The document discusses reverse engineering Rails models, including the process and tools such as the rare_map and commands for generating models. It highlights advantages such as easier migration from other languages to Ruby on Rails, simplicity in model generation, and the consistency of machine-generated code. The document also outlines steps for creating databases and tables using ER diagrams.

1. Reverse Engineering
Rails Models

2. Content
• what is reverse engineering?
• Creating Rails models
• Applying reverse engineering
• how it works
• rare_map
• commands
• schegen

3. install rare gem
create rare_map.yml
Reverse Engineering
raremap
rake db:migrate
Model files will be generates
Design the DB
with ER diagram
Use DB tool to convert
ER
diagram to tables
restore database
backup file
create empty database
using DB tools

4. How it works…

5. Creating Tables in ER Diagram

6. Generation tables

7. Create Empty Database

8. Restore Database

9. Restore Database

10. Created tables

11. gem

12. configure data

13. try out
schengen

15. creates associations too…

16. Advantages
• Migrating projects from other language to ruby on rails
is much easier now.
• Using few commands we can easily generate rails
models.
• Since model code is machine generated, code will be
flawless with uniform coding standard.

17. Thank you…