How to lock InnerBlocks in registerBlockVariation()

[lindsayweb]

I'm using the following media-text block variation, and I want to lock the InnerBlocks (not the block itself). Adding the templateLock attribute didn't work. Is it possible?

wp.blocks.registerBlockVariation(
'core/media-text',
{
    name: 'media-text-offset',
    title: 'Offset Callout',
    attributes: {
        backgroundColor: 'orange',
        className: 'is-style-offset',
        templateLock: 'all'
    },
    isActive: [ 'className' ],
    innerBlocks: [
        ["core/paragraph", { placeholder: "Label", className: "label" }],
        ["core/heading", { level: 2, placeholder: "Heading" }],
        ["core/paragraph"]
    ],
}
);

[stokesman]

It’s not possible at the moment. Unlike the Group or Columns block templateLock is not an attribute of the Media & Text block. If someone were to make a PR to add the attribute I'd expect it would be merged. It should be quite simple. For reference, here’s the PR that did so for the aforementioned blocks #26128. It could probably be simpler than that because it’s only one block and I don’t suppose there’d be a need to add tests.