From 3ea91edd1c688fa2e5eb3f7875f716ae43212ab7 Mon Sep 17 00:00:00 2001
From: Pablo Brasero <pablo@pablobm.com>
Date: Thu, 5 Dec 2019 16:04:58 +0000
Subject: [PATCH] Document `resource_params`

---
 .../dashboard/templates/controller.rb.erb            | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/lib/generators/administrate/dashboard/templates/controller.rb.erb b/lib/generators/administrate/dashboard/templates/controller.rb.erb
index ac192f6035..cfb19fc731 100644
--- a/lib/generators/administrate/dashboard/templates/controller.rb.erb
+++ b/lib/generators/administrate/dashboard/templates/controller.rb.erb
@@ -29,6 +29,18 @@ module <%= namespace.classify %>
     #   end
     # end
 
+    # Override `resource_params` if you want to transform the submitted
+    # data before it's persisted. For example, the following would turn all
+    # empty values into nil values:
+    #
+    # def resource_params
+    #   params.require(resource_name)
+    #     .permit(dashboard_class::FORM_ATTRIBUTES)
+    #     .transform_values do |value|
+    #       value == "" ? nil : value
+    #     end
+    # end
+
     # See https://administrate-prototype.herokuapp.com/customizing_controller_actions
     # for more information
   end