# routes
map.publish_feed_entry "feed_entries/publish/:id", :controller => "feed_entries", :action => "publish"
# rake routes
publish_feed_entry        /feed_entries/publish/:id                        {:action=>"publish", :controller=>"feed_entries"}
# view
<% @feed_entries.each do |entry| %>
<%= link_to 'Publish', publish_feed_entry(entry) %>
<% end %>

# ERROR:
undefined method `publish_feed_entry' for #<ActionView::Base:0xb6e3621c>
<%= link_to 'Publish', publish_feed_entry(entry) %>