reviewers/templates/reviewers/extensions_review_detail.html

@@ -80,6 +80,20 @@
 <section id="activity" class="mt-4">
   <hr class="my-4">
   <h2>Activity</h2>
+  {% if request.user.is_authenticated %}
+    <form method="post" action="{% url 'reviewers:approval-follow' extension.slug %}">
+      {% csrf_token %}
+      <button type="submit" class="btn">
+      {% if user_is_following %}
+        <i class="i-bell-off"></i> Unsubscribe
+        <input type="hidden" name="follow" value="" />
+      {% else %}
+        <i class="i-bell"></i> Subscribe
+        <input type="hidden" name="follow" value="True" />
+      {% endif %}
+      </button>
+    </form>
+  {% endif %}
 
   {% if review_activity %}
   <ul class="activity-list">

reviewers/urls.py

@@ -15,4 +15,9 @@ urlpatterns = [
         views.ExtensionsApprovalFormView.as_view(),
         name='approval-comment',
     ),
+    path(
+        'approval-queue-follow/<slug:slug>/',
+        views.ExtensionsApprovalFollowView.as_view(),
+        name='approval-follow',
+    ),
 ]

reviewers/views.py

@@ -1,12 +1,14 @@
 from collections import defaultdict
 import logging
 
+from actstream.actions import follow, is_following, unfollow
 from django.contrib.auth.mixins import LoginRequiredMixin
 from django.views.generic.list import ListView
 from django.views.generic import DetailView, FormView
-from django.shortcuts import reverse
+from django.shortcuts import redirect, reverse
 import django.forms
 
+from constants.activity import Flag
 from extensions.models import Extension
 from reviewers.forms import CommentForm
 from reviewers.models import ApprovalActivity
@@ -134,6 +136,7 @@ class ExtensionsApprovalDetailView(DetailView):
             form.fields['type'].widget.choices = choices
             if len(choices) == 1:
                 form.fields['type'].widget = django.forms.HiddenInput()
+            ctx['user_is_following'] = is_following(user, self.object, flag=Flag.REVIEWER)
         return ctx
 
 
@@ -158,3 +161,16 @@ class ExtensionsApprovalFormView(LoginRequiredMixin, FormView):
         form.save()
         self.approve_if_allowed(form)
         return super().form_valid(form)
+
+
+class ExtensionsApprovalFollowView(LoginRequiredMixin, DetailView):
+    model = Extension
+
+    def post(self, request, *args, **kwargs):
+        extension = self.get_object()
+        user = request.user
+        if request.POST.get('follow'):
+            follow(user, extension, flag=Flag.REVIEWER)
+        else:
+            unfollow(user, extension, flag=Flag.REVIEWER)
+        return redirect(extension.get_review_url() + '#activity')