Python Script to Set Fields to "Read Only" in ArcGIS Pro

Question

Hi everyone! I'm encountering a strange roadblock and was looking to see if anyone else has experienced this. I am trying to write a python script that will turn some of my fields to "read only" within my ArcPro project. My current script that that I have written will turn all fields to "read only" for the sake of testing. I have added a message to double check the properties of the field to confirm that it has been set to "read only." However in my current project, my fields still show as unchecked for the "read only" property. Has anyone else been able to configure a script that would allow fields to retain this setting in their project? I was thinking maybe it had something to do with saving my project? Below is a copy of my script. Any help would be greatly appreciated! import arcpy # Set variables project = arcpy.mp.ArcGISProject('CURRENT') map = project.listMaps('Map')[0] layer = arcpy.GetParameterAsText(0) desc = arcpy.Describe(layer) for field in desc.fields: field.editable = False arcpy.AddMessage(field.editable)‍‍‍‍‍‍‍‍‍‍‍

stevetaylor_perth · Answer

You can use the cim object to change the field visibility and editable properties
CIMLayerAction Class—ArcGIS Pro

import arcpy

listOfEditableFields = ['field1', 'field2']
listOfVisibleFields = ['field1', 'field2', 'field3']

def main():

arprxFile = r"<path to aprx>"

aprx = arcpy.mp.ArcGISProject(arprxFile)
maps = aprx.listMaps()
for map in maps:

for lyr in map.listLayers():

desc = arcpy.Describe(lyr)
print(lyr.name)
l_cim = lyr.getDefinition('V2')

if desc.dataElement.dataType == "FeatureClass":

featureTable = l_cim.featureTable
for fieldDesc in featureTable.fieldDescriptions:

fieldDesc.visible = False
fieldDesc.readOnly = False
for visibleFieldName in listOfVisibleFields:

if fieldDesc.fieldName == visibleFieldName:
fieldDesc.visible = True

for editableFieldName in listOfEditableFields:

if fieldDesc.fieldName == editableFieldName:
fieldDesc.readOnly = True

lyr.setDefinition(l_cim)

del aprx
print("Completed")
if __name__ == '__main__':
main()

VinceDoelman · Answer

Dear Laura,

I am running into the exact same issue. I was wondering if you've found a solution yet?

Sincerely,

Vince

danretired · Answer

My bad... I think critical things probably need to be set up during the creation phase