definitively you want
def get_locations():
return response.json(locations)
and
$.getJSON instead of $.get.
which those changes what errors do you get?
On Monday, 5 September 2016 15:51:44 UTC-5, Gael Princivalle wrote:
>
> Thanks Dave.
>
> However I'm still having trouble.
>
> With that script in the view google maps API load my all locations:
> I build a Javascript object.
> var locations = [
> {{for event in events:}}
> {title: '{{=event.title}}',
> link: '{{=URL('default', 'mtb_tour',
> vars=dict(event_id=event.id))}}',
> location: {lat: {{=event.latitude}}, lng: {{=event.
> longitude}} }},
> {{pass}}
> ];
>
> What I would like to do it to update theses locations when the user change
> the map view.
> So when the map is in idle I would like to get all locations from the new
> bounds. I've not set yet the new bounds test with getBounds()as I'm still
> in trouble for getting data.
> map.addListener("idle", function(){
> hideListings();
> $.get("{{=URL('default', 'get_locations')}}", function(
> locations,status) {
> //alert("Data: " + locations + "\nStatus: " + status);
> for (var i = 0; i < locations.length; i++) {
> // Get the position from the location array.
> var position = locations[i].location;
> var title = locations[i].title;
> var link = locations[i].link;
> // Create a marker per location, and put into
> markers array.
> var marker = new google.maps.Marker({
> position: position,
> title: title,
> link: link,
> animation: google.maps.Animation.DROP,
> icon: defaultIcon,
> id: i
> });
> // Push the marker to our array of markers.
> markers.push(marker);
> // Create an onclick event to open the large
> infowindow at each marker.
> marker.addListener('click', function() {
> populateInfoWindow(this, largeInfowindow);
> });
> // Two event listeners - one for mouseover, one
> for mouseout,
> // to change the colors back and forth.
> marker.addListener('mouseover', function() {
> this.setIcon(highlightedIcon);
> });
> marker.addListener('mouseout', function() {
> this.setIcon(defaultIcon);
> });
> }
> showListings();
> });
> });
>
>
> Here is in my controller the get_locations function:
> def get_locations():
> events = db(db.events.id>0).select()
> locations= '['
> for event in events:
> locations += "{title: '" + event.title + "',"
> locations += "link: '" + URL('default', 'mtb_tour', vars=dict(
> event_id=event.id)) + "',"
> locations += "location: {lat: " + event.latitude + ", lng: " +
> event.longitude + "}},"
> locations+= ']'
> return locations
>
> Like that it return a string, and not a Javascript object.
> So the Javascript error is 'Cannot read property 'lat' of undefined'
>
> I've tried to communicate also with Json. If I've understand it's a data
> format like in Javascript.
> If I substitute in the javascript:
> $.get
> by
> $.getJson
>
> and in the controller:
> return locations
> by
> return response.json(locations)
>
> Javascript error still the same.
>
> Can someone give me a hand?
>
> Thanks.
>
> Il giorno sabato 6 agosto 2016 01:14:43 UTC+2, Dave S ha scritto:
>>
>>
>>
>> On Friday, August 5, 2016 at 2:26:51 PM UTC-7, Gael Princivalle wrote:
>>>
>>> Hello.
>>>
>>> I would like to update a javascript array by ajax, keeping the data into
>>> the db.
>>> We talk about markers data for Google maps.
>>>
>>> Here is how I load the data when the page is loaded.
>>> var locations = [
>>> {{for event in events:}}
>>> {title: '{{=event.title}}',
>>> link: '{{=URL('default', 'show_event', vars=dict(id=
>>> event.id))}}',
>>> location: {lat: {{=event.latitude}}, lng: {{=event.
>>> longitude}} }},
>>> {{pass}}
>>> ];
>>>
>>> If the user change in a form some criteria like event date or event
>>> type, I would like to update the markers dynamically, without a page reload.
>>>
>>> Can I do it by ajax?
>>>
>>> Thanks.
>>>
>>>
>> Are you trying to update the client, or update the server? In either
>> case, the answer seems to be yes. In addition to the LOAD helper, there's
>> some conversations around here about jquery. I thought I had seen a more
>> direct answer recently, but I can't put my finger on it. But have a look
>> at
>>
>> <URLhttps://groups.google.com/d/msg/web2py/m0wrV8fK4dE/7Uhw7Vs8AwAJ>
>>
>> Massimo's discussion of Collection+JSON might be helpful, too.
>> <URL:https://groups.google.com/d/msg/web2py/WN9yzLIfi6M/mFEAOySVSH4J>
>>
>> /dps
>>
>>
>>
>>
>>
>>
>
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