HOW TO GENERATE ER-DIAGRAMS IN RAILS 4

ER -DIAGRAMS IN RAILS4

Entity relationship diagrams are a great way to quickly visualize the structure of a Rails database & project.

In this post, we'll get up and running with the rails-erd gem which will allow us to quickly generate ERD diagrams. After that, we'll set up a rake task so that everyone on the project uses the same command to generate the diagrams. Finally, we'll show off the diagram in the readme of our Github Project!

STEP 1: Install Graphviz (Rails ERD requires Graphviz.)

$sudo apt-get install graphviz

STEP 2:Add ‘rails-erd’ gem to your existing app’s Gemfile

gem 'rails-erd'

STEP 3:Run bundle command

$bundle

STEP 4: Open your app console and run the below command.

[app path]$bundle exec rake erd filetype=pdf

[OR]

[app path]$ bundle exec rake erd filetype=dot

Now go to your application root directory, you will get there erd.pdf or erd.dot file.

@@@@@@@HAPPY RAILS CODING@@@@@@