example of places search in coffeescript

gistfile1.txt

# Place all the behaviors and hooks related to the matching controller here.
# All this logic will automatically be available in application.js.
# You can use CoffeeScript in this file: http://jashkenas.github.com/coffee-script/

$ ->
  if $('#google_map').length > 0
    #places search map and autocomplete
    map_el = document.getElementById 'google_map'
    search_el = document.getElementById 'places_search'
    center = new google.maps.LatLng(33.958453, -83.375614)

    #prevent submits on enter
    $(search_el).keydown (e) -> e.keyCode != 13

    map_options =
        center: center
        zoom: 16
        mapTypeId: google.maps.MapTypeId.ROADMAP
        scrollwheel: false
        scaleControl: false

    map = new google.maps.Map map_el, map_options
    autocomplete = new google.maps.places.Autocomplete search_el

    marker_options =
            map: map
            position: center

    marker = new google.maps.Marker marker_options

    google.maps.event.addListener autocomplete, 'place_changed', ->
            place = autocomplete.getPlace()
            map.panTo place.geometry.location
            $("#place_name").val(place.name) if place.name
            $("#place_address").val(place.formatted_address) if place.formatted_address
            $("#place_address_line_1").val(place.formatted_address.split(",")[0]) if place.formatted_address
            $("#place_city").val(place.formatted_address.split(",")[1]) if place.formatted_address
            $("#place_state").val(place.formatted_address.split(",")[2].split(' ')[1])
            $("#place_zipcode").val(place.formatted_address.split(",")[2].split(' ')[2])