["database"]} -i db\\#{Rails.env}_structure.sql` when "oci", "oracle" ActiveRecord::Base.establish_connection(:test) ActiveRecord::Base.connection.structure_drop.split(";\n\n").each do |ddl| ActiveRecord::Base.connection.execute(ddl) end when "firebird" ActiveRecord::Base.establish_connection(:test) ActiveRecord::Base.connection.recreate_database! else raise "Task not supported by '#{abcs["test"]["adapter"]}'" end end # desc 'Check for pending migrations and load the test schema' task :prepare => 'db:abort_if_pending_migrations' do if defined?(ActiveRecord) && !ActiveRecord::Base.configurations.blank? db_namespace[{ :sql => "test:clone_structure", :ruby => "test:load" }[ActiveRecord::Base.schema_format]].invoke end end end namespace :sessions do # desc "Creates a sessions migration for use with ActiveRecord::SessionStore" task :create => :environment do raise "Task unavailable to this database (no migration support)" unless ActiveRecord::Base.connection.supports_migrations? require 'rails/generators' Rails::Generators.configure! require 'rails/generators/rails/session_migration/session_migration_generator' Rails::Generators::SessionMigrationGenerator.start [ ENV["MIGRATION"] || "add_sessions_table" ] end # desc "Clear the sessions table" task :clear => :environment do ActiveRecord::Base.connection.execute "DELETE FROM #{session_table_name}" end end end namespace :railties do namespace :install do # desc "Copies missing migrations from Railties (e.g. plugins, 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.all 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, old_path| 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' def drop_database(config) case config['adapter'] when /mysql/ ActiveRecord::Base.establish_connection(config) ActiveRecord::Base.connection.drop_database config['database'] when /^sqlite/ require 'pathname' path = Pathname.new(config['database']) file = path.absolute? ? path.to_s : File.join(Rails.root, path) FileUtils.rm(file) when 'postgresql' ActiveRecord::Base.establish_connection(config.merge('database' => 'postgres', 'schema_search_path' => 'public')) ActiveRecord::Base.connection.drop_database config['database'] end end def session_table_name ActiveRecord::SessionStore::Session.table_name end def set_firebird_env(config) ENV["ISC_USER"] = config["username"].to_s if config["username"] ENV["ISC_PASSWORD"] = config["password"].to_s if config["password"] end def firebird_db_string(config) FireRuby::Database.db_string_for(config.symbolize_keys) end