source.mode "derived" needs `from`: the grid to derive from.

Warnings reference › source.derived.from

Identifier

source.derived.from

Raised by

The grid (core)

Since

1.10.0

What happened

A derived source computes its rows from another grid, and none was named - or, for a union, the array of parents resolved to nothing usable. The source is inert: it produces no rows at all.

The fix

Set from to the grid instance to derive from, or to an array of { grid, label } entries for a union.

The smallest fix

createGrid(el, { source: { mode: 'derived', from: parentGrid, follow: 'filtered' } });

Reference

Covered in full at the API reference.