[OJFord]

Access, but not constrain or type-check.

And it's just harder to use, I'm with it being generally a 'mistake' (in the 'you will regret this later' sense) - it's better than text, but I'm in the camp of as much structure as possible ('you will thank yourself later').

[formerly_proven]

> Access, but not constrain or type-check.

You can create CHECK constraints involving JSON operations in postgres, which is the same way you'd enforce any constraint.

[theptip]

Manually, right? Django autogenerates all of the SQL schema for you on non-JSON fields. You could replicate that work, but that sounds tedious.