Field Parameters: Limit the fields available?

Question

Pretty simple. I have a field parameter, dependent on another parameter.

I want to keep certain fields out of drop-down for this field parameter, e.g. OBJECTID. I don't want it, can't use it for this task, I don't want to see it.

How can I accomplish this?

I tried assigning a filter, but that's not supported on fields, so my current workaround is to use a multivalue string parameter and making the filter be all the fields whose names aren't ObjectID, etc.

DonMorrison1 · Accepted Answer

Would something like this work?

p1.filter.list = [f.name for f in arcpy.ListFields(p0.value) if f.name not in ['OBJECTID', '<other undesireable fields>']]

abaldenweck@blm.gov_BLM_EGIS · Accepted Answer

That's almost exactly what I ended up doing.

I changed the Field Parameter to a string parameter (since I only needed the names and you can only filter field types), then

udFields.filters[0].list = [a.name for a in arcpy.ListFields(inExcel.value)
                                            if a.name.lower() not in 
                                                ["objectid", "globalid", 
                                                "guid", keyField.valueAsText.lower()]]

I should probably add OID in there, too, I guess.