export csv

app/admin/messages.rb

@@ -2,7 +2,8 @@ ActiveAdmin.register Message do
   csv do
     column :title
     column(:email)
-    column('bODY', humanize_name: false) # preserve case
+    column(:phone)
+    column(:description)# preserve case
   end
   # See permitted parameters documentation:
   # https://github.com/activeadmin/activeadmin/blob/master/docs/2-resource-customization.md#setting-up-strong-parameters