Валидация формы

Question

BL4CK R4BBITСәуір 23, 2021, 12:21 Т.Қ.

Валидация формы

'''models.py'''
class Meter(models.Model):
    TARIFF_CHOICES = (
        ('T1', 'Однотарифный'),
        ('T2', 'Двухтарифный'),
        ('T3', 'Трехтарифный'),
    )
    number_meter = models.CharField(max_length=20, unique=True, verbose_name='Номер счетчика')
    croft_meter = models.ForeignKey(Croft, on_delete=models.PROTECT, verbose_name='Участок')
    type_meter = models.ForeignKey(TypeMeter, on_delete=models.PROTECT, verbose_name='Тип счетчика')
    serial_number = models.CharField(max_length=20, blank=True, verbose_name='Серийный номер счетчика')
    seal_number = models.CharField(max_length=20, blank=True, verbose_name='Номер пломбы')
    date_meter = models.DateTimeField(default=datetime.now(), verbose_name='Дата установки')
    type = models.CharField(max_length=50, choices=TARIFF_CHOICES, verbose_name='Вид тарифа')
    last_reading_single = models.PositiveIntegerField(blank=True, null=True, verbose_name='Показания T1')
    last_reading_two = models.PositiveIntegerField(blank=True, null=True, verbose_name='Показания T2')
    last_reading_three = models.PositiveIntegerField(blank=True, null=True, verbose_name='Показания T3')
    is_active = models.BooleanField(default=True, verbose_name='Установлен')

    def __str__(self):
        return self.number_meter

    class Meta:
        verbose_name = 'Счетчик'
        verbose_name_plural = 'Счетчики'
        ordering = ['croft_meter']


class Indication(models.Model):
    meter = models.ForeignKey(Meter, on_delete=models.PROTECT, verbose_name='Счетчик')
    reading_single = models.PositiveIntegerField(default=0, verbose_name='Показания T1')
    reading_two = models.PositiveIntegerField(default=0, blank=True, verbose_name='Показания T2')
    reading_three = models.PositiveIntegerField(default=0, blank=True, verbose_name='Показания T3')
    date_indication = models.DateTimeField(auto_now_add=True, verbose_name='Дата показаний')
    expenditure = models.PositiveIntegerField(default=0, verbose_name='Расход')

    def __str__(self):
        return self.meter.number_meter

    def save(self, *args, **kwargs):
        if not self.id:
            self.expenditure = self.reading_single - self.meter.last_reading_single
            self.meter.last_reading_single = self.reading_single
            self.meter.save()
        return super(Indication, self).save(*args, **kwargs)

    class Meta:
        verbose_name = 'Показания'
        verbose_name_plural = 'Показания'



'''views.py'''
class AddMeterView(SuccessMessageMixin, LoginRequiredMixin, CreateView):
    model = Meter
    template_name = 'crofts/add_meter.html'
    form_class = AddMeterForm
    success_url = reverse_lazy('main:meters_user')

    def get(self, request=None, **kwargs):
        form = self.form_class()
        form.fields['croft_meter'].queryset = Croft.objects.filter(Q(owner=request.user) | Q(grower=request.user))
        return render(request, self.template_name, {'form': form})


class AddIndicationView(SuccessMessageMixin, LoginRequiredMixin, CreateView):
    model = Indication
    template_name = 'main/profile/profile_meters/add_indication.html'
    form_class = AddIndicationForm
    success_url = reverse_lazy('main:meters_user')

    def get(self, request=None, *args, **kwargs):
        form = self.form_class()
        form.fields['meter'].queryset = Meter.objects.filter(Q(croft_meter__owner=request.user) | Q(croft_meter__grower=request.user))
        return render(request, self.template_name, {'form': form})

'''forms.py'''
class AddMeterForm(forms.ModelForm):
    last_reading_single = forms.IntegerField(label='Показания')

    class Meta:
        model = Meter
        fields = ('number_meter', 'croft_meter', 'type_meter', 'serial_number', 'seal_number',
                  'date_meter', 'type', 'last_reading_single')


class AddIndicationForm(forms.ModelForm):
    reading_single = forms.IntegerField(label='Показания')

    class Meta:
        model = Indication
        fields = ('meter', 'reading_single')

Не могу проверить условие для формы
если reading_single < meter.last_reading_single

Рекомендуем хостинг TIMEWEB

Стабильный хостинг, на котором располагается социальная сеть EVILEG. Для проектов на Django рекомендуем VDS хостинг.

Талқылауға жазылыңыз2

Бөлімге жазылу100

Ол саған ұнайды ма? Әлеуметтік желілерде бөлісіңіз!

Шілде 2, 2021, 5:13 Т.Ж.

При работе с двумя формами в одном View я поступил так

class EditMain(View):
    template_name = 'users/edit/main.html'
    title = _('Edit')

    def get(self, request):
        return render(
            request=request,
            template_name=self.template_name,
            context={
                'title': self.title,
                'user_form': forms.UserForm(instance=request.user),
                'profile_form': forms.ProfileForm(user=request.user, instance=request.user.profile)
            }
        )

    def post(self, request):
        user_form = forms.UserForm(data=request.POST, instance=request.user)
        profile_form = forms.ProfileForm(user=request.user, data=request.POST, files=request.FILES,
                                         instance=request.user.profile)

        if user_form.is_valid() and profile_form.is_valid():
            user_form.save()
            profile_form.save()
            return redirect(reverse('users:edit_main'))

        return render(
            request=request,
            template_name=self.template_name,
            context={
                'title': self.title,
                'user_form': user_form,
                'profile_form': profile_form
            }
        )

Уже в методе, где проходит валидация обеих форм, можно провести проверки условий между двумя формами.

Пікірлер

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