jsTree get siblings of a node - jstree

Question

I'm using drag and drop with jsTree, and when I drag a node to a new position, I have to update not only its position, but the positions of its siblings too in the database.
Here's an example:
If I drag New node into node Gamme 1, now it's siblings are gamme 501 and gamme 500
Getting data about the moved node and updating it's position in db is not a problem:
.on("move_node.jstree", function (e, data) {
console.log(data);
$.ajax({
type: "POST",
url: Routing.generate('saveGammeNewPosition'),
data: {
gammeId: data.node.id,
newParentId: data.node.parent,
position: data.position
}
});
})
But I have no idea how to get information about the new siblings of a node that has been moved.
When I do something like this, unfortunately I get no data on position as the json jsTree accepts has no position attribute:
$('#tree').jstree(true).get_json(data.node.parent, {flat: true})
So is there a way I can get data on positions of the siblings?

Answer 1

You can get the new parent of the node in the move_node event and use that to get its immediate children.
function getSiblings(nodeID, parent) {
var tree = $('#tree').jstree(true),
parentNode = tree.get_node(parent),
aChildren = parentNode.children,
aSiblings = [];
aChildren.forEach(function(c){
if(c !== nodeID) aSiblings.push(c);
});
return aSiblings;
}
$('#tree').on("move_node.jstree", function (e, data) {
var aSiblings = getSiblings(data.node.id, data.parent);
console.log(aSiblings);
});