The MultiLevelSelect kit renders a multi leveled select dropdown based on data from the user. treeData is a required prop that is expected to contain the data in the form of an array of objects. See code snippet for an example data array.

For the React version of the kit, the onSelect prop returns an array of all checked items, irrespective of whether it is a parent, child or grandchild. Open the console on this example and check and uncheck checkboxes to see this is action!

For the Rails version, the array of checked items is attached to the DOM in a data attribute titled data-tree on the wrapping div around the MultiLevelSelect.