Create Views if they do not exist

Revit
1

Hi,
I’m trying to work up a python code to create 2 views if they don’t exist in the project.
But am struggling with it, any help would be appreciated.

import clr
clr.AddReference('RevitAPI')
import Autodesk
from Autodesk.Revit.DB import*

clr.AddReference('RevitServices')
from RevitServices.Persistence import DocumentManager
from RevitServices.Transactions import TransactionManager

# The inputs to this node will be stored as a list in the IN variables.
ExistViews = UnwrapElement(IN[0])

# Place your code below this line
output = []
doc = DocumentManager.Instance.CurrentDBDocument
lvls = FilteredElementCollector(doc).OfClass(Level).ToElements() #Collect all levels
#uidoc = DocumentManager.Instance.CurrentUIApplication.ActiveDocument

def _Create3DView(viewname):
	#Get all view types
	viewTypes = FilteredElementCollector(doc).ofClass(ViewFamilyType)
	
	#Get ID of 3D view type
	for i in viewTypes:
		if i.ViewFamily == ViewFamily.ThreeDimensional:
			view3DTypeId = i.Id
			break
			
	TransactionManager.Instance.EnsureInTransaction(doc)
			
	NewView = View3D.CreateIsometric(doc, view3DTypeId)
	NewView.Name = viewname #"3D Dwfx Export"
#	TransActionManager.Instance.TransactionTaskDone()
	return NewView

TransactionManager.Instance.EnsureInTransaction(doc)

for View in ExistViews:
	
	if not View == "DWFx Plan View":
		viewTypes = FilteredElementCollector(doc).OfClass(ViewFamilyType).ToElements()

#		Get ID of 3D view type
		for ix in viewTypes:
			if ix.ViewFamily == ViewFamily.FloorPlan:
				viewTypeId = ix.Id
			break
		
		NewView = ViewPlan.Create(doc, viewtypeId, lvls)
		NewView.Name = "DWFx Plan View"
			
	if not View == "3D Dwfx Export":
		_Create3DView("3D Dwfx Export")

output.append(NewView.ToDSType(True))
TransActionManager.Instance.TransactionTaskDone()
# Assign your output to the OUT variable.
OUT = output
2

Why don’t you simply create the views, inside a try except block?
If a view both same name exists, it will throw an error, so no view will created

3

Hello @EddieSaez

there are quite a few errors in your code.

errorPython122
errorPython1221032×936 64.8 KB

it is better to use the “in” operator rather than iterating over a list of strings

image
image1378×529 157 KB

if you are a beginner, here is a link that can be useful to you
https://dynamopythonprimer.gitbook.io/dynamo-python-primer/

3 Likes
4

Thanks for your input.
Yes I’m a beginner and intend on sitting through the primer and what ever other training I can find on Python.
I managed to get this working with your input… appreciate the help.

Thank you

5

I do have a query someone maybe able to help with.
The following IF “” Not In “” bit of code doesn’t seem to be working correctly.
It seems to find the floorplan view called DWFx Plan View so doesn’t create one but it does create another floorplan view and calls is FLOOR PLAN and if run again creates a 2nd one with (2) appended to the name.

if "DWFx Plan View" not in ExistViewsName:
	viewTypes = FilteredElementCollector(doc).OfClass(ViewFamilyType).ToElements()

#	Get ID of 3D view type
	for ix in viewTypes:
		if ix.ViewFamily == ViewFamily.FloorPlan:
			viewTypeId = ix.Id
			#break
		
		for lvl in lvls:
			NewView = ViewPlan.Create(doc, viewTypeId, lvl.Id)
			NewView.Name = "DWFx Plan View"	#_" + lvl.Name
			output.append(NewView)
			break

Also is there a way to avoid an error if it can’t create the view.
Errors on line 47 being. this NewView.Name = “DWFx Plan View” #_" + lvl.Name
image

TIA.
Eddie