draw ER Diagrams for models

Hi

I would like to know the relations ship between models by using er
diagrams.
How it is ??
please suggest me

Have a look at Railroad; it might do what you're after.
http://railroad.rubyforge.org/

Jetbrains RubyMine IDE can do that.

Sateesh Kambhamapati wrote:

You should also check out

Visualize Models
http://visualizemodels.rubyforge.org/#ba3e80f6c443b6cc58d7e04ff9e769df

and

Railroad
http://railroad.rubyforge.org/