Forum | Appery.io

This My DB

my service and mapping:

result:

Uncaught TypeError: Cannot read property 'length' of undefined!.
Stuck!
anybody can help.

Hi Romo.

In code you have an error.

Replace line of code:

pre
code

var coordsArray = obj.coordinate;

/code
/pre

With following line of code:

pre
code

var coordsArray = data;

/code
/pre

See details on screen shot: http://prntscr.com/3iqjn0/direct

Regards.

Dear Yurii.

Many thanx.

Done!

hi all,
i just wanna ask for line : var coordsArray = obj.coordinate;
for what that line ? and could you explain that ?
im so sorry, i'm newbie here

its done

ok this solved this same issue for me. it works! thanks Katya

only question : whats the difference between using
Appery("map_name").gmap
and this :
var map = Appery("googlemap_1").options.mapElement.gmap('get', 'map');
I used the first option to place markers. the second is Yuri's code i dopnt understand the difference.

s

why can't i use this line with a database Geopoint?
'pin_place' contains a Geopoint mapped from a database.

var markerLatLng = new google.maps.LatLng(localStorage.getItem('pin_place'));

i need to use a seperate 'long' and 'lat' values and it works that way, but shouldn't it work with geopoints too?

Hi LuisMa,

1. When you store object to LSV you need store there JSON string.

   So click "Add js" and populate JS editor with following code: http://prntscr.com/4l0ji2/direct

   pre

   return = JSON.stringify(value);

   /pre

   2 Then when you need to use this object you can parse this string(stored in LSV) to origin JS object. Here is code:

   pre

   var jsonString = localStorage.getItem('pin_place');

   var originObject = JSON.parse(jsonString);

   //here you can access origin object in accordance to your needs:
   console.log("first item = " + originObject[0]);
   console.log("second item = " + originObject[1]);

   /pre

   Regards.

ok thank you, that makes sense.
but tried it , and it seems the Object never gets anything data from the LSV. I've attached an SS with :
-the DB showing the Geopoints,
-the console output
-the expressions watch
-and the code i inserted

also, I added this JS to the 'pin_place' mapping: "return JSON.stringify(value);"

so, supposing this code is correct, I would still need to do this :

codenew google.maps.LatLng(originObject[0],originObject[1]);/code

Instead of just:

codenew google.maps.LatLng( originObject);/code

right?

not much use for a geopoint i seems. do you recomend this approach then ? so far it has worked for me :

codevar markerLatLng=new google.maps.LatLng(

localStorage.getItem('lon') , localStorage.getItem('lat')

); /code

Hi LuisMa,

Here is code i've gave you:

pre

var jsonString = localStorage.getItem('pin_place');
var originObject = JSON.parse(jsonString);
//here you can access origin object in accordance to your needs:
console.log("first item = " + originObject[0]);
console.log("second item = " + originObject[1]);

/pre

So here is some debug code that's print information into browser console.
Could you be pleased to take a look into this console and find what this code logs?

There should be something like:

"rirst item = 45.2123"
"second item = 12.234"

pre

so, supposing this code is correct, I would still need to do this :

new google.maps.LatLng(originObject[0],originObject[1]);

/pre

Yes - it seem to be correct code. But you need to check whether you have correct values debug code.

Regards.