dashboard: allow unsubscription with token

circle/dashboard/forms.py

@@ -1107,6 +1107,19 @@ class MyProfileForm(forms.ModelForm):
         return value
 
 
+class UnsubscribeForm(forms.ModelForm):
+
+    class Meta:
+        fields = ('email_notifications', )
+        model = Profile
+
+    @property
+    def helper(self):
+        helper = FormHelper()
+        helper.add_input(Submit("submit", _("Change language")))
+        return helper
+
+
 class CirclePasswordChangeForm(PasswordChangeForm):
 
     @property

circle/dashboard/tasks/local_periodic_tasks.py

@@ -26,6 +26,7 @@ from django.utils.translation import ungettext, override
 
 from manager.mancelery import celery
 from ..models import Notification
+from ..views import UnsubscribeFormView
 
 logger = logging.getLogger(__name__)
 
@@ -50,6 +51,9 @@ def send_email_notifications():
             context = {'user': user.profile, 'messages': msgs,
                        'url': (settings.DJANGO_URL.rstrip("/") +
                                reverse("dashboard.views.notifications")),
+                       'unsub': (settings.DJANGO_URL.rstrip("/") + reverse(
+                           "dashboard.views.unsubscribe",
+                           args=[UnsubscribeFormView.get_token(user)])),
                        'site': settings.COMPANY_NAME}
             subject = settings.EMAIL_SUBJECT_PREFIX + ungettext(
                 "%d new notification",

circle/dashboard/templates/dashboard/notifications/email.txt

@@ -11,3 +11,6 @@
 
 -- 
 {{site}} CIRCLE Cloud
+
+{% trans "You can change your subscription without logging in:" %}
+{{unsub}}

circle/dashboard/templates/dashboard/unsubscribe.html

+{% extends "dashboard/base.html" %}
+{% load crispy_forms_tags %}
+{% load i18n %}
+
+{% block content %}
+<div class="body-content">
+    <div class="panel panel-default" style="margin-top: 60px;">
+        <div class="panel-heading">
+            <h3 class="no-margin">
+                {% trans "Subscription settings" %}
+            </h3>
+        </div>
+        <div class="panel-body">
+            <form method="POST" action="">
+                {% csrf_token %}
+                {% crispy form %}
+            </form>
+        </div>
+    </div>
+</div>
+{% endblock %}

circle/dashboard/urls.py

@@ -35,7 +35,7 @@ from .views import (
     TemplateChoose,
     UserCreationView,
     get_vm_screenshot,
-    ProfileView, toggle_use_gravatar,
+    ProfileView, toggle_use_gravatar, UnsubscribeFormView,
 )
 
 urlpatterns = patterns(
@@ -140,6 +140,8 @@ urlpatterns = patterns(
 
     url(r'^profile/$', MyPreferencesView.as_view(),
         name="dashboard.views.profile-preferences"),
+    url(r'^subscribe/(?P<token>.*)/$', UnsubscribeFormView.as_view(),
+        name="dashboard.views.unsubscribe"),
     url(r'^profile/(?P<username>[^/]+)/$', ProfileView.as_view(),
         name="dashboard.views.profile"),
     url(r'^profile/(?P<username>[^/]+)/use_gravatar/$', toggle_use_gravatar),

circle/dashboard/views.py

@@ -59,7 +59,7 @@ from braces.views._access import AccessMixin
 from .forms import (
     CircleAuthenticationForm, DiskAddForm, HostForm, LeaseForm, MyProfileForm,
     NodeForm, TemplateForm, TraitForm, VmCustomizeForm, GroupCreateForm,
-    UserCreationForm, GroupProfileUpdateForm,
+    UserCreationForm, GroupProfileUpdateForm, UnsubscribeForm,
     CirclePasswordChangeForm
 )
 
@@ -2605,6 +2605,26 @@ class MyPreferencesView(UpdateView):
         return self.render_to_response(context)
 
 
+class UnsubscribeFormView(SuccessMessageMixin, UpdateView):
+    model = Profile
+    form_class = UnsubscribeForm
+    template_name = "dashboard/unsubscribe.html"
+    success_message = _("Successfully modified subscription.")
+
+    @classmethod
+    def get_salt(cls):
+        return unicode(cls)
+
+    @classmethod
+    def get_token(cls, user):
+        return signing.dumps(user.pk, salt=cls.get_salt())
+
+    def get_object(self, queryset=None):
+        pk = signing.loads(self.kwargs['token'], salt=self.get_salt(),
+                           max_age=48*3600)
+        return (queryset or self.get_queryset()).get(user_id=pk)
+
+
 def set_language_cookie(request, response, lang=None):
     if lang is None:
         try: