Rhino Inside create railing revit API python

[igpema]

Hello!
does anybody have any clue how to create a railhand in Revit using Rhino.Inside?

It throws an error that doesnt allow me to generate the railhand

thanks in advance

[Rickson]

Transaction Failure in Scripted C# Component

Hi, There is a conflict with Revit MFC context and Rhino MFC context. We are working to fix this in Rhino. But meanwhile there is a method called RhinoInside.Revit.Rhinoceros.InvokeInHostContext that should help here. As EnqueueAction InvokeInHostContext is a temporary workaround. EnqueAction was there when RiR was unable to keep the Revit API context, now is no more needed and will be removed. Same will happen to InvokeInHostContext once we address this. public class Script_Instance : GH_…

[igpema]

Hello Rickson,

thanks for the help, it seems to be a work around, only, if you could tell me how to translate it to python. I have little understanding of C#…

as far as I understood I need to add the RhinoInside.Revit.Rhinoceros.InvokeInHostContext. Nevertheless something is missing cause I added up to the code but still not working.

thanks in advance!

[Rickson]

I don’t think you need that. I believe it needs

doc
railing type.id
level.id
curves as iList[ElementId]()

i’ll see if i can get something working, learning here myself.

[Rickson]

Ok, got this to work, barely…

the curve to List[Curve] to List[CurveLoop] is certainly not the ideal way. Hopefully a py pro will comment with the right way.

RiR-CreateRailing_Py.gh (9.4 KB)

import clr
clr.AddReference('System.Core')
clr.AddReference('RhinoInside.Revit')
clr.AddReference('RevitAPI') 
clr.AddReference('RevitAPIUI')
clr.AddReference('System')

from System.Collections.Generic import List

from System import Enum

import rhinoscriptsyntax as rs
import Rhino
import RhinoInside
import Grasshopper
from Grasshopper.Kernel import GH_RuntimeMessageLevel as RML
from RhinoInside.Revit import Revit, Convert
from Autodesk.Revit import DB

clr.ImportExtensions(RhinoInside.Revit.Convert.Geometry)

# active Revit verison
REVIT_VERSION = Revit.ActiveUIApplication.Application.VersionNumber

# access the active document object
doc = Revit.ActiveDBDocument

def show_warning(msg):
    ghenv.Component.AddRuntimeMessage(RML.Warning, msg)

def show_error(msg):
    ghenv.Component.AddRuntimeMessage(RML.Error, msg)

def show_remark(msg):
    ghenv.Component.AddRuntimeMessage(RML.Remark, msg)

curves = List[DB.Curve]()
curves.Add(Curve.ToCurve())

clc = DB.CurveLoop.Create(curves)

# create and start the transaction
t = DB.Transaction(doc, 'Create Railing')
t.Start()
try:


    railing = DB.Architecture.Railing.Create(doc, clc, Type.Id, Level.Id)

    t.Commit()
except Exception as txn_err:
    # if any errors happen while changing the document, an exception is thrown
    # make sure to print the exception message for debugging
    show_error(str(txn_err))
    # and rollback the changes made before error
    t.RollBack()

edit (you probably want to throw the data dam back in there or it will create again and throw an error)

[igpema]

hello Rickson,

Thanks a lot for the effort! It is really nice from you to spend some time on my issue. Nevertheless I am not sure why i continue having the same problem thant I had with my code.

maybe a third person can try your code and say if for him/her works, cause maybe there is something wrong with my revit.

Cheers.

[Rickson]

Igperma, I believe the error is due to creating another instance on top of the previous.

If i open up a clean file, select railing type and level then activate i get no errors, if i change the radius, reactivate it works fine. If i hit a GH refresh it throws the warning (still creating the object)

No worries, they are adding in a Railing by Curve component on the next release…

[Rickson]

Latest RiR with Add Railing Component…