I am trying to remove a set of layers from a web map and add them back later. Since the layers consist of a mix of feature services and image services, I feel the easiest way to do this would be by manipulation the json of the web map. When I use AGOL assisstant, I am able to achieve the above, however when I try to do the same using ArcGIS Python API, it does not work.
I am using the code below to achieve the above, though post executing the update command I get 'True', the layers are not removed from the web map. I have also attached screenshot for reference
web_map = source.content.get(itemid) data = web_map.get_data() rem_j =  for i in data['operationalLayers']: if i['url'].find('mygishub') == -1: rem_j.append(i) data['operationalLayers'].remove(i) web_map.update(item_properties=data)
I have also tried to achieve the same by using the WebMap object, but it still does not work. Have attached screenshot and code for reference.
web_map = source.content.get(itemid) web_map_obj = WebMap(web_map) rem_j =  for i in web_map_obj.layers: if i['url'].find('mygishub') == -1: rem_j.append(i) web_map_obj.layers.remove(i) web_map_obj.update()
Note: I have not used the add_layer and remove_layer methods here. I am aware that the remove layer method accepts a layer object (i.e., webmap.layers[id]), this approach works for removing layers but when it comes to adding a mixture of feature services and image services as layers using their urls, I have to find the type of service and then create a FeatureLayer or ImageryLayer object accordingly for each url and finally add them to the webmap, which I feel is not very efficient as I have a large number of layers.
Maybe the right methode it is remove_layer().
Otherwise, when I want update webmap properties with python, I work on json.
Eg. I use this code :
where new_data is my webmap properties json with new properties.
If it's OK, this request return TRUE.
You can find more informations here : https://developers.arcgis.com/python/sample-notebooks/using-and-updating-gis-content/