| Subclassing Flask | |
| ================= | |
| The :class:`~flask.Flask` class is designed for subclassing. | |
| For example, you may want to override how request parameters are handled to preserve their order:: | |
| from flask import Flask, Request | |
| from werkzeug.datastructures import ImmutableOrderedMultiDict | |
| class MyRequest(Request): | |
| """Request subclass to override request parameter storage""" | |
| parameter_storage_class = ImmutableOrderedMultiDict | |
| class MyFlask(Flask): | |
| """Flask subclass using the custom request class""" | |
| request_class = MyRequest | |
| This is the recommended approach for overriding or augmenting Flask's internal functionality. | |