Add support for composite types

[RobertCraigie]

Problem

In 3.10 Prisma added support for embedded types, this looks like this in the schema

model User {
  id Int @id @default(autoincrement())
  name String
  photo Photo
}

type Photo {
  width  Int
  height Int
  data   Bytes
}

This is currently only supported for MongoDB although there are plans to add support for this to other database providers in the future.

Suggested solution

I have not looked into the API that Prisma provides for this yet but I imagine that this will be very similar to relational fields.

https://www.prisma.io/docs/concepts/components/prisma-client/composite-types

[farzad-salimijazi]

@RobertCraigie, Is this supported using the Prisma python client yet?

[RobertCraigie]

@farzad-salimijazi Unfortunately it's not supported yet. This is a more difficult feature to implement as we currently only run tests against SQLite and PostgreSQL, so before I can even start working on this I need to figure out a good solution for testing MongoDB as well.

It's also difficult because this is an entirely new concept which we'll need to figure out how to design internally.

In the meantime you can either fall back to using a Json field or define it as a model instead, although that could be a bit annoying to work with.

[timreibe]

+1

[arthur-fontaine]

+1. I can contribute to it if needed

[arthur-fontaine]

I have just opened a PR #1045 to add support for composite types. The PR is not finished yet, at the moment it only generates client types. I need to write e2e tests to know what else needs to be done.