Combo Box : List unique values for a field (error)

johnmarino2 — Fri, 18 Mar 2016 02:58:04 GMT

I have built an Addin that has four combo boxes and a button.

combo box 1 provides a list of layers in the TOC (working)

combo box 2 takes user text input for a unique ID field (working)

combo box 3 provides a drop down with a list that displays all the fields in the selected layer (from combo box 1)

combo box 4 will provide a list of all the values for the selected field (from combo box 3)

Combo box 4 is broken, and when I click in the drop down window the python windows displays the following error:

>>>

AttributeError: value

>>>

The scripting is posted below. I can add the rest if needed. Thank you all very much for the assistance.

class ComboBoxClass3(object):

"""Implementation for SecureSurveyDefinitionQuery.toolbar_1 (ComboBox)"""

def __init__(self):

self.editable = True

self.enabled = True

self.dropdownWidth = 'WWWWWWWWWWWWWWWWWW'

self.width = 'WWW'

def onFocus(self, focused):

if focused:

values = [row[0] for row in arcpy.da.SearchCursor(LayerName, attName)]

uniqueValues = set(values)

self.items = []

for uniqueValue in uniqueValues:

self.items.append(uniqueValue)

pass

def onSelChange(self, selection):

global SurveyCode

val = (self.items, selection)[1]

SurveyCode = str(val)

field = '"SURVEY_FILE_ID"'

queryStr = str(field) + "= " + str(Survey_File_ID) + " AND " + '"' + str(attName) + '"' + " =" + "'" + str(SurveyCode) + "'"

mxd = arcpy.mapping.MapDocument("CURRENT")

df = arcpy.mapping.ListDataFrames(mxd, "Layers")[0]

for lyr in arcpy.mapping.ListLayers(mxd, LayerName, df):

if lyr.supports("DEFINITIONQUERY"):

lyr.definitionQuery = queryStr

arcpy.RefreshActiveView()

del mxd

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