topic How: Change the target Web Map in the JSON of a Web App? in ArcGIS Web AppBuilder Questions

How: Change the target Web Map in the JSON of a Web App?

RVx_GaslineGiS — Thu, 19 Nov 2020 22:38:24 GMT

I needed to make changes to the JSON of an existing web map that is part of a web app. Before replacing it, I want to test the JSON changes on a new web map.

The new web map is a near duplicate the replacement--including its data sources, published services, and the layer ID. The main difference is in the itemIDs it uses to reference several feature layers.

The Web App uses a lot of configured widgets including different Searches, Group Layers, and the eSearch widget. I don't want to have to re-do any of those. Is there an easy location within the Web App's JSON I can change to point to the new web map instead?

Re: How: Change the target Web Map in the JSON of a Web App?

LefterisKoumis — Thu, 19 Nov 2020 22:44:08 GMT

You can define the new web map id by changing it in the app config.json file. Look for the itemId value found under the map object.

"map": {

"3D": false,

"2D": true,

"position": {

"left": 0,

"top": 40,

"right": 0,

"bottom": 0

"itemId": "<your map id>",

"mapOptions": {

"extent": {

"xmin": -14304987.782245828,

"ymin": 3965994.21067048,

"xmax": -12185541.861955022,

"ymax": 5115607.116079226,

"spatialReference": {

"wkid": 102100

}

Re: How: Change the target Web Map in the JSON of a Web App?

RVx_GaslineGiS — Thu, 19 Nov 2020 22:46:29 GMT

Thank you! I had been searching for where the map's itemID was but just couldn't locate it.

In retrospect, I suppose I could have used ctrl+f to and searched for the map's item id...