Sith/core/views/__init__.py
2016-08-07 20:45:06 +02:00

103 lines
3.5 KiB
Python

from django.shortcuts import render
from django.http import HttpResponseForbidden, HttpResponseNotFound
from django.core.exceptions import PermissionDenied, ObjectDoesNotExist
from django.views.generic.base import View
from django.contrib.auth.forms import AuthenticationForm
from core.models import Group
def forbidden(request):
return HttpResponseForbidden(render(request, "core/403.jinja", context={'next': request.path, 'form':
AuthenticationForm()}))
def not_found(request):
return HttpResponseNotFound(render(request, "core/404.jinja"))
def can_edit_prop(obj, user):
if obj is None or user.is_owner(obj):
return True
return False
def can_edit(obj, user):
if obj is None or user.can_edit(obj):
return True
return can_edit_prop(obj, user)
def can_view(obj, user):
if obj is None or user.can_view(obj):
return True
return can_edit(obj, user)
class CanCreateMixin(View):
"""
This view is made to protect any child view that would create an object, and thus, that can not be protected by any
of the following mixin
"""
def form_valid(self, form):
obj = form.instance
if can_edit_prop(obj, self.request.user):
return super(CanCreateMixin, self).form_valid(form)
raise PermissionDenied
class CanEditPropMixin(View):
"""
This view is made to protect any child view that would be showing some properties of an object that are restricted
to only the owner group of the given object.
In other word, you can make a view with this view as parent, and it would be retricted to the users that are in the
object's owner_group
"""
def dispatch(self, request, *arg, **kwargs):
res = super(CanEditPropMixin, self).dispatch(request, *arg, **kwargs)
if hasattr(self, 'object'):
obj = self.object
elif hasattr(self, 'object_list'):
obj = self.object_list[0] if self.object_list else None
if can_edit_prop(obj, self.request.user):
return res
try: # Always unlock when 403
self.object.unset_lock()
except: pass
raise PermissionDenied
class CanEditMixin(View):
"""
This view makes exactly the same thing as its direct parent, but checks the group on the edit_groups field of the
object
"""
def dispatch(self, request, *arg, **kwargs):
res = super(CanEditMixin, self).dispatch(request, *arg, **kwargs)
if hasattr(self, 'object'):
obj = self.object
elif hasattr(self, 'object_list'):
obj = self.object_list[0] if self.object_list else None
if can_edit(obj, self.request.user):
return res
try: # Always unlock when 403
self.object.unset_lock()
except: pass
raise PermissionDenied
class CanViewMixin(View):
"""
This view still makes exactly the same thing as its direct parent, but checks the group on the view_groups field of
the object
"""
def dispatch(self, request, *arg, **kwargs):
res = super(CanViewMixin, self).dispatch(request, *arg, **kwargs)
if hasattr(self, 'object'):
obj = self.object
elif hasattr(self, 'object_list'):
obj = self.object_list[0] if self.object_list else None
if can_view(obj, self.request.user):
return res
try: # Always unlock when 403
self.object.unset_lock()
except: pass
raise PermissionDenied
from .user import *
from .page import *
from .site import *
from .group import *