asyncpg异常DataError查询参数的无效输入

如何解决asyncpg异常DataError查询参数的无效输入

我的模特

    boundary_table = Table(
        'boundary',Metadata,...
        Column('geom',Geometry(geometry_type='GEOMETRY'),nullable=False)
    )

我的观点

    class DetailBoundaryView(handlers_base.BaseView):
        URL_PATH = r'/boundary/{boundary_id:\d+}'
    
        @property
        def boundary_id(self):
            return int(self.request.match_info.get('boundary_id'))
    
        @staticmethod
        async def get_boundary_by_id(conn,boundary_id):
            query = select([
                 ...
                db_schema.boundary_table.columns.geom.ST_Transform(4326).ST_AsGeoJSON(),]).select_from(
                db_schema.boundary_table
            ).where(
                db_schema.boundary_table.columns.id == boundary_id,)
            return await conn.fetchrow(query)
    
        @docs(tags=['boundary'],summary='Get boundary.')
        @response_schema(api_schema.BoundaryResponseSchema(),code=HTTPStatus.OK.value)
        async def get(self):
            data = await self.get_boundary_by_id(self.pg,self.boundary_id)
            if data is None:
                raise HTTPNotFound()
            return Response(body={'data': data},status=HTTPStatus.OK)

被问到我出错了

    Traceback (most recent call last):
      File "asyncpg/protocol/prepared_stmt.pyx",line 146,in asyncpg.protocol.protocol.PreparedStatementState._encode_bind_msg
      File "asyncpg/protocol/codecs/base.pyx",line 192,in asyncpg.protocol.protocol.Codec.encode
      File "asyncpg/protocol/codecs/base.pyx",line 103,in asyncpg.protocol.protocol.Codec.encode_scalar
      File "asyncpg/pgproto/./codecs/text.pyx",line 29,in asyncpg.pgproto.pgproto.text_encode
      File "asyncpg/pgproto/./codecs/text.pyx",line 12,in asyncpg.pgproto.pgproto.as_pg_string_and_size
    TypeError: expected str,got int
    
    The above exception was the direct cause of the following exception:
    
    Traceback (most recent call last):
         ...
        resp = await method()
      File "/Users/folt/Documents/Work/geodb/server/api/handlers/boundary.py",in get
        data = await self.get_boundary_by_id(self.pg,self.boundary_id)
      File "/Users/folt/Documents/Work/geodb/server/api/handlers/boundary.py",line 97,in get_boundary_by_id
        return await conn.fetchrow(query)
       ...
      File "asyncpg/protocol/protocol.pyx",line 178,in bind_execute
      File "asyncpg/protocol/prepared_stmt.pyx",line 160,in asyncpg.protocol.protocol.PreparedStatementState._encode_bind_msg
    asyncpg.exceptions.DataError: invalid input for query argument $1: 4326 (expected str,got int)

我想使用sqlalchemy编写查询。但是，在使用“几何”字段时遇到了一个问题。我尝试使用func模块中的sqlalchemy重复此查询。即使这样，我也会收到此错误。