Routing.rb help please

I have the following URL the dist lat lng all can have a decimal
point in them… I saw a really old post that suggested to use the
map with a requirements list like in the rout statement. Well it
doesn;t parse it correctly… anyone care to correct the regex?
this script returns a json object so google maps can put entries on
the map… ‘/search/:type/:dist/:lat/:lng’, :controller =>
‘search’, :action => ‘search’,
:requirements => { :lat
=> /./ ,:lng => /./,:dist => /.*/ }