topic Re: Get the WebMap from Javascript API esri/map in ArcGIS JavaScript Maps SDK Questions

Get the WebMap from Javascript API esri/map

DaveHighness — Tue, 18 Aug 2015 15:56:58 GMT

Hi, I need a good method to get the current WebMap object from the Javascript API map. I need to pass the WebMap as JSON to a GP task that will use the arcpy.ExportWebMap_server() tool to create a map image on the server. I was using a hack method I found using the Javascript API PrintTask that was working great until I switched to the latest version of the API (3.14) which I need for other reasons.

var pt = new PrintTask();

var webmap_json = pt._getPrintDefinition(this.map);

The _getPrintDefinition() is an internal method and it appears it no longer works in the latest version of the JS API (3.14). Is there another way to get the WebMap? A method like esri.map.getWebMapJson() would be nice!

Thanks

Re: Get the WebMap from Javascript API esri/map

DaveHighness — Tue, 18 Aug 2015 17:50:06 GMT

Ah, I figured it out. I need to pass the _getPrintDefinition() the map and PrintParameters objects. It would be nice if this method were public!

esri/tasks/PrintTask

Method: _getPrintDefinition(esri.Map, esri.tasks.PrintParameters)

Re: Get the WebMap from Javascript API esri/map

Cook_CountyGIS — Sat, 11 Dec 2021 14:04:36 GMT

Yes, upgrading from 3.13 to 3.17, I needed to add the PrintParameters:

.....

var params = new esri.tasks.PrintParameters();
params.map = this.map;
params.template = template;
.....
// _getPrintDefinition needed the second parameter: params
var webMapAsJSON = printTask._getPrintDefinition(this.map, params);

.....‍‍‍‍‍‍‍‍‍‍

Re: Get the WebMap from Javascript API esri/map

Arne_Gelfert — Tue, 04 Feb 2020 18:27:46 GMT

Thanks for sharing this.... just what I needed.

Re: Get the WebMap from Javascript API esri/map

NathanB — Mon, 16 Mar 2020 17:54:10 GMT

does anyone have a full code sample? i keep getting null or empty for webMapAsJSON trying it it with javascript api 4

Re: Get the WebMap from Javascript API esri/map

Anonymous User — Mon, 28 Dec 2020 17:35:41 GMT

Any luck ?