<%= start_form_tag :controller => 'geocoder', :action => 'search' %> <%= text_field 'query', 'postcode'%> <%= text_field 'query', 'place_name'%> <%= submit_tag 'Search' %> <%= end_form_tag %>
eg: SW15 6JH
eg:Essen
<% lon = params['lon'] || '-0.1' %> <% lat = params['lat'] || '51.5' %> <% zoom = params['zoom'] || '4' %>