Re: How to use ModelChoiceField? I whould like to filter the output from a field form.

no idea how you do this with a CreateView but with a simple view function you have a request object:

https://docs.djangoproject.com/en/3.0/topics/http/views/#a-simple-view

this thread is about passing a variable into from the view function to a form:

https://groups.google.com/forum/#!searchin/django-users/I$20think$20in$20your$20view$20modulesView()$20%7Csort:date/django-users/AtTDAn-M7_E/V7sx7piSCQAJ

Antje

On 4/28/20 6:56 PM, Sergei Sokov wrote:

forms.py
class OrderForm(forms.ModelForm):
    class Meta:
        model = Order
    name_job = forms.ModelMultipleChoiceField(queryset=None)
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        qs = TypJob.objects.filter(author__id=request.user.id)

views.py

class OrderNewBigPrintView(LoginRequiredMixin, CustomSuccessMessageMixin, CreateView):
    model = Order
    template_name = 'new_order_bp.html'
    form_class = OrderForm
    success_url = reverse_lazy('orders')
    success_msg = 'Ok'

models.py
class TypJob(models.Model):
 author = models.ForeignKey(User, on_delete = models.CASCADE, verbose_name='author', null=True)
 name_job = models.CharField('name job', max_length=200)


class Order(models.Model):
 author = models.ForeignKey(User, on_delete = models.CASCADE, verbose_name='author', blank=True, null=True)
 number_order = models.CharField('number of order', max_length=100)
 date_create = models.DateTimeField(auto_now=True)
 name = models.ForeignKey(Customer, on_delete = models.CASCADE, verbose_name='customer', null=True)
 name_order = models.CharField('name of order', max_length=200)

вторник, 28 апреля 2020 г., 18:41:25 UTC+2 пользователь Antje Kazimiers написал:

the form doesn't know the request only the view does. how does your view function look like?

On 4/28/20 5:57 PM, Sergei Sokov wrote:

я не совсем понял

    class Meta:

        model = Order

        fields = '__all__'

    name_job = forms.ModelMultipleChoiceField(queryset=None)

    def __init__(self, *args, **kwargs):

        super().__init__(*args, **kwargs)

        qs = TypJob.objects.filter(author__id=request.user.id)

        self.fields['name_job'].queryset = qs

I have error

'NoneType' object has no attribute '_prefetch_related_lookups'

вторник, 28 апреля 2020 г., 17:19:01 UTC+2 пользователь hend hend написал:

user.id надо брать из request объекта в контроллере request.user.id. В том же контроллере метод get_initial() позволяет инициализировать поля формы(указанной в аттрибуте "form_class")контроллера.

Например:

    def get_initial(self):

            # поле category формы будет установлено в результат выборки по ключу

            self.initial["category"] = Category.objects.get(pk=self.c_id)

        return self.initial.copy() # 

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