.. _topics-user_application: ================ User Application ================ Tryton provides a way to connect URL rules to an callable endpoint using the decorator method ``route`` of the ``trytond.application.app`` instance. This allows you to define a custom API based on HTTP that can be used to create a specific user application. The decorator takes as first parameter a string which follow the `Rule Format`_ of Werkzeug and as second parameter sequence of HTTP methods. Example:: from trytond.application import app @app.route('/hello', methods=['GET']) def hello(request): return 'Hello world' .. _Rule Format: http://werkzeug.pocoo.org/docs/latest/routing/#rule-format The following converter is added by Tryton: - ``base64``: This converter accepts any Base64_ string and transforms it into its corresponding bytes value. .. _Base64: https://en.wikipedia.org/wiki/Base64 Tryton also provides some wrappers in ``trytond.protocols.wrappers`` to ease the creation of such route. - ``set_max_request_size(size)``: change the default limit of the request to the size in bytes. - ``allow_null_origin``: allow requests which have their ``Origin`` set to ``null``. - ``with_pool``: which takes the first parameter as database name and replace it by the corresponding instance of the :ref:`Pool `. - ``with_transaction([readonly])``: which starts a :class:`Transaction` using the :ref:`Pool ` from ``with_pool``. If ``readonly`` is not set, the transaction will not be readonly for ``POST``, ``PUT``, ``DELETE`` and ``PATCH`` methods and readonly for all others. - ``user_application(name[, json])``: which set the :attr:`Transaction.user` from the ``Authorization`` header using the type ``bearer`` and a valid key for the named user application. User Application Key ==================== Tryton also provides a easy way to manage access to user application using keys per named application. A key is created with a ``POST`` request on the ``URL`` ``//user/application/`` which returns the key. The request must contain as data a json object with the keys: - ``user``: the user login - ``application``: the name of the application After the creation, the key must be validated by the user from the preferences of a Tryton client. A key can be deleted with a ``DELETE`` request on the same ``URL``. The request must contain as data a json object with the keys: - ``user``: the user login - ``key``: the key to delete - ``application``: the name of the application of the key