Mass assignments protection

:attr_accessible and :attr_protected are taken into account: restricted fields are not editable (read_only). If you whitelist attributes, don't forget to whitelist accessible associations' 'id' methods as well : division_id, player_ids, commentable_type, commentable_id, etc.

:attr_accessible specifies a list of accessible methods for mass-assignment in your ActiveModel models. By default, RailsAdmin uses role :default (default in ActiveModel).

If the role you specify isn't used in your whitelist declarations, you'll free access to all attributes. Keep in mind that 'key' != :key

You can change role with a block evaluated in the context of the controller (you'll have access to your current_user):

RailsAdmin.config do |config|
  config.attr_accessible_role do
    _current_user.roles.first
  end
end

If you don't want read_only fields to be visible in your forms:

RailsAdmin.config do |config|
  config.models do
    edit do
      fields do
        visible do
          visible && !read_only
        end
      end
    end
  end
end

Another example:

attr_accessible :email, :password, :password_confirmation, :username, :full_name, :as => [:default, :admin]
attr_accessible :is_admin, as: :admin

rails_admin initializer:

config.attr_accessible_role { :admin }