Why does a field with an associated category return None?

Question

Django

The essence of the question is that when calling the model in django views, I want to display the category or categories associated with the product.
The product is associated with the category by such a link:

category = models.ManyToManyField(Category, null=True, blank=True)

View code:

tv= Tovar.objects.filter(id = 1)
for item in tv:
    category = item.category
    print(category.name)

Why is the value None in the console instead of the product category, but in the django admin panel everything works and is displayed?

Answer 1

The Many to Many relationship is designed to store many objects, as its name suggests, not just one. Therefore, the category field stores not one category that has a name field, but a relation manager that allows you to get a set of categories:

tv = Tovar.objects.filter(id = 1)
for item in tv:
    for category in item.category.all():
        print(category.name)