Sort a table_for in rails activeadmin

Question

In an active admin show page, I\'ve got two panels, the first being the primary record, the second being associated info (by has_many) so show looks like this:

Answer 1

With rails 4.2, based on @idrinkpabst, I did the following:

table_for group.devices.order(
  # Support for column name with underscore
  # Support "no sort param"
  (params[:order] ? params[:order] : '').gsub('_asc', ' asc').gsub('_desc', ' desc')
), sortable: true do
  # Directly using symboles and not using sortable:
  column :presence
  column :serial_number
  column :apk_version
  column :firmware_version
end

It's a more robust version:

• allows column name with underscore
• support "no sort param"
• works with rails 4.2