app/models/spotlight/exhibit.rb in blacklight-spotlight-3.0.0.alpha.2 vs app/models/spotlight/exhibit.rb in blacklight-spotlight-3.0.0.alpha.3

@@ -3,10 +3,11 @@
 require 'mail'
 module Spotlight
   ##
   # Spotlight exhibit
   class Exhibit < ActiveRecord::Base
+    class_attribute :themes_selector
     include Spotlight::ExhibitAnalytics
     include Spotlight::ExhibitDefaults
     include Spotlight::ExhibitDocuments
     include Spotlight::Translatables
 
@@ -19,11 +20,11 @@
     scope :ordered_by_weight, -> { order('weight ASC') }
 
     paginates_per 48
 
     extend FriendlyId
-    friendly_id :title, use: [:slugged, :finders]
+    friendly_id :title, use: %i[slugged finders]
     validates :title, presence: true, if: -> { I18n.locale == I18n.default_locale }
     validates :slug, uniqueness: true
     validates :theme, inclusion: { in: Spotlight::Engine.config.exhibit_themes }, allow_blank: true
 
     acts_as_tagger
@@ -84,10 +85,18 @@
 
     def browse_categories?
       searches.published.any?
     end
 
+    def themes
+      @themes ||= begin
+        return Spotlight::Engine.config.exhibit_themes unless self.class.themes_selector
+
+        self.class.themes_selector.call(self)
+      end
+    end
+
     def to_s
       title
     end
 
     def import(hash)
@@ -112,10 +121,10 @@
     def searchable?
       blacklight_config.search_fields.any? { |_k, v| v.enabled && v.include_in_simple_select != false }
     end
 
     def requested_by
-      roles.first.user if roles.first
+      roles.first&.user
     end
 
     def reindex_progress
       @reindex_progress ||= ReindexProgress.new(current_reindexing_log_entry)
     end