How do you populate a treeview in perspective, I could not find any documentation on how to do it

[Transistor]

You may find my post below helpful. The Tree component (not Treeview as you have in your title) is tricky because the 'items' property is recursive.

Vertical menu tree in perspective

Here's how I did it. [Page configuration] Figure 1. Do the Page Configuration. [Menu structure editor] Figure 2. Create the menu structure in text. I do this in the actual application. Note the use of the '|' pipe character to separate the menu and URL. Bind the tree's items property to the text and apply a script transform on it:

The 'items' binding script transform.

def transform(self, value, quality, timestamp): # Update the test tree with the structure. # Anchors and path URL…

Perspective - Tree | Ignition User Manual