💥 Rename regex to param to provide compatibility with Pydantic V2

[stickM4N]

I faced this issue with Pydantic V2 and there is a simple workaround to it by passing the pattern Field parameter as schema extra:

Ex:

class MyClass(SQLModel)
    id: str = Field(unique=True, schema_extra={'pattern': r"^\d{5}$"})

This should be labeled as breaking
I don't know if this issue was already fixed in another branch, I saw there was a temporary PR already made but closed.

[stickM4N]

@tiangolo @alejsdev or some other maintainer... could you please review this issue?

[svlandeg]

Thanks for the PR! We're going through the backlog of PRs right now, and will get back to you once we've had the time to review this and consider the (breaking) change 🙏

[stickM4N]

@svlandeg Nice to hear you are taking action on this matter. There is remark, the parameter the was renamed between Pydantic v1 and v2 is regex-> pattern, not as listed in the PR.

The suggestion I made in the PR was to keep both versions compatible when upgrading, but there is an alternative, which is not managing the change between them and just provide the proper type hints.

If you want me to update the PR just let me know, IDK which approach is more adequate for the project.