How to install and uninstall ActiveAdmin in rails

1. Install Active Adminn
1.  When you install cmd it

 

rails g active_admin:install

                 Delete the asset files from js and css folders if any remain
               
                 Delete any of these lines in Routes.rb

             devise_for :admin_users, ActiveAdmin::Devise.config
             ActiveAdmin.routes(self)
             ActiveAdmin.routes(self)

Then create a new migration with:

  drop_table :active_admin_comments

You may also need:

  drop_table :admin_notes

Or rollback the migrations by finding the relevant files MoveAdminNotesToComments and CreateAdminNotes in your db/migrate folder

rake db:migrate:down VERSION=the_version_number
rake db:migrate:down VERSION=the_version_number

rake db:migrate
rails g active_admin:resource product

1. Uninstall Active Admin
1. If you run the following code it should destroy active admin:

rails destroy active_admin:install
rails destroy active_admin:resource product