Active Admin is a Ruby Gem.
More accurately, it's a Rails Engine that can be injected into your existing Ruby on Rails application.
Setting up Active Admin
After installing the gem, you need to run the generator (one of the following):
rails g active_admin:install # creates the AdminUser class rails g active_admin:install User # uses an existing class rails g active_admin:install --skip-users # skips user authentication entirely
The generator adds these core files, among others:
Now, migrate your database and start the server:
rake db:migrate rails server
http://localhost:3000/admin and log in as the default user:
- User: firstname.lastname@example.org
- Password: password
Voila! You're on your brand new Active Admin dashboard.
To register an existing model with Active Admin:
rails generate active_admin:resource MyModel
This creates a file at
app/admin/my_model.rb to set up the UI; refresh your browser to see it.
When upgrading to a new version, it's a good idea to check the CHANGELOG.
To update the JS & CSS assets:
rails generate active_admin:assets
You should also sync these files with their counterparts in the AA source code:
If you use
will_paginate in your app, you need to configure an initializer for
Kaminari to avoid conflicts.
# config/initializers/kaminari.rb Kaminari.configure do |config| config.page_method_name = :per_page_kaminari end
If you're getting the error
wrong number of arguments (6 for 4..5), read #2703.