TypeError: issubclass() arg 1 must be a class #312
Description
First Check
- I added a very descriptive title to this issue.
- I used the GitHub search to find a similar issue and didn't find it.
- I searched the SQLModel documentation, with the integrated search.
- I already searched in Google "How to X in SQLModel" and didn't find any information.
- I already read and followed all the tutorial in the docs and didn't find an answer.
- I already checked if it is not related to SQLModel but to Pydantic.
- I already checked if it is not related to SQLModel but to SQLAlchemy.
Commit to Help
- I commit to help with one of those options 👆
Example Code
from datetime import date
from typing import Optional, Union
from sqlmodel import SQLModel
class Person(SQLModel):
name: str
birthdate: Optional[Union[date, str]]
....Description
I want to store information about some people in a MySQL database. Due to the nature of the information, birth dates can be full dates (1940-05-02), month and year (1932-07) or years only (1965). I searched the pydantic documentation and it says to use Unions to accept multiple data types. However, when I try to do this sqlmodel raises the error TypeError: issubclass() arg 1 must be a class. I know the issue comes from union because if I remove it then the code works just fine.
Operating System
Windows
Operating System Details
No response
SQLModel Version
0.0.6
Python Version
3.10.2
Additional Context
No response