flask_utils.py 文件源码

def _load_database(self, app, config_value):
        if isinstance(config_value, Database):
            database = config_value
        elif isinstance(config_value, dict):
            database = self._load_from_config_dict(dict(config_value))
        else:
            # Assume a database connection URL.
            database = db_url_connect(config_value)

        if isinstance(self.database, Proxy):
            self.database.initialize(database)
        else:
            self.database = database