Extensible Storage Dynamo Python 2024, ForgeTypeId?

Developers
,
1

Revit 2024 Dynamo Python3 see my error below. Thank you for taking the time to help!

My error:
Node Name: Python Script.
Package: Core.Scripting
Dynamo Version: 2.18.1.5096
Host: Dynamo Revit
Messages: TypeError : No method matches given arguments for Set: (<class ‘Autodesk.Revit.DB.ExtensibleStorage.Field’>, <class ‘str’>) [’ File “”, line 72, in \n’, ’ File “”, line 52, in attachSchemaToElements\n’]
State: Warning

This leads me to the following lines below:

    # Add a simple field of string data type to the schema
    fieldBuilder = schemaBuilder.AddSimpleField("MyField", SpecTypeId.String.Text)
    #PreviousTry
    #fieldBuilder = schemaBuilder.AddSimpleField("MyField", String)

or

        # Set the value for the schema field
        ent.Set(field, fieldValue, SpecTypeId.String.Text)
        #PreviousTry
        #ent.Set(field, fieldValue)

What have I referenced:

Full Code Below:

# Import required libraries
import clr
clr.AddReference('ProtoGeometry')  # Geometry library
clr.AddReference('RevitServices')  # Revit Services library
clr.AddReference('RevitAPI')  # Autodesk Revit API
clr.AddReference('RevitNodes')  # Revit Node library
clr.AddReference('RevitAPIUI')  # Autodesk Revit UI
clr.AddReference('System')  # System library
from Autodesk.Revit.DB import *
from Autodesk.Revit.DB.ExtensibleStorage import *
from RevitServices.Persistence import DocumentManager
from RevitServices.Transactions import TransactionManager
from System import Guid, String

# Close any open transactions
TransactionManager.Instance.ForceCloseTransaction()

# Initialize variables
doc = DocumentManager.Instance.CurrentDBDocument  # Current Revit Document

# Function to attach a schema to multiple Revit elements
def attachSchemaToElements(elems, schemaName, myGuid, fieldValue):
    # Create Schema Builder
    schemaBuilder = SchemaBuilder(Guid(myGuid))
    schemaBuilder.SetReadAccessLevel(AccessLevel.Public)  # Public read access
    schemaBuilder.SetWriteAccessLevel(AccessLevel.Public)  # Public write access
    schemaBuilder.SetSchemaName(schemaName)  # Set schema name
    schemaBuilder.SetVendorId("myVID")  # Set Vendor ID
    
    # Add a simple field of string data type to the schema
    fieldBuilder = schemaBuilder.AddSimpleField("MyField", SpecTypeId.String.Text)
    fieldBuilder.SetDocumentation("This is a sample field.")
    
    # Finalize schema
    schema = schemaBuilder.Finish()
    
    # Initialize list to store elements that had schema set
    modified_elems = []
    
    # Start a new transaction
    t = Transaction(doc, "Attach Schema")
    t.Start()
    
    # Loop through each element and attach the schema
    for elem in elems:
        # Create a new entity based on the schema
        ent = Entity(schema)
        # Retrieve the field from the schema
        field = schema.GetField("MyField")
        # Set the value for the schema field
        ent.Set(field, fieldValue, SpecTypeId.String.Text)
        
        # Attach schema entity to the Revit element
        elem.SetEntity(ent)
        # Append element to the list
        modified_elems.append(elem)
    
    # Commit the transaction
    t.Commit()
    TransactionManager.Instance.TransactionTaskDone()
    
    return modified_elems

# Sample inputs (replace these with actual inputs from Dynamo)
elems = IN[0]  # List of Revit elements from Dynamo
schemaName = "MySchema" #IN[1]  # Schema name from Dynamo
myGuid = "720080CB-DA99-40DC-9415-E53F280AA1F0" #IN[2]  # GUID for the schema from Dynamo
fieldValue = "SampleValue" #IN[3]  # Field value from Dynamo


# Call the function and attach the schema to elements
OUT = attachSchemaToElements(elems, schemaName, myGuid, fieldValue)
2

AddSimpleField() needs a string and a System Type, however I think you are supplying a string and a ForgeTypeId try schemaBuilder.AddSimpleField("MyField", String)

Here the fieldValue is a string where the API docs note that this should be a FieldType however the main issue here is that the API is looking for a C# generic - see Pythonnet docs here and API docs here so for Set<FieldType>(Field, FieldType, ForgeTypeId) you can use in python ent.Set[String](field, String, SpecTypeId.String.Text)

1 Like
3

@Mike.Buttery Thank you! I replaced what you provided blindly and no joy. I will have to read your references and will repost results soon. Thanks again.

4

Hi,
for info, (in addition to overloading resolution issues) methods with template Parameters doesn’t work with PythonNet 2.5.x (seem fixed in PythonNet 3.x.x)

you can use IronPython (2 or 3) instead

1 Like
5

Thank you both for the assistance. I feel like I am fighting this alot and thinking perhaps C# is the path this time. Unless I have missed something here, Link.

1 Like
6

you can download it via the package manager

image
image1012×775 58.2 KB

7

Thanks Cyril, spent a bit of time trying to get around the bug today - didn’t work :expressionless: once you add the generic to Set all attributes and methods are not accessible

1 Like