remove devices from a lot

dashboard/templates/unassigned_devices.html

@@ -50,7 +50,7 @@
     </tbody>
     {% endfor %}
   </table>
-  <button type="submit" value="/lot/devices/remove" name="url">Remove</button> <button type="submit" name="url" value="{% url 'lot:add_devices' %}">add</button>
+  <button type="submit" value="{% url 'lot:del_devices' %}" name="url">Remove</button> <button type="submit" name="url" value="{% url 'lot:add_devices' %}">add</button>
   </form>
 </div>
 {% endblock %}

lot/forms.py

@@ -15,8 +15,13 @@ class LotsForm(forms.Form):
     def save(self, commit=True):
         if not commit:
             return
-        # import pdb; pdb.set_trace()
         for dev in self.devices:
             for lot in self._lots:
                 lot.devices.add(dev.id)
         return
+
+    def remove(self):
+        for dev in self.devices:
+            for lot in self._lots:
+                lot.devices.remove(dev.id)
+        return

lot/urls.py

@@ -7,4 +7,5 @@ urlpatterns = [
     path("add/", views.NewLotView.as_view(), name="add"),
     path("edit/<int:pk>/", views.EditLotView.as_view(), name="edit"),
     path("add/devices/", views.AddToLotView.as_view(), name="add_devices"),
+    path("del/devices/", views.DelToLotView.as_view(), name="del_devices"),
 ]

lot/views.py

@@ -87,3 +87,14 @@ class AddToLotView(DashboardView, FormView):
         return response
 
 
+class DelToLotView(AddToLotView):
+    title = _("Remove from lots")
+    breadcrumb = "lot / remove from lots"
+
+    def form_valid(self, form):
+        form.devices = self.get_session_devices()
+        form.remove()
+        response = super().form_valid(form)
+        return response
+
+