ref: master
plugins/exchange/views/exchange_plugin_myprofile/_proposal_add_unreg_item.html.erb
<%= link_to_remote _('Add not registered product'), {url: {
controller: :exchange_plugin_element, action: :create, actor: actor, element: {proposal_id: proposal.id, object_type: "ExchangePlugin::UnregisteredItem", profile_id: profile.id}}},
class: 'action-button exchange-add-unreg-item' %>