so I have been looking but I can not seem to find how to populate a input field parameter that is based on the fc parameter. please note the dependence for p2.
Code:
import arcpy
class Toolbox(object):
def __init__(self):
"""Define the toolbox (the name of the toolbox is the name of the
.pyt file)."""
self.label = "Toolbox"
self.alias = ""
# List of tool classes associated with this toolbox
self.tools = [Tool]
class Tool(object):
def __init__(self):
"""Define the tool (tool name is the name of the class)."""
self.label = "Tool"
self.description = ""
self.canRunInBackground = False
def getParameterInfo(self):
"""Define parameter definitions"""
# First parameter
p1 = arcpy.Parameter(
displayName="Input Features",
name="in_features",
datatype="Feature Layer",
parameterType="Required",
direction="Input")
p2 = arcpy.Parameter(
displayName="Input Field",
name="in_field",
datatype="Field",
parameterType="Derived",
direction="Input")
p2.parameterDependencies = ????
p3 = arcpy.Parameter(
displayName="Input String",
name="in_string",
datatype="String",
parameterType="Required",
direction="Input")
return [p1, p2, p3]
def isLicensed(self):
"""Set whether tool is licensed to execute."""
return True
def updateParameters(self, parameters):
"""Modify the values and properties of parameters before internal
validation is performed. This method is called whenever a parameter
has been changed."""
return
def updateMessages(self, parameters):
"""Modify the messages created by internal validation for each tool
parameter. This method is called after internal validation."""
return
def execute(self, parameters, messages):
"""The source code of the tool."""
in_fc = parameters[0].valueAsText
in_field = parameters[1].valueAsText
in_string = parameters[2].valueAsText
rows = arcpy.UpdateCursor(in_fc)
for row in rows:
row.setValue(in_field, in_string)
rows.updateRow(row)
del row, rows
return
