rest\_condition
===============

Complex permissions flow for `django-rest-framework`_.

Installation
------------

The easiest way to install the latest version is by using
pip/easy\_install to pull it from PyPI:

::

pip install rest_condition

You may also use Git to clone the repository from Github and install it
manually:

::

git clone https://github.com/caxap/rest_condition.git
python setup.py install

Example
-------

.. code:: python

from rest_framework.response import Response
from rest_framework.views import APIView
from rest_framework.permissions import BasePermission
from rest_condition import ConditionalPermission, C, And, Or, Not


class Perm1(BasePermission):

def has_permission(self, request, view):
# You permissions check here
return True


class Perm2(BasePermission):

def has_permission(self, request, view):
# You permissions check here
return False


# Example of possible expressions
expr1 = Or(Perm1, Perm2) # same as: C(Perm1) | Perm2
expr2 = And(Perm1, Perm2) # same as: C(Perm1) & Perm2
expr3 = Not(Perm1) # same as: ~C(Perm1)
expr4 = And(Not(Perm1), Or(Perm1, Not(Perm2))) # same as: ~C(Perm1) & (C(Perm1) | ~C(Perm2))

# Using expressions in API views
class ExampleView(APIView):
permission_classes = [Or(And(Perm1, Perm2), Not(Perm2)), ]
# Or just simple:
# permission_classes = [C(Perm1) & Perm2 | ~C(Perm2), ]

def get(self, request, format=None):
content = {'status': 'request was permitted'}
return Response(content)


class OtherExampleView(ExampleView):
# Using ConditionalPermission class
permission_classes = [ConditionalPermission, ]
permission_condition = (C(Perm1) & Perm2) | (~C(Perm1) & ~C(Perm2))

License
-------

The MIT License (MIT)

Contributed by `Max Kamenkov`_

.. _django-rest-framework: http://django-rest-framework.org/
.. _Maxim Kamenkov: https://github.com/caxap/


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