diff --git a/app/controllers/rails_admin/main_controller.rb b/app/controllers/rails_admin/main_controller.rb
index 18cce99cf8..c812ee8c8a 100644
--- a/app/controllers/rails_admin/main_controller.rb
+++ b/app/controllers/rails_admin/main_controller.rb
@@ -59,7 +59,6 @@ def back_or_index
       params[:return_to].presence && params[:return_to].include?(request.host) && (params[:return_to] != request.fullpath) ? params[:return_to] : index_path
     end
 
-    # rubocop:disable Metrics/CyclomaticComplexity
     def get_sort_hash(model_config)
       abstract_model = model_config.abstract_model
       field = model_config.list.fields.detect { |f| f.name.to_s == params[:sort] }
@@ -69,22 +68,13 @@ def get_sort_hash(model_config)
       column =
         if field.nil? || field.sortable == false # use default sort, asked field does not exist or is not sortable
           "#{abstract_model.table_name}.#{model_config.list.sort_by}"
-        elsif field.sortable == true # use the given field
-          "#{abstract_model.table_name}.#{field.name}"
-        elsif (field.sortable.is_a?(String) || field.sortable.is_a?(Symbol)) && field.sortable.to_s.include?('.') # just provide sortable, don't do anything smart
-          field.sortable
-        elsif field.sortable.is_a?(Hash) # just join sortable hash, don't do anything smart
-          "#{field.sortable.keys.first}.#{field.sortable.values.first}"
-        elsif field.association? # use column on target table
-          "#{field.associated_model_config.abstract_model.table_name}.#{field.sortable}"
-        else # use described column in the field conf.
-          "#{abstract_model.table_name}.#{field.sortable}"
+        else
+          field.sort_column
         end
 
       params[:sort_reverse] ||= 'false'
       {sort: column, sort_reverse: (params[:sort_reverse] == (field&.sort_reverse&.to_s || 'true'))}
     end
-    # rubocop:enable Metrics/CyclomaticComplexity
 
     def redirect_to_on_success
       notice = I18n.t('admin.flash.successful', name: @model_config.label, action: I18n.t("admin.actions.#{@action.key}.done"))
diff --git a/lib/rails_admin/config/fields/base.rb b/lib/rails_admin/config/fields/base.rb
index d0f3edcff3..5017960139 100644
--- a/lib/rails_admin/config/fields/base.rb
+++ b/lib/rails_admin/config/fields/base.rb
@@ -60,6 +60,20 @@ def virtual?
           !virtual? || children_fields.first || false
         end
 
+        def sort_column
+          if sortable == true
+            "#{abstract_model.table_name}.#{name}"
+          elsif (sortable.is_a?(String) || sortable.is_a?(Symbol)) && sortable.to_s.include?('.') # just provide sortable, don't do anything smart
+            sortable
+          elsif sortable.is_a?(Hash) # just join sortable hash, don't do anything smart
+            "#{sortable.keys.first}.#{sortable.values.first}"
+          elsif association # use column on target table
+            "#{associated_model_config.abstract_model.table_name}.#{sortable}"
+          else # use described column in the field conf.
+            "#{abstract_model.table_name}.#{sortable}"
+          end
+        end
+
         register_instance_option :searchable do
           !virtual? || children_fields.first || false
         end