我有应用程序,其中GPS信息从照片的GPS数据中提取。 当我想更新的编辑操作的位置,我想拖动标记,更换,并保存新的位置。 当我点击地图,旧标志仍然存在,所以有两个标志。 首先是旧的,第二个是新的,dragable。 我在javascript更新形式的ID,但新的位置不被保存。 当我检查数组的长度在JavaScript中,那么就什么都没有。 但如果我看到页面的源,也有几阵标志。 我缺少的东西吗?
谢谢
properites_controller.rb
def edit
@property = Property.find(params[:id])
@json = Property.find(params[:id]).to_gmaps4rails
end
def update
@property = Property.find(params[:id])
if @property.update_attributes(params[:property])
redirect_to @property, notice: 'Property was successfully updated.'
else
render action: "edit"
end
end
edit.html.erb
<%= render 'form' %>
<div id="map_canvas">
<%= gmaps("map_options" => { "zoom" => 15, "auto_adjust" => true, "auto_zoom" => false},
"markers" => {"data" => @json}) %>
</div>
<% content_for :scripts do %>
<script type="text/javascript" charset="utf-8">
var markersArray = [];
// On click, clear markers, place a new one, update coordinates in the form
Gmaps.map.callback = function() {
google.maps.event.addListener(Gmaps.map.serviceObject, 'click', function(event) {
clearOverlays();
placeMarker(event.latLng);
updateFormLocation(event.latLng);
});
};
// Update form attributes with given coordinates
function updateFormLocation(latLng) {
$('#property_latitude').val(latLng.lat());
$('#property_longitude').val(latLng.lng());
$('#property_gmaps_zoom').val(Gmaps.map.serviceObject.getZoom());
}
// Add a marker with an open infowindow
function placeMarker(latLng) {
var marker = new google.maps.Marker({
position: latLng,
map: Gmaps.map.serviceObject,
draggable: true
});
markersArray.push(marker);
// Set and open infowindow
var infowindow = new google.maps.InfoWindow({
content: '<div class="popup"><h2>Awesome!</h2><p>Drag me and adjust the zoom level.</p>'
});
infowindow.open(Gmaps.map.serviceObject,marker);
// Listen to drag & drop
google.maps.event.addListener(marker, 'dragend', function() {
updateFormLocation(this.getPosition());
});
}
// Removes the overlays from the map
function clearOverlays() {
if (markersArray) {
for (var i = 0; i < markersArray.length; i++ ) {
markersArray[i].serviceObject.setMap(null);
//markersArray[i].setMap(null);
}
}
markersArray.length = 0;
}
</script><% end %>
_form.html.erb
<%= simple_form_for @property, :html => {:multipart => true} do |f| %>
<%= f.error_notification %>
<div class="form-inputs">
<%= f.input :name, :label => "Název", :input_html => { :class => "input-xlarge"} %>
<%= f.input :description, :label => "Popis", :input_html => { :class => "input-xlarge", :rows => "6"} %><br />
<%= f.hidden_field :latitude %>
<%= f.hidden_field :longitude %>
<%= f.input :date, :label => "Datum", :as => :date %>
<%= f.file_field :photo %>
</div>
<div class="form-actions">
<%= link_to 'Zpět', properties_path, :class => 'btn' %>
<%= f.button :submit, :class => 'btn-primary' %>
</div>
<% end %>