[fix] pass is root parameter on node creation (#4730)

frappe/desk/treeview.py

@@ -67,6 +67,9 @@ def make_tree_args(**kwarg):
 	parent_field = 'parent_' + doctype.lower().replace(' ', '_')
 	name_field = kwarg.get('name_field', doctype.lower().replace(' ', '_') + '_name')
 
+	if kwarg['is_root'] == 'false': kwarg['is_root'] = False
+	if kwarg['is_root'] == 'true': kwarg['is_root'] = True
+
 	kwarg.update({
 		name_field: kwarg[name_field],
 		parent_field: kwarg.get("parent") or kwarg.get(parent_field)

frappe/public/js/frappe/views/treeview.js

@@ -253,6 +253,13 @@ frappe.views.TreeView = Class.extend({
 			v.parent = node.label;
 			v.doctype = me.doctype;
 
+			if(node.is_root){
+				v['is_root'] = node.is_root;
+			}
+			else{
+				v['is_root'] = false;
+			}
+
 			$.extend(args, v)
 			return frappe.call({
 				method: me.opts.add_tree_node || "frappe.desk.treeview.add_node",