SQLModel seems to disable @model_validator when initialized with table=true

[eric-pa]

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Example Code

from sqlmodel import SQLModel, Field
from pydantic import model_validator

class SQLModelTest(SQLModel, table=True):
    id: str = Field(primary_key=True)

    @model_validator(mode="before")
    @classmethod
    def test(cls, data):
        print("Hello from sqlmodel")
        return data

sqlmodel_test = SQLModelTest(id="123")

Description

Hi,

I'm having problems migrating to pydantic v2. I have some logic in @root_validator for data that should be stored in the database. However, when using pydantic v2 and SQLModel with table=True the new @model_validator is not called. Everything works fine when table=False.

Is this a bug or am I doing something wrong?

Best
Eric

Operating System

Linux

Operating System Details

No response

SQLModel Version

0.0.14

Python Version

Python 3.12.1

Additional Context

No response

[rt87]

Same for me (with version 0.0.22)

[monchin]

I also found this bug and made a PR to fix it in #1041 but no responses so far.

For now, I found that your_obj = YourModel.model_validate(your_dict) would enable pydantic validation. In this discussion, it would be sqlmodel_test = SQLModelTest.model_validate({"id": "123"})

[mg3146]

I've tried this, but I'm getting "object has no attribute '_sa_instance_state'" errors in some of my model_validators