Django: Method to get url of images-CodePudding

Im working on an website currently i would like to switch from a class Product containing the images to following:

models.py:

class Product(models.Model):
    name    = models.CharField(max_length=60)
    price   = models.DecimalField(max_digits=10, decimal_places=2)
    
    # Digital Products do not need shipping
    digital = models.BooleanField(default=False, null=True, blank=False)
    # now being handled in ProductImage:
    # image   = models.ImageField(null=True, blank=True)

    @property
    def imageURL(self):
        try:
            url = self.image.url
        # get placeholder if something does not work
        except: 
            url = '/images/placeholder.png'
        return url
    

class ProductImage(models.Model):
    
    product     = models.ForeignKey(Product, related_name="images", on_delete=models.SET_DEFAULT, default=None, null=True)
    image1      = models.ImageField(null=True, blank=True)
    image2      = models.ImageField(null=True, blank=True)
    image3      = models.ImageField(null=True, blank=True)
    image4      = models.ImageField(null=True, blank=True)
    image5      = models.ImageField(null=True, blank=True)
    image6      = models.ImageField(null=True, blank=True)

i used to get the url of the single image (which works fine if image is an attribute of Product) as follows:

view.html:

{% for product in products %}    
    <img  src="{{ product.imageURL }}">
{% endfor %}

view.py:

def store_view(request):
    # some code
    "product":Product.objects.all()
    context.update({"products":products})
    return render(request, "view.html", context)

Is there a way of getting the images through the ForeignKey relation? (For example by modification of the above method imageURL)?

I have tried:

models.py:

class Product(models.Model)
    # same as above
    
    @property
    def imageURL(self):
        try:
            url = self.images.image1.url
        # get placeholder if something does not work
        except:
            url = '/images/placeholder.png'
        return url

but this raises an AttributeError: 'RelatedManager' object has no attribute 'image1'. Other possible solutions are appreciated as well.

CodePudding user response：

It is like that because self.images returns set of ProductImage objects. Even it is only one, you will have QuerySet object with one ProductImage object, like:

<QuerySet [<ProductImage object (1)>]>

You can change relation to OneToOneField if you don't plan to have more related ProductImage objects to Product. Then you can relate simply like you have tried:

class ProductImage(models.Model):
    
    product     = models.OneToOneField(Product, related_name="images", on_delete=models.SET_DEFAULT, default=None, null=True)
    image1      = models.ImageField(null=True, blank=True)
    ...

CodePudding user response：

in urls.py

urlpatterns = [

...

]   static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)