Cannot input UUID from form

[mmzeynalli]

Checklist

• The bug is reproducible against the latest release or master.
• There are no similar issues or pull requests to fix it yet.

Describe the bug

So, I tried to manually add user from dashboard manually inputting UUID, and it throws sqlalchemy exception.

Steps to reproduce the bug

from sqlalchemy import Column, Boolean, Integer, String, create_engine
from sqlalchemy.orm import (
    declarative_base,
    relationship,
    sessionmaker,
    Mapped,
    mapped_column,
)
from uuid import UUID as PyUUID
from sqlalchemy.dialects.postgresql import UUID


Base = declarative_base()
engine = create_engine(
    "sqlite:///example.db",
    connect_args={"check_same_thread": False},
)
SessionLocal = sessionmaker(bind=engine)


class User(Base):
    __tablename__ = "users"

    uuid: Mapped[PyUUID] = mapped_column(UUID, primary_key=True)
    name: Mapped[str]

    def __str__(self) -> str:
        return f"User {self.uuid}"


Base.metadata.create_all(engine)  # Create tables

from fastapi import Request
from sqladmin import ModelView

class UserAdmin(ModelView, model=User):
    column_list = User.__table__.columns.keys()
    form_include_pk = True

from fastapi import FastAPI
from sqladmin import Admin

app = FastAPI()
admin = Admin(app=app, session_maker=SessionLocal)

admin.add_view(UserAdmin)

Add User from admin panel and it fails.

Expected behavior

Successful creation

Actual behavior

Exception:

Debugging material

(builtins.AttributeError) 'str' object has no attribute 'hex'
[SQL: INSERT INTO users (uuid, name) VALUES (?, ?)]
[parameters: [{'uuid': '00000000-0000-0000-0000-000000000001', 'name': 'John'}]]
Traceback (most recent call last):
  File "/home/mzeynall/Projects/sqladmin-test/.venv/lib/python3.10/site-packages/sqlalchemy/engine/base.py", line 1815, in _execute_context
    context = constructor(
  File "/home/mzeynall/Projects/sqladmin-test/.venv/lib/python3.10/site-packages/sqlalchemy/engine/default.py", line 1494, in _init_compiled
    l_param: List[Any] = [
  File "/home/mzeynall/Projects/sqladmin-test/.venv/lib/python3.10/site-packages/sqlalchemy/engine/default.py", line 1496, in <listcomp>
    flattened_processors[key](compiled_params[key])
  File "/home/mzeynall/Projects/sqladmin-test/.venv/lib/python3.10/site-packages/sqlalchemy/sql/sqltypes.py", line 3734, in process
    value = value.hex
AttributeError: 'str' object has no attribute 'hex'

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/home/mzeynall/Projects/sqladmin-test/.venv/lib/python3.10/site-packages/sqladmin/application.py", line 554, in create
    obj = await model_view.insert_model(request, form_data_dict)
  File "/home/mzeynall/Projects/sqladmin-test/.venv/lib/python3.10/site-packages/sqladmin/models.py", line 1088, in insert_model
    return await Query(self).insert(data, request)
  File "/home/mzeynall/Projects/sqladmin-test/.venv/lib/python3.10/site-packages/sqladmin/_queries.py", line 234, in insert
    return await coro
  File "/home/mzeynall/Projects/sqladmin-test/.venv/lib/python3.10/site-packages/anyio/to_thread.py", line 63, in run_sync
    return await get_async_backend().run_sync_in_worker_thread(
  File "/home/mzeynall/Projects/sqladmin-test/.venv/lib/python3.10/site-packages/anyio/_backends/_asyncio.py", line 2502, in run_sync_in_worker_thread
    return await future
  File "/home/mzeynall/Projects/sqladmin-test/.venv/lib/python3.10/site-packages/anyio/_backends/_asyncio.py", line 986, in run
    result = context.run(func, *args)
  File "/home/mzeynall/Projects/sqladmin-test/.venv/lib/python3.10/site-packages/sqladmin/_queries.py", line 203, in _insert_sync
    session.commit()
  File "/home/mzeynall/Projects/sqladmin-test/.venv/lib/python3.10/site-packages/sqlalchemy/orm/session.py", line 2030, in commit
    trans.commit(_to_root=True)
  File "<string>", line 2, in commit
  File "/home/mzeynall/Projects/sqladmin-test/.venv/lib/python3.10/site-packages/sqlalchemy/orm/state_changes.py", line 137, in _go
    ret_value = fn(self, *arg, **kw)
  File "/home/mzeynall/Projects/sqladmin-test/.venv/lib/python3.10/site-packages/sqlalchemy/orm/session.py", line 1311, in commit
    self._prepare_impl()
  File "<string>", line 2, in _prepare_impl
  File "/home/mzeynall/Projects/sqladmin-test/.venv/lib/python3.10/site-packages/sqlalchemy/orm/state_changes.py", line 137, in _go
    ret_value = fn(self, *arg, **kw)
  File "/home/mzeynall/Projects/sqladmin-test/.venv/lib/python3.10/site-packages/sqlalchemy/orm/session.py", line 1286, in _prepare_impl
    self.session.flush()
  File "/home/mzeynall/Projects/sqladmin-test/.venv/lib/python3.10/site-packages/sqlalchemy/orm/session.py", line 4331, in flush
    self._flush(objects)
  File "/home/mzeynall/Projects/sqladmin-test/.venv/lib/python3.10/site-packages/sqlalchemy/orm/session.py", line 4466, in _flush
    with util.safe_reraise():
  File "/home/mzeynall/Projects/sqladmin-test/.venv/lib/python3.10/site-packages/sqlalchemy/util/langhelpers.py", line 224, in __exit__
    raise exc_value.with_traceback(exc_tb)
  File "/home/mzeynall/Projects/sqladmin-test/.venv/lib/python3.10/site-packages/sqlalchemy/orm/session.py", line 4427, in _flush
    flush_context.execute()
  File "/home/mzeynall/Projects/sqladmin-test/.venv/lib/python3.10/site-packages/sqlalchemy/orm/unitofwork.py", line 466, in execute
    rec.execute(self)
  File "/home/mzeynall/Projects/sqladmin-test/.venv/lib/python3.10/site-packages/sqlalchemy/orm/unitofwork.py", line 642, in execute
    util.preloaded.orm_persistence.save_obj(
  File "/home/mzeynall/Projects/sqladmin-test/.venv/lib/python3.10/site-packages/sqlalchemy/orm/persistence.py", line 93, in save_obj
    _emit_insert_statements(
  File "/home/mzeynall/Projects/sqladmin-test/.venv/lib/python3.10/site-packages/sqlalchemy/orm/persistence.py", line 1048, in _emit_insert_statements
    result = connection.execute(
  File "/home/mzeynall/Projects/sqladmin-test/.venv/lib/python3.10/site-packages/sqlalchemy/engine/base.py", line 1419, in execute
    return meth(
  File "/home/mzeynall/Projects/sqladmin-test/.venv/lib/python3.10/site-packages/sqlalchemy/sql/elements.py", line 527, in _execute_on_connection
    return connection._execute_clauseelement(
  File "/home/mzeynall/Projects/sqladmin-test/.venv/lib/python3.10/site-packages/sqlalchemy/engine/base.py", line 1641, in _execute_clauseelement
    ret = self._execute_context(
  File "/home/mzeynall/Projects/sqladmin-test/.venv/lib/python3.10/site-packages/sqlalchemy/engine/base.py", line 1821, in _execute_context
    self._handle_dbapi_exception(
  File "/home/mzeynall/Projects/sqladmin-test/.venv/lib/python3.10/site-packages/sqlalchemy/engine/base.py", line 2363, in _handle_dbapi_exception
    raise sqlalchemy_exception.with_traceback(exc_info[2]) from e
  File "/home/mzeynall/Projects/sqladmin-test/.venv/lib/python3.10/site-packages/sqlalchemy/engine/base.py", line 1815, in _execute_context
    context = constructor(
  File "/home/mzeynall/Projects/sqladmin-test/.venv/lib/python3.10/site-packages/sqlalchemy/engine/default.py", line 1494, in _init_compiled
    l_param: List[Any] = [
  File "/home/mzeynall/Projects/sqladmin-test/.venv/lib/python3.10/site-packages/sqlalchemy/engine/default.py", line 1496, in <listcomp>
    flattened_processors[key](compiled_params[key])
  File "/home/mzeynall/Projects/sqladmin-test/.venv/lib/python3.10/site-packages/sqlalchemy/sql/sqltypes.py", line 3734, in process
    value = value.hex
sqlalchemy.exc.StatementError: (builtins.AttributeError) 'str' object has no attribute 'hex'
[SQL: INSERT INTO users (uuid, name) VALUES (?, ?)]
[parameters: [{'uuid': '00000000-0000-0000-0000-000000000001', 'name': 'John'}]]

Environment

OS: Linux
Python: 3.10
SQLAdmin: 0.22.0

Additional context

No response