L'objet de formulaire n'a pas d'attribut 'save_m2m' django

Question

J'ai des problèmes de forme dans les vues, j'ai créé CBV CreateView. Donc ça marche bien et ça économise le formulaire mais j'ai l'erreur 'ProductForm' l'objet n'a pas d'attribut 'save_m2m, si je n'utilise pas form.save_m2m il n'ajoutera pas d'images à mon produit, mais l'ajoutera au média.

Nous avons donc ici model.py

class Product(models.Model): 
    class Meta: 
     verbose_name = 'Продукт' 
     verbose_name_plural = 'Продукты' 

    shop = models.ForeignKey(Shop, verbose_name='Название магазина') 
    category = models.ForeignKey(Category, verbose_name='Название категории') 
    title = models.CharField(max_length=255, verbose_name='Название товара') 
    slug = models.SlugField(_("Название на транслите"), max_length=50, unique=True, blank=True, null=True) 
    price = models.DecimalField(null=True, blank=True, verbose_name='Цена', decimal_places=0, max_digits=10) 
    sell_count = models.PositiveIntegerField(_("Количество продаж"), default=0, null=True, blank=True) 
    discount = models.PositiveIntegerField(null=True, blank=True, verbose_name='Скидка') 
    currency = models.CharField(null=True, max_length=255, verbose_name='Валюта', default='сом') 
    quantity = models.IntegerField(verbose_name='Количество', default=0) 
    delivery_type = models.CharField(verbose_name='Вид доставки', choices=DELIVERY_TYPES, default='self', 
            max_length=255) 
    delivery_cost = models.FloatField(verbose_name='Стоимость доставки', default=0, null=True, blank=True) 
    # settings = models.ManyToManyField('ProductSettings', verbose_name='Характеристика') 
    availability = models.CharField(_("Наличие"), max_length=100, choices=AVAILABILITY_TYPES, default='available') 
    published = models.BooleanField(default=True) 
    short_description = models.TextField(max_length=300, null=True, blank=True, 
             verbose_name='Короткое описание товара до 300 символов') 
    long_description = RichTextUploadingField(null=True, blank=True, verbose_name='Полное описание') 
    images = models.ManyToManyField('Media', verbose_name='Изображения продукта', blank=True) 
    objects = ProductPublishedManager() 



class Media(models.Model): 
    class Meta: 
     verbose_name = "Изображение" 
     verbose_name_plural = "Изображения" 

    image = models.ImageField(upload_to='images') 

Ici j'ai forms.py

class ProductForm(forms.ModelForm): 
    class Meta: 
     model = Product 
     exclude = ['slug', 'objects', 'sell_count'] 

    removed_images = forms.CharField(required=False) 
    uploaded_images = forms.CharField(required=False) 

    def __init__(self, *args, **kwargs): 
     self.user = kwargs['initial']['user'] 
     super(ProductForm, self).__init__(*args, **kwargs) 
     self.fields['shop'].queryset = Shop.objects.filter(user__in=[self.user.id]) 
     for field in iter(self.fields): 
      self.fields[field].widget.attrs.update({ 
       'class': 'form-control' 
      }) 

Et voici views.py

class ProductCreateView(LoginRequiredMixin, AddProductMixin, CreateView): 
    form_class = ProductForm 
    template_name = 'product/product_form.html' 

    def get_success_url(self): 
     return reverse('shops:detail', args=(self.object.shop.slug,)) 

    def get_initial(self): 
     return {'shop': Shop.objects.get(slug=self.kwargs['slug']), 
       'user': self.request.user 
       } 

    def form_valid(self, form, **kwargs): 
     product = form.instance 
     product.slug = slugify(form.instance.title) 
     product.shop = Shop.objects.get(slug=self.kwargs['slug']) 
     form.save() 
     if form.cleaned_data['uploaded_images']: 
      if ',' in form.cleaned_data['uploaded_images']: 
       for item in form.cleaned_data['uploaded_images'].split(','): 
        try: 
         media = Media.objects.get(id=int(item)) 
         product.images.add(media) 
        except ObjectDoesNotExist: 
         pass 
      else: 
       try: 
        media = Media.objects.get(id=int(form.cleaned_data['uploaded_images'])) 
        product.images.add(media) 
       except ObjectDoesNotExist: 
        print('error') 
     form.save_m2m() 
     if form.cleaned_data['removed_images']: 
      for item in form.cleaned_data['removed_images'].split(','): 
       try: 
        media = Media.objects.get(id=int(item)) 
        image_path = MEDIA_ROOT + '/' + media.image.name 
        os.remove(image_path) 
        media.delete() 
       except ObjectDoesNotExist: 
        pass 

     return super(ProductCreateView, self).form_valid(form) 

Answer 1

Tentez de modifier votre point de vue comme celui-ci ,

def form_valid(self, form, **kwargs): 
    product = form.save(commit=False) 
    product.slug = slugify(form.instance.title) 
    product.shop = Shop.objects.get(slug=self.kwargs['slug']) 
    product.save() 
    if form.cleaned_data['uploaded_images']: 
     if ',' in form.cleaned_data['uploaded_images']: 
      for item in form.cleaned_data['uploaded_images'].split(','): 
       try: 
        media = Media.objects.get(id=int(item)) 
        product.images.add(media) 
       except ObjectDoesNotExist: 
        pass 
     else: 
      try: 
       media = Media.objects.get(id=int(form.cleaned_data['uploaded_images'])) 
       product.images.add(media) 
      except ObjectDoesNotExist: 
    # **Edited here**.. 
    product.save_m2m() 
    if form.cleaned_data['removed_images']: 
     for item in form.cleaned_data['removed_images'].split(','): 
      try: 
       media = Media.objects.get(id=int(item)) 
       image_path = MEDIA_ROOT + '/' + media.image.name 
       os.remove(image_path) 
       media.delete() 
      except ObjectDoesNotExist: 
       pass 

    return super(ProductCreateView, self).form_valid(form) 

Answer 2

Essayez comme ça

form.save(commit=False) 
form.save_m2m() 

Answer 3

i ve rewrote my model with adding new varialble to Media. And in view i ai changé de

product.images.add(media) 

à

product.media_set.add(media) 

et Mon modèle

class Media(models.Model): 
class Meta: 
    verbose_name = "Изображение" 
    verbose_name_plural = "Изображения" 

image = models.ImageField(upload_to='images') 
products = models.ManyToManyField(Product) 

def __str__(self): 
    return self.image.url 

in class Produit i supprimé var images