Django url link error Reverse for 'category' with keyword arguments '{'category.id': 1}' not found. 1 pattern

Im trying to create a product filter, filtering it by category, so I decided to send the category id trough an URL and then filter all products by the specified ID, but im getting troubles to implement it, please healp.

Reverse for 'category' with keyword arguments '{'category.id': 1}' not found. 1 pattern(s) tried: ['category/<int:category\\.id\\Z']

Views

def category(request, category_id):
    products = Product.objects.filter(category=category_id)
    return

 render(request, 'product/category.html', {'products': products})

Model

class Category(models.Model):
    name = models.CharField(max_length=255, unique=False, blank=True)
    slug = models.SlugField(unique=True)

    def __str__(self):
        return self.slug

    def get_absolute_url(self):
        return reverse("product:category", kwargs={"category.id": self.id})

Urls

urlpatterns = [
    path('', views.index, name="index"),
    path('detail/<int:product_id', views.detail, name="detail"),

    path('category/<int:category.id', views.category, name="category")
]

HTML Template, I tried two ways,none of them worked:

{% for category in categories %}
{{category.id}}
<a href="{{category.get_absolute_url}}"></a>
{% comment %}
<a href="{% url 'product:category' category_id=category.id %}"></a>
{% endcomment %}
{% endfor %}

Product Model

class Product(models.Model):
    name = models.CharField(max_length=255, unique=False, blank=True)
    slug = models.SlugField(unique=True)
    category = models.ForeignKey(
        Category, on_delete=models.CASCADE, unique=False)

urlpatterns = [
    path('', views.index, name="index"),
    path('detail/<int:product_id>/', views.detail, name="detail"),

    path('category/<int:category_id>/', views.category, name="category")
]