Hi,
A couple of pointers:
1. If you are using class based views and want a Form, try using the
FormView - you don't need to write that much code yourself (regarding
validation of form and so on).
2. When you populate your context - you use a form class and not a form
instance - you should be instantiating the form instance itself in the
context (or change to a FormView, that will do it automatically).
Now to the program that you are having - the reason you are getting it is
because you are sending an invalid form to the post method. And the
method then doesn't return anything,
I would write it as follows:
def post(self, request, *args, **kwargs):
list_product = self.form_class(request.POST)
if list_product.is_valid():
list_product.save()
return redirect('products:product') # <- Shouldn't there be an
ID here for going to the newly created product page?
messages.error(request, "There was an error in the form, please correct
it below")
return self.get(request, *args, **kwargs)
Now this is only an example - you will need to handle the fact the the form
need so be added to returned request as well.
Regards,
Andréas
Den fre 8 maj 2020 kl 09:54 skrev cosmos multi <elmasacrad...@gmail.com>:
> I am trying to populate a database, but when I send it it gives me the
> following error didn't return an HttpResponse
>
> this is the form
> class ProductForm(forms.ModelForm):
> name_product = forms.CharField(
> max_length=25,
> widget=forms.TextInput(
> attrs={
> 'class': 'form-control',
> 'id': 'name_product',
> }
> )
> )
>
> def clean_name_product(self):
> name_product = self.cleaned_data.get('name_product')
> if Product.objects.filter(name_product=name_product).exists():
> raise forms.ValidationError('El nombre del producto ya existe')
> return name_product
>
> class Meta:
> model = Product
> fields = (
> 'name_product', 'description', 'price', 'category', 'state', 'image'
> )
> labels = {
> 'name_product': 'Nombre del Producto',
> 'description': 'Descripcion',
> 'price': 'Precio',
> 'category': 'Categoria',
> 'state': 'Estado',
> 'image': 'Imagen del Producto',
> }
> widgets = {
> 'name_product': forms.TextInput(
> attrs={
> 'class': 'form-control',
> 'id': 'name_product',
> }
> ),
> 'description': forms.TextInput(
> attrs={
> 'class': 'form-control',
> 'id': 'description',
> }
> ),
> 'price': forms.NumberInput(
> attrs={
> 'class': 'form-control',
> 'id': 'price',
> }
> ),
> 'category': forms.SelectMultiple(
> attrs={
> 'class': 'custom-select',
> 'id': 'category',
> }
> ),
> 'state': forms.CheckboxInput(),
> }
> and this is the model
>
> class Product(models.Model):
> name_product = models.CharField(max_length=25)
> description = models.CharField(max_length=250)
> price = models.IntegerField()
> category = models.ForeignKey(Category, on_delete=models.CASCADE)
> state = models.BooleanField(default=True)
> image = models.ImageField(upload_to='products/')
> created_at = models.DateField(auto_now=True)
>
> def __str__(self):
> return self.name_product
>
> this is the view
>
> class ProductView(View):
> template_name = 'products/product.html'
> model = Product
> form_class = ProductForm
>
> def get_queryset(self):
> return self.model.objects.filter(state=True)
>
> def get_context_data(self, **kwargs):
> context = {}
> context['product'] = self.get_queryset()
> context['list_product'] = self.form_class
> return context
>
> def get(self, request, *args, **kwargs):
> return render(request, self.template_name, self.get_context_data())
>
> def post(self, request, *args, **kwargs):
> list_product = self.form_class(request.POST)
> if list_product.is_valid():
> list_product.save()
> return redirect('products:product')
>
> the error is. The views products.views.ProductView didn't return an
> httpresponse object. it returned none instead
>
>
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