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tryton/doc/topics/user_application.rst
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2020-11-29 11:35:29 +00:00

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.. _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.
- ``with_pool``: which takes the first parameter as database name and
replace it by the corresponding instance of the :ref:`Pool <ref-pool>`.
- ``with_transaction([readonly])``: which starts a :class:`Transaction`
using the :ref:`Pool <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``
``/<database_name>/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