Programmatically select a GROUP node using PyQGIS

Question

I have seen ways to programmatically select a current layer using QgsLayerTreeView().setCurrentLayer() but I cannot find a way to change the group selection. Does anyone have any tricks/hacks that I can use or point me to the relevant Qgs class that I can use?

Answer 1

The following script selects a node by name.

from qgis.PyQt.QtCore import *

def select(name):
    view = iface.layerTreeView()
    m = view.model()
    
    listIndexes = m.match(m.index(0, 0), Qt.DisplayRole, name, Qt.MatchFixedString)
        
    if listIndexes:
        i = listIndexes[0]
        view.selectionModel().setCurrentIndex(i, QItemSelectionModel.ClearAndSelect)
    else:
        raise Exception(f"'{name}' not found")
    
select("group1")

There are also different type of matches that can be used when searching nodes.

Limitation: It selects any kind of node (group or layer) at top-level, which means it doesn't select nodes in nested sublevels.