mirror of
https://gitlab.crans.org/bde/nk20
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108 lines
4.6 KiB
Python
108 lines
4.6 KiB
Python
# Copyright (C) 2018-2020 by BDE ENS Paris-Saclay
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# SPDX-License-Identifier: GPL-3.0-or-later
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from datetime import date
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from django.contrib.auth.mixins import LoginRequiredMixin
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from django.core.exceptions import PermissionDenied
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from django.db.models import Q
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from django.forms import HiddenInput
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from django.utils.translation import gettext_lazy as _
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from django.views.generic import UpdateView, TemplateView, CreateView
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from member.models import Membership
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from .backends import PermissionBackend
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from .models import Role
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from .tables import RightsTable
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class ProtectQuerysetMixin:
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"""
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This is a View class decorator and not a proper View class.
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Ensure that the user has the right to see or update objects.
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Display 404 error if the user can't see an object, remove the fields the user can't
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update on an update form (useful if the user can't change only specified fields).
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"""
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def get_queryset(self, **kwargs):
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qs = super().get_queryset(**kwargs)
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return qs.filter(PermissionBackend.filter_queryset(self.request.user, qs.model, "view")).distinct()
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def get_form(self, form_class=None):
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form = super().get_form(form_class)
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if not isinstance(self, UpdateView):
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return form
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# If we are in an UpdateView, we display only the fields the user has right to see.
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# No worry if the user change the hidden fields: a 403 error will be performed if the user tries to make
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# a custom request.
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# We could also delete the field, but some views might be affected.
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for key in form.base_fields:
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if not PermissionBackend.check_perm(self.request.user, "wei.change_weiregistration_" + key, self.object):
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form.fields[key].widget = HiddenInput()
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return form
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class ProtectedCreateView(LoginRequiredMixin, CreateView):
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"""
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Extends a CreateView to check is the user has the right to create a sample instance of the given Model.
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If not, a 403 error is displayed.
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"""
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def get_sample_object(self):
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"""
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return a sample instance of the Model.
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It should be valid (can be stored properly in database), but must not collide with existing data.
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"""
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raise NotImplementedError
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def dispatch(self, request, *args, **kwargs):
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# Check that the user is authenticated before that he/she has the permission to access here
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if not request.user.is_authenticated:
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return self.handle_no_permission()
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model_class = self.model
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# noinspection PyProtectedMember
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app_label, model_name = model_class._meta.app_label, model_class._meta.model_name.lower()
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perm = app_label + ".add_" + model_name
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if not PermissionBackend.check_perm(request.user, perm, self.get_sample_object()):
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raise PermissionDenied(_("You don't have the permission to add an instance of model "
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"{app_label}.{model_name}.").format(app_label=app_label, model_name=model_name))
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return super().dispatch(request, *args, **kwargs)
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class RightsView(TemplateView):
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template_name = "permission/all_rights.html"
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extra_context = {"title": _("Rights")}
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def get_context_data(self, **kwargs):
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context = super().get_context_data(**kwargs)
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context["title"] = _("All rights")
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roles = Role.objects.all()
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context["roles"] = roles
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if self.request.user.is_authenticated:
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active_memberships = Membership.objects.filter(user=self.request.user,
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date_start__lte=date.today(),
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date_end__gte=date.today()).all()
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else:
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active_memberships = Membership.objects.none()
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for role in roles:
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role.clubs = [membership.club for membership in active_memberships if role in membership.roles.all()]
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if self.request.user.is_authenticated:
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special_memberships = Membership.objects.filter(
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date_start__lte=date.today(),
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date_end__gte=date.today(),
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).filter(roles__in=Role.objects.filter(~(Q(name="Adhérent BDE")
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| Q(name="Adhérent Kfet")
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| Q(name="Membre de club")
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| Q(name="Adhérent WEI")
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| Q(name="1A")))).order_by("club", "user__last_name")\
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.distinct().all()
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context["special_memberships_table"] = RightsTable(special_memberships)
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return context
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