NWC Export doesn't throw errors, but won't actually export anything...?

[rjohnstonBK2JP]

I have this script i'm making for my pyRevit extension that bulk exports NWCs. Esstentially, if there's a view with "NAVIS_" in the name, it uses my preselected settings and exports files to a directory. I currently have a lot of print statements for debugging and zero user input for the sake of just trying to get this thing to work. I even removed all my options in this most recent try and defaulted to whatever options come as default.

I'm stumped because it's not throwing any errors, but the export is failing. I've tinkered with it for a couple hours trying to get it to work, but to no avail. Can someone throw me a bone please?! What am I doing wrong?

# !python3
import clr
clr.AddReference('RevitAPI')
clr.AddReference('RevitServices')
clr.AddReference('RevitNodes')

from Autodesk.Revit.DB import *
from RevitServices.Persistence import DocumentManager
from RevitServices.Transactions import TransactionManager
import os
from datetime import datetime

# Initialize the current document
doc = __revit__.ActiveUIDocument.Document # type: ignore

# Function to export views containing "NAVIS_" in their name
def export_navis_views():
    if not OptionalFunctionalityUtils.IsNavisworksExporterAvailable():
        print("Navisworks exporter is not available. Please install the necessary functionality.")
        return
    else:
        print("Navisworks Exporter installation files are installed...\nProceeding")
    
    today = datetime.now().strftime("%Y-%m-%d")

    print("\nStarting export_navis_views function")
    # Get all views in the project
    views_in_doc = FilteredElementCollector(doc).OfClass(View3D).ToElements()
    print(f"\tFound {len(views_in_doc)} views in the document")

    
    # Filter views with "NAVIS_" in the name
    navis_view_elements = [view for view in views_in_doc if "NAVIS_" in view.Name]
    print(f"\nnavis_view_elements = {navis_view_elements}")
    print(f"\tFiltered {len(navis_view_elements)} views containing 'NAVIS_' in the name")

    
    # Set up Navisworks export options
    options = NavisworksExportOptions()
    options.ConvertElementProperties = True
    options.ConvertLights            = True
    options.ConvertLinkedCADFormats  = True
    options.Coordinates              = NavisworksCoordinates.Shared
    options.DivideFileIntoLevels     = True
    options.ExportElementIds         = True
    options.ExportLinks              = True
    options.ExportParts              = True
    options.ExportRoomAsAttribute    = True
    options.ExportRoomGeometry       = True
    options.ExportScope              = NavisworksExportScope.View
    options.ExportUrls               = True
    options.FacetingFactor           = float(1.0)
    options.FindMissingMaterials     = True
    options.Parameters               = NavisworksParameters.All

    print(f"Options: {options}")

    # Directory to save the exported NWC files
    export_dir = "C:\\Users\\rjohnston\\Documents\\05_In-Progress-Content"
    print(f"\nexport_dir = {export_dir}")
    
    if not os.path.exists(export_dir):
        print("\tDirectory Path Entered Does Not Exist.")
        return
    else:
        print("\tDirectory exists. Proceeding with export...")

    # Start transaction
    t = Transaction(doc, "Bulk Export to NWC")
    t.Start()
    
    try:
        # Export each view
        for view in navis_view_elements:
                try:
                # Create file path
                    file_name = f"{view.Name}_{today}"
                    print(f'\nPreparing to export view: {view.Name} with file name: {file_name}')
                    # Export view to NWC
                    doc.Export(export_dir, file_name, NavisworksExportOptions())
                    print("Exported Executed.")
                
                except Exception as e:
                    print(f"\tException occurred while exporting {view.Name}: {e}")
                    t.RollBack()
                    return

    except Exception as e:
        print(f"\tTransaction Failed: {e}")
        t.RollBack()
        return
    
        # End transaction
    t.Commit()
    print("\n\nTransaction Committed")
    

# Call the function to export Navisworks views
export_navis_views()
print("Script execution completed")

Here's the pyrevit window after it prints:

[jeremy_tammik]

Does the export work as expected when driven manually from the user interface?

[rjohnstonBK2JP]

Yea, I exported it manually using File > Export > Export NWC and it works fine. I even ran the "OptionalFunctionalityUtils.isNavisworksExporterAvailable()" test and the exporter is available. Did you test this and it worked for you?