List sdc_entity_mapping and other modules and Canvas plans as alternative?

Good catch, thank you. I have updated the "Similar projects" section on the project page to list sdc_entity_mapping with a brief description of how the two approaches differ.

I am not aware of other dedicated modules covering this use case at the moment. If you know of related core issues worth linking, feel free to share them here and I will add those as well.

Thanks

This just landed in canvas: https://git.drupalcode.org/project/canvas/-/commit/29e44233fe353fda804eba99ae0aa4fdf55f0050

However, it only applies to code components at the moment, which is a deal-breaker if you need a non-JS fallback.

But maybe it's worth taking a look at the code; perhaps there's still room for some standardization.

Thanks @thomas.frobieter! That's useful context.

The Canvas commit you referenced is worth noting — it addresses entity mapping specifically for code components. As you pointed out, the non-JS fallback limitation is significant: site builders using block/UI components with a standard Canvas form widget aren't served by that approach, which is precisely the gap this module fills.

I'll update the project page to reference that Canvas work alongside sdc_entity_mapping, with a clear note on what each covers and where this module fits in.

I've looked through that Canvas commit. It adds a content-entity-reference well-known prop shape for code components (JavaScript/React) — entity type and bundle are declared via dataDependencies.entityFields in the JS component config and resolved at render time by JsComponent::getExplicitInput(). There is no autocomplete widget and no Twig/non-JS path, so it does not address the use case this module covers: Twig/block components with a proper Canvas form widget for content editors.

The approaches are complementary rather than overlapping — code component authors can use Canvas core's built-in mechanism; Twig component authors need this module.

Updated the README "Related issues" section to reference the Canvas commit and sdc_entity_mapping with a clear note on what each covers and where this module fits in.

Okay, thanks for looking into it. I'll start creating SDCs with Canvas Entity Reference next week and will test them thoroughly. I'm really looking forward to it!👌

Thank you much appreciated!