Add edit and update actions

app/controllers/admin/local_census_records_controller.rb

@@ -16,6 +16,15 @@ class Admin::LocalCensusRecordsController < Admin::BaseController
     end
   end
 
+  def update
+    if @local_census_record.update(local_census_record_params)
+      redirect_to admin_local_census_records_path,
+        notice: t("admin.local_census_records.update.notice")
+    else
+      render :edit
+    end
+  end
+
   private
 
     def local_census_record_params