fields.py 文件源码

def from_db_value(self, value, expression, connection, context):
        if value:
            if not isinstance(value, Geometry):
                value = Geometry(value)
            srid = value.srid
            if not srid and self.srid != -1:
                value.srid = self.srid
        return value

    # ### Routines overloaded from Field ###