Allow custom field attributes

Let’s say I want to make sure, that an email is always valid before it gets created. It would be awesome, if I could add an @email directive like so:

model User {
  id    Int @id
  email String @unique @email
}

While it makes sense, that @email is not allowed right now, if we would allow it, users could now add an email validation middleware. Allowing top-level @email probably doesn’t make sense though to keep validation rather strict so that we can also help with typos.

However, the same as in HTTP Headers, which can start with X- or HTML attributes, which can start with data-, we could add a namespace for custom directives, for example @custom.X.

That would allow a whole world of extensions for Prisma, which can be dealt with through middlewares.

And of course, this is just a wild idea, it could also just be trash and maybe we shouldn’t do it. So let’s have a discussion if this even makes sense 😃

[Mark-Panda]

When is it expected to be achieved

[pantharshit00]

Another idea: @custom(email)