Unable to add layer to webmap in v. 2.4

TrishPeller

The unexpected deprecation of the WebMap class has broken a couple of my scripts. I have tried to follow the guidelines here (https://developers.arcgis.com/python/latest/guide/overview24/) for refactoring, but I cannot get it work. I am just trying to add a layer to a webmap.

wm_item = gis.content.get([webmap ID])
m = Map(wm_item)
fs_item = gis.content.get([feature service id])
m.content.add(fs_item)

When I do this, I get the following error:

  File "C:\Program Files\ArcGIS\Pro\bin\Python\envs\arcgispro-py3\Lib\site-packages\arcgis\gis\__init__.py", line 18855, in _hydrate
    self._refresh()
  File "C:\Program Files\ArcGIS\Pro\bin\Python\envs\arcgispro-py3\Lib\site-packages\arcgis\gis\__init__.py", line 18829, in _refresh
    raise e
  File "C:\Program Files\ArcGIS\Pro\bin\Python\envs\arcgispro-py3\Lib\site-packages\arcgis\gis\__init__.py", line 18818, in _refresh
    dictdata = self._con.post(
               ^^^^^^^^^^^^^^^
  File "C:\Program Files\ArcGIS\Pro\bin\Python\envs\arcgispro-py3\Lib\site-packages\arcgis\gis\_impl\_con\_connection.py", line 1504, in post
    return self._handle_response(
           ^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Program Files\ArcGIS\Pro\bin\Python\envs\arcgispro-py3\Lib\site-packages\arcgis\gis\_impl\_con\_connection.py", line 979, in _handle_response
    self._handle_json_error(data["error"], errorcode)
  File "C:\Program Files\ArcGIS\Pro\bin\Python\envs\arcgispro-py3\Lib\site-packages\arcgis\gis\_impl\_con\_connection.py", line 1002, in _handle_json_error
    raise Exception(errormessage)
Exception: Invalid URL
Invalid URL
(Error Code: 400)

 What am I doing wrong here?

Clubdebambos

Hi @TrishPeller 

Still getting to grips with the update myself, but here's what I know...

1. If the Feature Service contains a single Feature Layer, the single layer is added to the WebMap.
2. If the Feature Service contains multiple Feature Layers, all layers are added to the WebMap as a Group Layer.
3. If the Feature Service contains a Feature Layer(s) and a Table, the add will fail as a Table cannot be added to a Group Layer.

 

I have tested the above scenarios with the script below

 

from arcgis.gis import GIS
from arcgis.map import Map

## access agol
agol = GIS("home")

## get the WebMap item as an Item object
wm_item = agol.content.get("WM_ITEM_ID")

## create the Map object
m = Map(wm_item)

## get the feature service to add as an Item object
fs_item = agol.content.get("FS_ITEM_ID")

## add the Feature Service to the Map
m.content.add(fs_item)

## update the Map object
m.update()

 

4. You can grab an individual Feature Layer from a Feature Service and add to the WebMap.

from arcgis.gis import GIS
from arcgis.map import Map

## access agol
agol = GIS("home")

## get the WebMap item as an Item object
wm_item = agol.content.get("WM_ITEM_ID")

## create the Map object
m = Map(wm_item)

## get the feature service to add as an Item object
fs_item = agol.content.get("FS_ITEM_ID")

## get a single Feature Layer from teh Feature Service
fl = fs_item.layers[0]

## add the Feature Layer to the Map
m.content.add(fl)

## update the Map object
m.update()