Refactor conditional to OO

lib/administrate/field/base.rb

@@ -17,7 +17,7 @@ def self.associative?
       end
 
       def self.eager_load?
-        self <= BelongsTo || self <= HasOne
+        false
       end
 
       def self.searchable?

lib/administrate/field/belongs_to.rb

@@ -13,6 +13,10 @@ def self.permitted_attribute(attr, options = {})
         end
       end
 
+      def self.eager_load?
+        true
+      end
+
       def permitted_attribute
         foreign_key
       end

lib/administrate/field/has_one.rb

@@ -26,6 +26,10 @@ def self.permitted_attribute(attr, options = {})
         { "#{attr}_attributes": related_dashboard_attributes }
       end
 
+      def self.eager_load?
+        true
+      end
+
       def nested_form
         @nested_form ||= Administrate::Page::Form.new(
           resolver.dashboard_class.new,