'Solution_taxi-service-user-form-and-volidation'

taxi/forms.py

@@ -10,6 +10,7 @@ class CarForm(forms.ModelForm):
     drivers = forms.ModelMultipleChoiceField(
         queryset=get_user_model().objects.all(),
         widget=forms.CheckboxSelectMultiple,
+        required=False
     )
 
     class Meta:

taxi/urls.py

@@ -16,6 +16,7 @@
     DriverCreateView,
     DriverDeleteView,
     DriverLicenseUpdateView,
+    toggle_assign_to_car,
 )
 
 urlpatterns = [
@@ -64,6 +65,12 @@
         "cars/<int:pk>/delete/",
         CarDeleteView.as_view(), name="car-delete"
     ),
+    path(
+        "cars/<int:pk>/toggle-assign/",
+        toggle_assign_to_car,
+        name="toggle-car-assign",
+    ),
+
     path(
         "drivers/",
         DriverListView.as_view(),

taxi/views.py

@@ -1,4 +1,5 @@
 from django.contrib.auth.decorators import login_required
+from django.http import HttpResponseRedirect
 from django.shortcuts import render
 from django.urls import reverse_lazy
 from django.views import generic
@@ -105,3 +106,15 @@ class DriverLicenseUpdateView(LoginRequiredMixin, generic.UpdateView):
 class DriverDeleteView(LoginRequiredMixin, generic.DeleteView):
     model = Driver
     success_url = reverse_lazy("taxi:driver-list")
+
+
+@login_required
+def toggle_assign_to_car(request, pk):
+    driver = Driver.objects.get(id=request.user.id)
+    if (
+        Car.objects.get(id=pk) in driver.cars.all()
+    ):  # probably could check if car exists
+        driver.cars.remove(pk)
+    else:
+        driver.cars.add(pk)
+    return HttpResponseRedirect(reverse_lazy("taxi:car-detail", args=[pk]))