Feature Request: generate Mongo validation rules

[nahuel]

It will be nice to be able to generate Mongo validation rules from Beanie models. Currently is trivial to run SomeRootModel.schema() and get the JSON schema from Pydantic, but:

• The schema should be wrapped with a $jsonSchema mongo operator.
• Pydantic generates a $def block and links those definitions using a $ref link, this is non compatible with Mongo, as it doesn't support $refs, so every $ref should be changed to an inline definition.
• Mongo supports the draft 4 JSON schema specification (old, e.g. it doesn't supports contains) with some differences that should be addressed to get a valid validation rules schema from the JSON schema generated by Pydantic:
  • https://www.mongodb.com/docs/manual/reference/operator/query/jsonSchema/#extensions
  • https://www.mongodb.com/docs/manual/reference/operator/query/jsonSchema/#omissions

See:

• https://www.mongodb.com/docs/manual/core/schema-validation/specify-json-schema/#std-label-schema-validation-json