sqlalchemy.py 文件源码

def on_post(self, req, resp, *args, **kwargs):
        data = self.deserialize(req.context['doc'] if 'doc' in req.context else None)
        data, errors = self.clean(data)
        if errors:
            result = {'errors': errors}
            status_code = falcon.HTTP_BAD_REQUEST
            self.render_response(result, req, resp, status_code)
            return

        try:
            with self.session_scope(self.db_engine) as db_session:
                result = self.create(req, resp, data, db_session=db_session)
        except IntegrityError:
            raise HTTPConflict('Conflict', 'Unique constraint violated')
        except ProgrammingError as err:
            # Cases such as unallowed NULL value should have been checked before we got here (e.g. validate against
            # schema using falconjsonio) - therefore assume this is a UNIQUE constraint violation
            if len(err.orig.args) > 1 and err.orig.args[1] == self.VIOLATION_UNIQUE:
                raise HTTPConflict('Conflict', 'Unique constraint violated')
            raise
        status_code = falcon.HTTP_CREATED

        self.render_response(result, req, resp, status_code)