topic Re: Delete Field from Feature Layer in ArcGIS API for Python Questions

Delete Field from Feature Layer

HugoBouckaert1 — Fri, 15 Mar 2019 04:31:10 GMT

I have been trying to delete a field from a feature layer. I have tried "delete_from_definition" and I get a success response, and yet the field (column) is still there afterwards:

1. I have a layer object, named updater_layer (it is definitely a feature layer object, I have checked its properties).

2. I create the JSON that defines the column:

status_remove = {
"name" : "STATUS",
"type" : "esriFieldTypeString",
"alias" : "Status",
"sqlType" : "sqlTypeOther",
"length" : 35,
"nullable" : 'true',
"editable" : 'true',
"domain" : 'null',
"defaultValue" : 'null'
}

3. I use:

updater_layer.manager.delete_from_definition(status_remove)

{'success': True}

but when I look at the properties i.e.

updater_layer.manager.properties

The STATUS field is still there.

How do I remove a field from a feature layer in ArcGIS Online using the arcgis.gis API?

Thanks

Hugo

Re: Delete Field from Feature Layer

MunachisoOgbuchiekwe — Sun, 12 Dec 2021 09:47:13 GMT

Hello Hugo,

Here is how you would delete a field from a feature layer hosted in AGOL.

import arcgis
from arcgis.gis import GIS

# Provide credentials to the GIS object.
gis = GIS(username="your username", password= "your password")

#Get the id of the hosted feature layer
item = gis.content.get("id to the feature layer")

#Get the actual feature layer
fl = item.layers[0]

#This is the JSON structure you need to pass in so that it knows what field to delete. 
# https://developers.arcgis.com/rest/services-reference/delete-from-definition-feature-layer-.htm
json = {
    "fields" : [
    {
      "name" : "POP90_SQMI"
    }
  ]
}

result = fl.manager.delete_from_definition(json)
print(result)‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

Re: Delete Field from Feature Layer

OussamaMerhi — Tue, 04 Jan 2022 22:44:20 GMT

i am sorry an still new in this. Where i can run this code. can you please tell me what to do.