I was looking for a way to get a collection of every model using the Rails console. Here are a few simple ways to do it.

Step 0

If you do not have Ruby on Rails installed, please read this tutorial

Step 1

Run Rails Console.

rails c

Raw list of tables

ActiveRecord::Base.connection.tables

Clean list of names

ApplicationRecord.descendants.collect { |type| type.name }

If you are in development mode, you might need to add this first.

Rails.application.eager_load!

Clean list of names. This is my favorite.

ActiveRecord::Base.descendants.map {|type| puts type}

Detailed list of models with parameters.

ActiveRecord::Base.connection.tables.map{|x|x.classify.safe_constantize}.compact