insert without data

It's definitely something I can bring up with the team.

I'd be lying if I said I hadn't been bit by that "No Data" exception a time or two myself.

The thing to remember is that the Model class is basically a large set of convenience methods focused around a single table. So there will inherently be slightly different restrictions there than would be just using the query builder itself.

And there's no performance cost from using db_connect()->table() again, compared to doing it through the model.

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