Setting object style name within family document

Developers
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1

Hi all,

Off the back of @SeanP 's great post here. I am trying to not only export subcategories but change the name of any it encounters called “Escape Lines” and rename them to “Escape”.

He alludes to this being conceptually possible here: Get List of Object Styles from Families in Directory - #8 by SeanP

But I am having trouble trying to realise it.

What I have tried so far is:

#Loop each line to get the Subcategory or Object Style of the Line
	for line in lines:
		sub = line.LookupParameter("Subcategory").AsElementId()
		#Get the Name of the Object Style
		subname = famDoc.GetElement(sub).Name
		if subname.lower() == "escape lines":
			TransactionManager.Instance.EnsureInTransaction(famDoc)
			famDoc.GetElement(sub).Name = "Escape"
			TransactionManager.Instance.TransactionTaskDone()

	TransactionManager.Instance.ForceCloseTransaction()
	#Add the List of Object Syles for that Family to the Overall List
	ObjectStyles.append(subs)
	#Close the Family Document without saving	
	famDoc.Close(False)

But I’m getting the error:
image

Is this the computer basically saying no to setting a subcategories name? If so, I don’t accept it if so :rofl:

1 Like
2

Unfortunately, I don’t think you can do that. Your best bet would be to duplicate with a different name and reassign as required. Or manually rename :frowning:

1 Like
3

Ahh shame, I’ll go down the duplication route if possible but definitely a bit more effort!

4

hi

here a workaround, by creating a new one and delete the old

change name linestyle

import clr
import sys
import System
#
clr.AddReference('ProtoGeometry')
from Autodesk.DesignScript.Geometry import *
import Autodesk.DesignScript.Geometry as DS

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

#import net library
from System import Array
from System.Collections.Generic import List, IList, Dictionary

#import transactionManager and DocumentManager (RevitServices is specific to Dynamo)
clr.AddReference('RevitServices')
import RevitServices
from RevitServices.Persistence import DocumentManager
from RevitServices.Transactions import TransactionManager
doc = DocumentManager.Instance.CurrentDBDocument

def change_line_style_name(old_style_name, new_style_name):
    """
    This function changes the line style name from old_style_name to new_style_name.
    
    Parameters:
    old_style_name (str): The name of the old line style.
    new_style_name (str): The name of the new line style.
    
    Returns:
    list: A list of lines with the updated line style.
    """
    old_lineSubCat = next((subcat for subcat in doc.OwnerFamily.FamilyCategory.SubCategories if subcat.Name == old_style_name), None)
    if old_lineSubCat is None:
        return  "Category '{}' not found".format(old_style_name)
    else:
        TransactionManager.Instance.EnsureInTransaction(doc)
        new_lineSubCat = next((subcat for subcat in doc.OwnerFamily.FamilyCategory.SubCategories if subcat.Name == new_style_name), None)
        if new_lineSubCat is None:
            new_lineSubCat = doc.Settings.Categories.NewSubcategory(doc.OwnerFamily.FamilyCategory, new_style_name)
            # copy properties to the the new category
            new_lineSubCat.LineColor = old_lineSubCat.LineColor
            for i in System.Enum.GetValues(GraphicsStyleType):
                try:
                    new_lineSubCat.SetLinePatternId(old_lineSubCat.GetLinePatternId(i), i)
                    new_lineSubCat.SetLineWeight(old_lineSubCat.GetLineWeight(i), i)
                except Exception as ex:
                    print(ex)
            
        lines = FilteredElementCollector(doc).OfCategory(BuiltInCategory.OST_Lines).WhereElementIsNotElementType().ToElements()
        #
        for line in lines:
            para = line.get_Parameter(BuiltInParameter.FAMILY_CURVE_GSTYLE_PLUS_INVISIBLE)
            graphicStyle = line.LineStyle
            line.LineStyle = new_lineSubCat.GetGraphicsStyle(graphicStyle.GraphicsStyleType)
        # delete the old line style
        doc.Delete(old_lineSubCat.Id)
        TransactionManager.Instance.TransactionTaskDone()
        return lines  

old_style_name = IN[0]
new_style_name = IN[1]

if doc.IsFamilyDocument :
    OUT = change_line_style_name(old_style_name, new_style_name)
2 Likes
5

Once again, thank you @c.poupin for your magic Python solution.

2 Likes