Create and apply list of filters to single view using Python

Developers
1

Hi everyone,

I’m trying to create a list of filters and apply to the view. I’m able to create one filter but when I put a loop in to create multiple filters. I got it solved with code below.

    import clr
    clr.AddReference("RevitServices")
    import RevitServices
    from RevitServices.Persistence import DocumentManager
    from RevitServices.Transactions import TransactionManager
    doc = DocumentManager.Instance.CurrentDBDocument
    clr.AddReference("RevitAPI")
    import Autodesk
    from Autodesk.Revit.DB import *
    import System
    from System.Collections.Generic import *


    dataEnteringNode = IN




    cats = IN[0]
    rules = IN[1]
    view = UnwrapElement(IN[2])
    filterName = IN[3]

    TransactionManager.Instance.EnsureInTransaction(doc)

    catList = []
    for i in cats:
    	catList.append(ElementId(i.Id))

    typedCatList = List[ElementId](catList)






    filterlist = []
    for i in filterName:
    	filterlist.append(i)

    try:
    	
    	for name in filterlist:
    		filter = ParameterFilterElement.Create(doc, name, typedCatList,rules)
    		
    		view.AddFilter(filter.Id)	
    except:
    	pass

    TransactionManager.Instance.TransactionTaskDone()


    OUT = filter
2

filtername = IN[3]
…
filtername =
Sets variable filtername to an empty list

len(filtername)
This evaluates to Zero, since list is empty.

range(len(filtername)):
Given the length of the list is zero, this doesn’t make sense.
It create a list that starts at 0 (default), and ends at 0 (len of list).
Python will skip this since it cannot iterate over a range of zero length.

3

Dude, you can just download a Archi-lab_ThinkParametric package from www.ThinkParametric.com website. There is also a course that explains just how to do it. :slight_smile:

1 Like
4

Also, no need to use range. Just iterate over filtername:

for name in filtername:
      filter = .....

and make sure you move the view.AddFilter and filterlist.append to inside the for loop.

5

This website has very good ability for posting code. Please remove the screenshot and repost with code. I would not expect people to retype your code just so they can help you debug it.

1 Like
6

Thank you so much Gui, I got it, I just started learning Python.

7

Will do. Thanks Konrad

8

@letuandinh Refer clip on this link Making rebar solid on how to paste code shown by @Einar_Raknes

9

Thank you !!