return to the previous page after the form view

devices/templates/devices/device_confirm_delete.html

@@ -6,6 +6,11 @@
     <p>Are you sure you want to delete the device "{{ object }}"?</p>
     <button type="submit" class="btn btn-danger">Delete</button>
     <a href="{% url 'device' object.pk %}" class="btn btn-primary">Cancel</a>
+    <input type="hidden" id="previous_page" name="previous_page" value="/previous/page/url">
 </form>
+<script>
+    prev = document.getElementById("previous_page");
+    prev.value = document.referrer;
+</script>
 </div>
 {% endblock %}

devices/templates/devices/device_in_net_confirm_delete.html

@@ -6,6 +6,12 @@
     <p>Are you sure you want to delete the IP "{{ object.ip }}" for "{{ object.device }}"?</p>
     <button type="submit" class="btn btn-danger">Delete</button>
     <a href="{{ view.get_success_url }}" class="btn btn-primary">Cancel</a>
+<input type="hidden" id="previous_page" name="previous_page" value="/previous/page/url">
 </form>
+<script>
+    prev = document.getElementById("previous_page");
+    prev.value = document.referrer;
+</script>
+
 </div>
 {% endblock %}

devices/templates/devices/device_in_net_create.html

@@ -9,6 +9,12 @@
     {{ form|crispy }}
     <button type="submit" class="btn btn-primary">Save</button>
     <a href="{{ view.get_success_url }}" class="btn btn-secondary">Cancel</a>
+    <input type="hidden" id="previous_page" name="previous_page" value="/previous/page/url">
 </form>
+<script>
+    prev = document.getElementById("previous_page");
+    prev.value = document.referrer;
+</script>
+
 </div>
 {% endblock %}

devices/templates/devices/device_in_net_update.html

@@ -17,5 +17,11 @@
 <br>
 <input type="submit" value="Save" class="btn btn-primary">
 <a href="{{ view.get_success_url }}" class="btn btn-secondary">Cancel</a>
+<input type="hidden" id="previous_page" name="previous_page" value="/previous/page/url">
 </form>
+<script>
+    prev = document.getElementById("previous_page");
+    prev.value = document.referrer;
+</script>
+
 {% endblock %}

devices/templates/devices/warranty_confirm_delete.html

@@ -6,6 +6,11 @@
     <p>Are you sure you want to delete the warranty for "{{ object }}"?</p>
     <button type="submit" class="btn btn-danger">Delete</button>
     <a href="{{ view.get_success_url }}" class="btn btn-primary">Cancel</a>
+    <input type="hidden" id="previous_page" name="previous_page" value="/previous/page/url">
 </form>
+<script>
+    prev = document.getElementById("previous_page");
+    prev.value = document.referrer;
+</script>
 </div>
 {% endblock %}

devices/templates/devices/warranty_create.html

@@ -9,6 +9,12 @@
     {{ form|crispy }}
     <button type="submit" class="btn btn-primary">Save</button>
     <a href="{{ view.get_success_url }}" class="btn btn-secondary">Cancel</a>
+    <input type="hidden" id="previous_page" name="previous_page" value="/previous/page/url">
 </form>
+<script>
+    prev = document.getElementById("previous_page");
+    prev.value = document.referrer;
+</script>
+
 </div>
 {% endblock %}

devices/templates/devices/warranty_update.html

@@ -17,5 +17,11 @@
 <br>
 <input type="submit" value="Save" class="btn btn-primary">
 <a href="{{ view.get_success_url }}" class="btn btn-secondary">Cancel</a>
+<input type="hidden" id="previous_page" name="previous_page" value="/previous/page/url">
 </form>
+<script>
+    prev = document.getElementById("previous_page");
+    prev.value = document.referrer;
+</script>
+
 {% endblock %}

devices/views.py

@@ -115,7 +115,7 @@ class WarrantyCreateView(LoginRequiredMixin, CreateView):
     template_name = 'devices/warranty_create.html'
 
     def get_success_url(self):
-        return reverse('device', args=(self.kwargs.get('pk'),))
+        return self.request.POST.get('previous_page')
 
     def get_initial(self):
         """
@@ -135,14 +135,14 @@ class WarrantyUpdateView(LoginRequiredMixin, UpdateView):
     template_name = 'devices/warranty_update.html'
 
     def get_success_url(self):
-        return reverse('device', args=(self.object.device.pk,))
+        return self.request.POST.get('previous_page')
 
 
 class WarrantyDeleteView(LoginRequiredMixin, DeleteView):
     model = Warranty
 
     def get_success_url(self):
-        return reverse('device', args=(self.object.device.pk,))
+        return self.request.POST.get('previous_page')
 
 
 class DeviceInNetCreateView(LoginRequiredMixin, CreateView):
@@ -151,7 +151,7 @@ class DeviceInNetCreateView(LoginRequiredMixin, CreateView):
     template_name = 'devices/device_in_net_create.html'
 
     def get_success_url(self):
-        return reverse('device', args=(self.kwargs.get('pk'),))
+        return self.request.POST.get('previous_page')
 
     def get_initial(self):
         """
@@ -170,7 +170,7 @@ class DeviceInNetUpdateView(LoginRequiredMixin, UpdateView):
     template_name = 'devices/device_in_net_update.html'
 
     def get_success_url(self):
-        return reverse('device', args=(self.object.device.pk,))
+        return self.request.POST.get('previous_page')
 
 
 class DeviceInNetDeleteView(LoginRequiredMixin, DeleteView):
@@ -178,4 +178,4 @@ class DeviceInNetDeleteView(LoginRequiredMixin, DeleteView):
     template_name = 'devices/device_in_net_confirm_delete.html'
 
     def get_success_url(self):
-        return reverse('device', args=(self.object.device.pk,))
+        return self.request.POST.get('previous_page')