topic pass bbox parameters in Web AppBuilder Custom Widgets Questions

pass bbox parameters

rajujee — Tue, 05 Jun 2018 01:59:17 GMT

Good day all,

I am new to web app builder widget... I require to create a widget that pass location bbox to a server. How can I complete this on widget load. Any sample code or JS API link will be great.

Thanks in advance for your assistance.

Re: pass bbox parameters

RobertScheitlin__GISP — Tue, 05 Jun 2018 13:00:00 GMT

Raju,

Passing a map extent back to the server would require a web service or something that can accept the extent. So what do you have on the server that is expecting the extent?

Re: pass bbox parameters

rajujee — Tue, 05 Jun 2018 15:27:07 GMT

Thanks Rob for your response. I already have a web service setup that expect current application map extent. I am looking a function in JS 4.x that send current application location(lat, long) or bbox. how to get zoom level. Please see example below and advise. Thanks in advance

Set and use extents in a map | Guide | ArcGIS API for JavaScript 3.24

function init(){
var myMap = new Map("mapDiv");

var mapServiceURL = "https://server.arcgisonline.com/ArcGIS/rest/services/ESRI_StreetMap_World_2D/MapServer";
myMap.addLayer(new ArcGISTiledMapServiceLayer(mapServiceURL));
myMap.addLayer(mapServiceURL);

myMap.on("extent-change", showExtent);
}

function showExtent(ext){
var extentString = "";
extentString = "XMin: " + ext.xmin +
" YMin: " + ext.ymin +
" XMax: " + ext.xmax +
" YMax: " + ext.ymax;
document.getElementById("onExtentChangeInfo").innerHTML = extentString;

Re: pass bbox parameters

RobertScheitlin__GISP — Sun, 12 Dec 2021 10:58:49 GMT

Raju,

So if your web service is a RESTful web service you would use esriRequest to send the data.

var requestHandler = esriRequest(yourServiceURL,{
  content: {
    yourParmeter: extentString
  },
  responseType: "json"
});‍‍‍‍‍‍