SQLAlchemy filter by FileType

[tyyrok]

Hello guys,
I haven't found any info about this error in web, so writing here...

Some days ago I tried to make a query in SQLAlchemy and filter FileType field by file extension. So I had this error:

   File "/usr/local/lib/python3.11/site-packages/fastapi_storages/integrations/sqlalchemy.py", line 44, in process_bind_param 
check-point-core   |     if len(value.file.read(1)) != 1:
check-point-core   |            ^^^^^^^^^^
check-point-core   | AttributeError: 'str' object has no attribute 'file'

My models:

class Job(Base):
    attachments: Mapped[list["JobAttachment"]] = relationship(
        "JobAttachment",
        back_populates="job",
        lazy="selectin",
        cascade="all, delete",
        passive_deletes=True,
    )
class JobAttachment(Base):
    job_id: Mapped[Optional[int]] = mapped_column(
        Integer, ForeignKey("jobs.id", ondelete="CASCADE")
    )
    job: Mapped["Job"] = relationship("Job", back_populates="attachments")

    content: Mapped[Optional[FileType]] = mapped_column(
        FileType(storage=a_jobs_storage), nullable=True
    )

I use FileType from

from fastapi_storages.integrations.sqlalchemy import FileType

And my query something like this:

            select(
                Job.id,
                func.count().label("attachment_count")
            )
            .select_from(Job)
            .join(JobAttachment, Job.attachments)
            .filter(
                or_(
                    JobAttachment.content.endswith(".jpg"),
                    JobAttachment.content.endswith(".png"),
                    JobAttachment.content.endswith(".jpeg"),
                )
            )
            .group_by(Job.id)
            .alias()

For storage I use from S3Storage.

Everything works when I manipulate with results of query but in filter there is this error.
Is it possible to use FileType field in this way?

P.S. Also I tried to filter by content.path but it's unavailable in filter.