How to add field to [GEODATABASE_FILE]

Hi @mikesando . We usually recommend using your ArcGIS client to first add the required fields to an existing feature class and then writing with FME. However, you could use a PythonCaller before the writer to call in Esri's arcpy module and take advantage of the arcpy.AddField_management geoprocessing tool. You would need to make sure that your python interpreter in FME is set to use the interpreter installed by ArcGIS (https://knowledge.safe.com/content/kbentry/814/choosing-a-different-python-interpreter-installati.html).

A simple example of what might appear in the PythonCaller might look something like the following:

# Import Esri's arcpy module

 

import arcpy

 

 

def processFeature(feature):

 

# The location of the destination geodatabase and feature class you want to add a filed to.

 

feat_class = 'C:\\Temp\\MyGDB.gdb\\MyFeatureClass'

 

 

# Use arcpy Add Field geoprocessing tool to add a new Text field called "new_field" to the

 

# destination feature class.

 

arcpy.AddField_management(feat_class, "new_field", "TEXT")