I want the URL parameter to automatically concatenate some domain prefixes when I query the returned data

[weeptao]

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Example Code

'''python
from sqlalchemy.orm import DeclarativeBase
class Base(DeclarativeBase):
    pass
class Test(Base):
    __tablename__ = 'test'
    id: Mapped[int] = mapped_column(Integer, primary_key=True)
    url: Mapped[str] = mapped_column(VARCHAR(255))
    
    # similar
    def format_url(self):
        return f"http://xxx{self.url}"
'''

Description

When I use the Test model to query data, I hope that the URL I receive will always automatically trigger the format_url function, achieving automatic stitching effect

Operating System

Windows

Operating System Details

win 10

SQLModel Version

0.0.22

Python Version

3.13.2

Additional Context

No response

[20-buck-spin]

This is the pattern I use in my project, works like a charm. If I remember correctly the computed field needs to be outside of a table=True class else bad things happen :)

class TestBase(SQLModel):
    path: str

class Test(TestBase, table=True):
    id: int | None = Field(primary_key=True. default=None)

class TestPublic(TestBase):

    id: int

    @computed_field
    @property
    def url(self) -> str:
        return f"http://xxx{self.path}"