我正在尝试使用此链接http://rjshade.com/projects/gmaps-autocomplete/
中的代码实现这些地图我可以实现文本框，我确实看到城市名称，但我看不到地图，只是空白，我使用rails但我实现的代码在rails系统中有简单的html但是仍然无法让它运行
这是我的application.js
//= require jquery
//= require jquery_ujs
//= require jquery.ui.all
//= require jquery-fileupload
//= require bootstrap
//= require_tree .
这里我的gmaps.js与提供的相同
var geocoder;
var map;
var marker;
// initialise the google maps objects, and add listeners
function gmaps_init(){
// center of the universe
var latlng = new google.maps.LatLng(51.751724,-1.255284);
var options = {
zoom: 2,
center: latlng,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
// create our map object
map = new google.maps.Map(document.getElementById("gmaps-canvas"), options);
// the geocoder object allows us to do latlng lookup based on address
geocoder = new google.maps.Geocoder();
// the marker shows us the position of the latest address
marker = new google.maps.Marker({
map: map,
draggable: true
});
// event triggered when marker is dragged and dropped
google.maps.event.addListener(marker, 'dragend', function() {
geocode_lookup( 'latLng', marker.getPosition() );
});
// event triggered when map is clicked
google.maps.event.addListener(map, 'click', function(event) {
marker.setPosition(event.latLng)
geocode_lookup( 'latLng', event.latLng );
});
$('#gmaps-error').hide();
}
// move the marker to a new position, and center the map on it
function update_map( geometry ) {
map.fitBounds( geometry.viewport )
marker.setPosition( geometry.location )
}
// fill in the UI elements with new position data
function update_ui( address, latLng ) {
$('#gmaps-input-address').autocomplete("close");
$('#gmaps-input-address').val(address);
//$('#gmaps-output-latitude').html(latLng.lat());
//$('#gmaps-output-longitude').html(latLng.lng());
}
// Query the Google geocode object
//
// type: 'address' for search by address
// 'latLng' for search by latLng (reverse lookup)
//
// value: search query
//
// update: should we update the map (center map and position marker)?
function geocode_lookup( type, value, update ) {
// default value: update = false
update = typeof update !== 'undefined' ? update : false;
request = {};
request[type] = value;
geocoder.geocode(request, function(results, status) {
$('#gmaps-error').html('');
$('#gmaps-error').hide();
if (status == google.maps.GeocoderStatus.OK) {
// Google geocoding has succeeded!
if (results[0]) {
// Always update the UI elements with new location data
update_ui( results[0].formatted_address,
results[0].geometry.location )
// Only update the map (position marker and center map) if requested
if( update ) { update_map( results[0].geometry ) }
} else {
// Geocoder status ok but no results!?
$('#gmaps-error').html("Sorry, something went wrong. Try again!");
$('#gmaps-error').show();
}
} else {
// Google Geocoding has failed. Two common reasons:
// * Address not recognised (e.g. search for 'zxxzcxczxcx')
// * Location doesn't map to address (e.g. click in middle of Atlantic)
if( type == 'address' ) {
// User has typed in an address which we can't geocode to a location
$('#gmaps-error').html("Sorry! We couldn't find " + value + ". Try a different search term, or click the map." );
$('#gmaps-error').show();
} else {
// User has clicked or dragged marker to somewhere that Google can't do a reverse lookup for
// In this case we display a warning, clear the address box, but fill in LatLng
$('#gmaps-error').html("Woah... that's pretty remote! You're going to have to manually enter a place name." );
$('#gmaps-error').show();
update_ui('', value)
}
};
});
};
// initialise the jqueryUI autocomplete element
function autocomplete_init() {
$("#gmaps-input-address").autocomplete({
// source is the list of input options shown in the autocomplete dropdown.
// see documentation: http://jqueryui.com/demos/autocomplete/
source: function(request,response) {
// the geocode method takes an address or LatLng to search for
// and a callback function which should process the results into
// a format accepted by jqueryUI autocomplete
geocoder.geocode( {'address': request.term }, function(results, status) {
response($.map(results, function(item) {
return {
label: item.formatted_address, // appears in dropdown box
value: item.formatted_address, // inserted into input element when selected
geocode: item // all geocode data: used in select callback event
}
}));
})
},
// event triggered when drop-down option selected
select: function(event,ui){
update_ui( ui.item.value, ui.item.geocode.geometry.location )
update_map( ui.item.geocode.geometry )
}
});
// triggered when user presses a key in the address box
$("#gmaps-input-address").bind('keydown', function(event) {
if(event.keyCode == 13) {
geocode_lookup( 'address', $('#gmaps-input-address').val(), true );
// ensures dropdown disappears when enter is pressed
$('#gmaps-input-address').autocomplete("disable")
} else {
// re-enable if previously disabled above
$('#gmaps-input-address').autocomplete("enable")
}
});
}; // autocomplete_init
$(document).ready(function() {
if( $('#gmaps-canvas').length ) {
gmaps_init();
autocomplete_init();
};
});
Index.html.erb
<div class='gmaps'>
<div class='input-gmaps-autocomplete'>
<input id='gmaps-input-address'placeholder='Start typing a place name...' type='text' />
<div id='gmaps-error'></div>
</div>
<div id='gmaps-canvas'></div>
</div>
布局负责人
<head>
<title><%= full_title(yield(:title)) %></title>
<<%= full_meta_description(yield(:meta_description)) %> />
<<%= full_meta_keyword(yield(:meta_keyword)) %> />
<<%= full_meta_author(yield(:meta_author)) %> />
<%= stylesheet_link_tag "application", :media => "all" %>\
<script type="text/javascript"
src="https://maps.googleapis.com/maps/api/js?key={sensorize}&sensor=true">
</script>
<%= javascript_include_tag "application" %>
<%= csrf_meta_tags %>
<%= render 'layouts/shim' %>
</head>
我做错了什么？