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from django.contrib import messages

from django.contrib.auth.decorators import login_required

from django.contrib.auth.mixins import LoginRequiredMixin

from django.shortcuts import get_object_or_404, redirect, render

from django.utils.translation import ugettext_lazy as _

from django.views.generic import ListView

from bootcamp.notifications.models import Notification

class NotificationUnreadListView(LoginRequiredMixin, ListView):

"""Basic ListView implementation to show the unread notifications for

the actual user"""

model = Notification

context_object_name = 'notification_list'

template_name = 'notifications/notification_list.html'

def get_queryset(self, **kwargs):

return self.request.user.notifications.unread()

@login_required

def mark_all_as_read(request):

"""View to call the model method which marks as read all the notifications

directed to the actual user."""

request.user.notifications.mark_all_as_read()

_next = request.GET.get('next')

messages.add_message(

request, messages.SUCCESS,

_(f'All notifications to {request.user.username} have been marked as read.'))

if _next:

return redirect(_next)

return redirect('notifications:unread')

@login_required

def mark_as_read(request, slug=None):

"""View to call the model method which mark as read the provided

notification."""

if slug:

notification = get_object_or_404(Notification, slug=slug)

notification.mark_as_read()

messages.add_message(

request, messages.SUCCESS,

_(f'The notification {notification.slug} has been marked as read.'))

_next = request.GET.get('next')

if _next:

return redirect(_next)

return redirect('notifications:unread')

@login_required

def get_latest_notifications(request):

notifications = request.user.notifications.get_most_recent()

return render(request,

'notifications/most_recent.html',

{'notifications': notifications})

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