define per request modification of layer order and symbology using ArcPy?

deleted-user-3QvhwBivZdaR — Tue, 24 Apr 2018 12:43:55 GMT

My web app will (hopefully) use dynamic layers with symbols that are rendered dynamically, based on a user chosen attribute. So far I am doing this by defining a UniqueValueRenderer, then passing these properties to a layer with LayerDrawingOptions. My work so far is loosely based on this example.

I periodically add new layers to the map and then re-publish them with a Python script using ArcPy. As far as I know, ArcPy does not provide a way to overwrite an existing map service (please correct me if I am wrong! ) So instead, I delete, then publish, the map service from scratch.

So here is my issue: to allow dynamic symbol rendering in my map services, I need to enable per request modification of the services, which I can do in Manager for the services on that server. But, I have not found a way to do this with ArcPy. Once the map services are re-published, as of now I need to then log into Manger and manually check the 'allow modification' checkbox, and also re-register the file gdb as a dynamic workspace. I have several map services in this app that need to redner symbols dynamically.

I'd appreciate any ideas, thanks. (image below is from ArcGIS Server Manager, 'Capabilities' tab...as far as I can tell, this option is not available either when manually publishing a layer, or with ArcPy)

topic define per request modification of layer order and symbology using ArcPy? in ArcGIS Server with JavaScript API Questions

define per request modification of layer order and symbology using ArcPy?