Using roll your own authentication with the rails_admin gem

问题

How do you implement authentication with the rails_admin gem when you are not using devise e.g. you have rolled your own authentication?

回答1:

In config/initializers/rails_admin.rb include a config.authenticate_with block and place your authentication logic there. It should raise an exception if the user is not authorised to use rails_admin. Here is a simple example:

RailsAdmin.config do |config|
  config.authenticate_with do
    raise 'You must be admin' unless signed_in? && current_user.admin?
  end
end

If you want to follow the rails_admin instructions for the cancancan gem then also add the following config line:

config.current_user_method(&:current_user)

来源：https://stackoverflow.com/questions/38966731/using-roll-your-own-authentication-with-the-rails-admin-gem