Update value table based on selection in multivalue value list - Python Toolbox

CristinaBalmus — Tue, 21 Jul 2015 06:48:52 GMT

Hi,

I need a value list which allows the user to select multiple values. Based on this selection, I need to update the first column of a value table with 2 columns. The second column is meant for the user to input values. I am trying this in a Python toolbox.

My code looks something like that at this point:

import arcpy 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""" param0 = arcpy.Parameter( displayName = "Select Fruit", name = "Fruit_selection", datatype = "GPString", parameterType = "Required", direction = "Input", multiValue=True) param0.filter.type = "ValueList" param0.filter.list = ["Apple","Pear","Peach"] param1 = arcpy.Parameter( displayName = "Selection", name = "Value_table", datatype = "GPValueTable", parameterType = "Required", direction = "Input") param1.columns =([["String", "Fruit_name"], ["Long","Fruit_price"]]) params = [param0,param1] return params 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.""" vtab = [] if str(parameters[0].value) == ["Apple"]: vtab.append(["Jonathan",2500]) vtab.append(["Gold",1000]) parameters[1].values = vtab elif str(parameters[0].value) == ["Pear"]: vtab.append(["Anjou",1000]) vtab.append(["Concorde",2000]) parameters[1].values = vtab 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.""" return

Any help would be much appreciated.

Thank you!

Re: Update value table based on selection in multivalue value list - Python Toolbox

WesMiller — Tue, 21 Jul 2015 13:13:41 GMT

Try this http://blogs.esri.com/esri/arcgis/2011/08/25/generating-a-choice-list-from-a-field/

Re: Update value table based on selection in multivalue value list - Python Toolbox

CristinaBalmus — Fri, 24 Jul 2015 11:53:56 GMT

Thank you, Wes Miller! I have already seen and used the info on the page you suggested, but this is for a simple drop-down. I need it for a multivalue list.

Regards,

Re: Update value table based on selection in multivalue value list - Python Toolbox

WesMiller — Fri, 24 Jul 2015 13:28:35 GMT

You can set your tool box to accept multi-values and write you dependencies for the multi-values

topic Re: Update value table based on selection in multivalue value list - Python Toolbox in Python Questions

Update value table based on selection in multivalue value list - Python Toolbox

Re: Update value table based on selection in multivalue value list - Python Toolbox

Re: Update value table based on selection in multivalue value list - Python Toolbox

Re: Update value table based on selection in multivalue value list - Python Toolbox