Filter Views with 'null' value

Revit
1

I would like to filter 3D Views by name. In this sample I want to separate all views with ‘Kopia’ in their name. The graph, which works in other cases, e.g.here for levels: Element filter by name - #2 by Renzoj14
would give me an error, I believe when it encounters a ‘null’ in value. Is there a workaround?

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2

Are some of those 3d views view templates?

3

I’m not sure what they are, they seems to block the script.

4

After collecting the 3d views, plug in another node called View.IsViewTemplate. There is an OOTB one or one from Clockwork. That will tell you if they are view templates.

Background - Dynamo does not play well with 3d view templates. (because for some reason there are no wrappers for that data type)

5

@john_pierson ,

I am more on the nulls…

elements= IN[0]
nulls = []
nums = []

for i in elements:
    if i == None:
        nulls.append(i)
    else:
        nums.append(i)

OUT = nulls,nums

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6

The problem is that the String.Contains node can’t deal with the null as it is not a string. So what we can do is replace the null with a “string version” of it:

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I think if you add the little code block with:

name == null? "Null": name;

after the Element.Name node and put its output in the String.Contains node it should work.

The one downside is that the Element.Name node still gives an error.

1 Like
7

@PauLtus ,

i recognized null is not Null. It is None… in Python it works well

8

I know that null in Python is None.
Don’t worry about the capital letter difference between "Null" and null (edit for clarification: I just did this so it was easier for myself to differentiate).
The important difference is that the None/null is now a string, and thus the String.Contains node can take this data.

1 Like