MagLev Database Explorer is a Rails application that allow you to view and modify objects persisted in MagLev/GemStone and to debug Rails applications. MagLev Database Explorer is a Rails Engine that can be integrated in your Rails application.

http://www.youtube.com/watch?v=27mS1BNP7wQ

You can use MagLev Database Explorer as a Rails Engine or as a stand-alone application, in order to use together with non-Rails application.

Download the Gem source code, build the Gem and install it. Alternatively, install the Gem from Rubygems.

gem install maglev-database-explorer

Add the Gem the Gemfile of your Rails application.

Add a route to your Rails application. You can currently not change the name of the route.

Rails.application.routes.draw do
  mount MaglevDatabaseExplorer::Engine => "/maglev-database-explorer"
end

Run your application.

rails server

You can access MagLev Database Explorer at this URL: http://hostname:3001/maglev-database-explorer/

Note: MagLev Database Explorer spawns a second web server for debugging purposes. The port number is always the default port incremented by one.

Install the Gem and run maglev-database-explorer on your console.

You can debug Rails application by executing the following statement in your application code.

MaglevDatabaseExplorer.halt

There are currently no automatic Rails exception handlers that automatically spawn a debug session for Rails expcetions.

Explore and modify objects in your Rails application running on MagLev.