1 files changed, 69 insertions, 0 deletions
diff --git a/railties/lib/rails/tasks/engine.rake b/railties/lib/rails/tasks/engine.rake
new file mode 100644
index 0000000000..2f0e7be896
--- /dev/null
+++ b/railties/lib/rails/tasks/engine.rake
@@ -0,0 +1,69 @@
+task "load_app" do
+  namespace :app do
+    load APP_RAKEFILE
+  end
+
+  if !defined?(ENGINE_PATH) || !ENGINE_PATH
+    ENGINE_PATH = find_engine_path(APP_RAKEFILE)
+  end
+end
+
+def app_task(name)
+  task name => [:load_app, "app:db:#{name}"]
+end
+
+namespace :db do
+  app_task "reset"
+
+  desc "Migrate the database (options: VERSION=x, VERBOSE=false)."
+  app_task "migrate"
+  app_task "migrate:up"
+  app_task "migrate:down"
+  app_task "migrate:redo"
+  app_task "migrate:reset"
+
+  desc "Display status of migrations"
+  app_task "migrate:status"
+
+  desc 'Create the database from config/database.yml for the current Rails.env (use db:create:all to create all dbs in the config)'
+  app_task "create"
+  app_task "create:all"
+
+  desc 'Drops the database for the current Rails.env (use db:drop:all to drop all databases)'
+  app_task "drop"
+  app_task "drop:all"
+
+  desc "Load fixtures into the current environment's database."
+  app_task "fixtures:load"
+
+  desc "Rolls the schema back to the previous version (specify steps w/ STEP=n)."
+  app_task "rollback"
+
+  desc "Create a db/schema.rb file that can be portably used against any DB supported by AR"
+  app_task "schema:dump"
+
+  desc "Load a schema.rb file into the database"
+  app_task "schema:load"
+
+  desc "Load the seed data from db/seeds.rb"
+  app_task "seed"
+
+  desc "Create the database, load the schema, and initialize with the seed data (use db:reset to also drop the db first)"
+  app_task "setup"
+
+  desc "Dump the database structure to an SQL file"
+  app_task "structure:dump"
+
+  desc "Retrieves the current schema version number"
+  app_task "version"
+end
+
+def find_engine_path(path)
+  return if path == "/"
+
+  if Rails::Engine.find(path)
+    path
+  else
+    find_engine_path(File.expand_path('..', path))
+  end
+end