These commands will directly draw the following to a .png file
1. Database Models
2. Mailer models
3. Observer models
4. Associations (with lines and arrows)
5. Inheritance among classes (for regular models, mailers, and observers)
As root user:
- gem install railroad
- yum install graphviz
- cd rails_app_root
- railroad -a -i -M | dot -Tpng > models.png
Be sure to run the last command as root user, otherwise you’ll get this error:
Error: Layout was not done. Missing layout plugins?
Here’s the result in png format
