Column '{colId}' template looks like it contains control flow. Templates have none by design: use cell.classWhen for conditional styling and a function renderer for conditional content.

Warnings reference › tpl-control:*

Identifier

tpl-control:*

Raised by

The grid (rendering)

Since

1.0.1

What happened

The template contains something that looks like a Handlebars or Jinja block - {{#if}}, {% … %}, {{each}}. Lattice's cell templates are interpolation only, with no control flow at all, so the block is not interpreted: it renders as text or as an unknown binding. The line exists because people arrive expecting Handlebars.

The fix

Use cell.classWhen for conditional styling, and a function or component renderer for conditional content.

Reference

Covered in full at the API reference.