Django foreign key and one-to-many relationship - django

Question

I'm trying to build a basic ecommerce website, as a mean to learning django. I'm trying to build my models, so that there is a Category, a Product and Product Image class to store my data in. This is my models.py:
class Category(models.Model):
name = models.CharField(max_length=200, db_index=True)
slug = models.SlugField(max_length=200, db_index=True, unique=True)
class Meta:
ordering = ('name', )
verbose_name = 'category'
verbose_name_plural = 'categories'
def __str__(self):
return self.name
def get_absolute_url(self):
return reverse('products:product_list_by_category', args=[self.slug])
class Product(models.Model):
category = models.ForeignKey(Category, related_name='products')
name = models.CharField(max_length=200, db_index=True)
slug = models.SlugField(max_length=200, db_index=True)
description = models.TextField(blank=True)
price = models.DecimalField(max_digits=10, decimal_places=2)
stock = models.PositiveIntegerField()
available = models.BooleanField(default=True)
updated_at = models.DateTimeField(auto_now=True)
class Meta:
ordering = ('name', )
index_together = (('id', 'slug'), )
def __str__(self):
return self.name
def get_absolute_url(self):
return reverse('products:product_detail', args=[self.id, self.slug])
class ProductImage(models.Model):
property = models.ForeignKey('Product', related_name='images', on_delete=models.CASCADE)
image = models.ImageField(upload_to='products')
And this is my views.py:
def product_list(request, category_slug=None):
category = None
categories = Category.objects.all()
products = Product.objects.filter(available=True)
product_img = Product.images.all()
if category_slug:
category = get_object_or_404(Category, slug=category_slug)
products = products.filter(category=category)
return render(request, 'products/list.html', {'category': category, 'categories': categories, 'products': products, 'product_img': product_img})
I've seen similar post here on stack overflow, and have tried to do the same thing, but I still get the following error: AttributeError: 'ReverseManyToOneDescriptor' object has no attribute 'all'
Where am I going wrong here?