namespace :db do namespace :create do desc 'Create all the local databases defined in config/database.yml' task :all => :environment 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 defined in config/database.yml for the current RAILS_ENV' task :create => :environment do create_database(ActiveRecord::Base.configurations[RAILS_ENV]) end def create_database(config) begin ActiveRecord::Base.establish_connection(config) ActiveRecord::Base.connection rescue case config['adapter'] when 'mysql' @charset = ENV['CHARSET'] || 'utf8' @collation = ENV['COLLATION'] || 'utf8_general_ci' begin ActiveRecord::Base.establish_connection(config.merge('database' => nil)) ActiveRecord::Base.connection.create_database(config['database'], :charset => (config['charset'] || @charset), :collation => (config['collation'] || @collation)) ActiveRecord::Base.establish_connection(config) rescue $stderr.puts "Couldn't create database for #{config.inspect}, charset: #{config['charset'] || @charset}, collation: #{config['collation'] || @collation} (if you set the charset manually, make sure you have a matching collation)" 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 $stderr.puts $!, *($!.backtrace) $stderr.puts "Couldn't create database for #{config.inspect}" end when 'sqlite' `sqlite "#{config['database']}"` when 'sqlite3' `sqlite3 "#{config['database']}"` 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 => :environment do ActiveRecord::Base.configurations.each_value do |config| # Skip entries that don't have a database key next unless config['database'] # Only connect to local databases local_database?(config) { drop_database(config) } end end end desc 'Drops the database for the current RAILS_ENV' task :drop => :environment do config = ActiveRecord::Base.configurations[RAILS_ENV || 'development'] begin drop_database(config) rescue Exception => e 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 puts "This task only modifies local databases. #{config['database']} is on a remote host." end end desc "Migrate the database through scripts in db/migrate. Target specific version with VERSION=x. Turn off output with VERBOSE=false." task :migrate => :environment do ActiveRecord::Migration.verbose = ENV["VERBOSE"] ? ENV["VERBOSE"] == "true" : true ActiveRecord::Migrator.migrate("db/migrate/", ENV["VERSION"] ? ENV["VERSION"].to_i : nil) Rake::Task["db:schema:dump"].invoke if ActiveRecord::Base.schema_format == :ruby end namespace :migrate do desc 'Rollbacks the database one migration and re migrate up. If you want to rollback more than one step, define STEP=x' task :redo => [ 'db:rollback', 'db:migrate' ] 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 do version = ENV["VERSION"] ? ENV["VERSION"].to_i : nil raise "VERSION is required" unless version ActiveRecord::Migrator.run(:up, "db/migrate/", version) Rake::Task["db:schema:dump"].invoke if ActiveRecord::Base.schema_format == :ruby end desc 'Runs the "down" for a given migration VERSION.' task :down => :environment do version = ENV["VERSION"] ? ENV["VERSION"].to_i : nil raise "VERSION is required" unless version ActiveRecord::Migrator.run(:down, "db/migrate/", version) Rake::Task["db:schema:dump"].invoke if ActiveRecord::Base.schema_format == :ruby end end desc 'Rolls the schema back to the previous version. Specify the number of steps with STEP=n' task :rollback => :environment do step = ENV['STEP'] ? ENV['STEP'].to_i : 1 ActiveRecord::Migrator.rollback('db/migrate/', step) Rake::Task["db:schema:dump"].invoke if ActiveRecord::Base.schema_format == :ruby end desc 'Drops and recreates the database from db/schema.rb for the current environment.' task :reset => ['db:drop', 'db:create', 'db:schema:load'] 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 else 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 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, 'db/migrate').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 namespace :fixtures do desc "Load fixtures into the current environment's database. Load specific fixtures using FIXTURES=x,y" task :load => :environment do require 'active_record/fixtures' ActiveRecord::Base.establish_connection(RAILS_ENV.to_sym) (ENV['FIXTURES'] ? ENV['FIXTURES'].split(/,/) : Dir.glob(File.join(RAILS_ROOT, 'test', 'fixtures', '*.{yml,csv}'))).each do |fixture_file| Fixtures.create_fixtures('test/fixtures', File.basename(fixture_file, '.*')) end end desc "Search for a fixture given a LABEL or ID." 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 Dir["#{RAILS_ROOT}/test/fixtures/**/*.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 => :environment do require 'active_record/schema_dumper' File.open(ENV['SCHEMA'] || "db/schema.rb", "w") do |file| ActiveRecord::SchemaDumper.dump(ActiveRecord::Base.connection, file) end end desc "Load a schema.rb file into the database" task :load => :environment do file = ENV['SCHEMA'] || "db/schema.rb" load(file) end end namespace :structure do desc "Dump the database structure to a 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("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"] search_path = "--schema=#{search_path}" if search_path `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} > db/#{RAILS_ENV}_structure.sql" else raise "Task not supported by '#{abcs["test"]["adapter"]}'" end if ActiveRecord::Base.connection.supports_migrations? File.open("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 environment's database schema" task :clone => %w(db:schema:dump db:test:purge) do ActiveRecord::Base.establish_connection(ActiveRecord::Base.configurations['test']) ActiveRecord::Schema.verbose = false Rake::Task["db:schema:load"].invoke end 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("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 db/#{RAILS_ENV}_structure.sql #{abcs["test"]["database"]}` when "sqlite", "sqlite3" dbfile = abcs["test"]["database"] || abcs["test"]["dbfile"] `#{abcs["test"]["adapter"]} #{dbfile} < 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("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 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"]) 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 'Prepare the test database and load the schema' task :prepare => %w(environment db:abort_if_pending_migrations) do if defined?(ActiveRecord) && !ActiveRecord::Base.configurations.blank? Rake::Task[{ :sql => "db:test:clone_structure", :ruby => "db:test:clone" }[ActiveRecord::Base.schema_format]].invoke end end end namespace :sessions do desc "Creates a sessions migration for use with CGI::Session::ActiveRecordStore" task :create => :environment do raise "Task unavailable to this database (no migration support)" unless ActiveRecord::Base.connection.supports_migrations? require 'rails_generator' require 'rails_generator/scripts/generate' Rails::Generator::Scripts::Generate.new.run(["session_migration", ENV["MIGRATION"] || "CreateSessions"]) end desc "Clear the sessions table" task :clear => :environment do ActiveRecord::Base.connection.execute "DELETE FROM #{session_table_name}" end end end def drop_database(config) case config['adapter'] when 'mysql' ActiveRecord::Base.connection.drop_database config['database'] when /^sqlite/ FileUtils.rm(File.join(RAILS_ROOT, config['database'])) 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::Base.pluralize_table_names ? :sessions : :session 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