We previously saw how to configure the CatalogController using the Blacklight config DSL. These configuration patterns work for many different scenarios. However, you may want to provide different a different configuration based on dynamic conditions, such as the route being visited, or the status of a user.
Using Ruby on Rails before_action as a block in the catalog_controller.rb can enable you to add these customizations.
# app/controllers/catalog_controller.rb
class CatalogController < ApplicationController
include Blacklight::Catalog
include Blacklight::Marc::Catalog
before_action do
if current_user&.admin?
blacklight_config.add_facet_field :admin_only_facet
end
end
configure_blacklight do |config|