I've created a simple Python Add-in extension for taking a value from the mxd name and using it in a definition query. The map automatically opens to the area of interest as specified in the title. I have a startup() event which checks for the custom extension and gives a warning that it should be turned on. Can I turn on a custom extension if it isn't already on?arcpy.CheckInExtension("CustomName")
returns : u'Unrecongized extension code CusstomName'If i don't have the extension on, the openDocument() event listener doesn't listen.....My basic openDocument code is below. If I can't turn on my extension, is there another way to get this done automatically for the user? def openDocument(self):
mxd = arcpy.mapping.MapDocument('current')
mxd_name = mxd.filePath
##Only try this if its a TMDL document or in the TMDL directory?
if mxd_name.find("TMDL") > 0:
mxd_name = mxd_name.replace(' ', '')[:-4].upper()
mxd_name_len = len(mxd_name)
huc = mxd_name[(mxd_name_len - 8): mxd_name_len]
df = mxd.activeDataFrame
lyr = arcpy.mapping.ListLayers(mxd, "8 Digit HUC", df)[0]
lyr.definitionQuery = u"HUC_ID ='" + huc + "'"
df.extent = lyr.getExtent()
arcpy.RefreshActiveView()
return
