I’m facing a NoReverseMatch error in my Django application when trying to generate URLs for product detail pages. The error message indicates that the URL pattern for ‘product-detail’ with the provided pk and slug is not found. Here are the details of my setup:
NoReverseMatch at /earrings
Reverse for ‘product-detail’ with arguments ‘(’‘, ‘’)’ not found. 1 pattern(s) tried: [‘product/(?P[0-9]+)/(?P[-a-zA-Z0-9_]+)/\Z’]
Model:
class Product(models.Model):
name = models.CharField(max_length=400)
price = models.IntegerField(default=0)
description = RichTextField(null=True, blank=True)
slug = models.SlugField(unique=True, null=True, blank=True, max_length=400)
create_at = models.DateTimeField(null=True, blank=True)
FlavorText = models.CharField(null=True, blank=True, max_length=30)
tags = models.ManyToManyField('Tag', related_name='products', blank=True)
id = models.AutoField(primary_key=True)
def save(self, *args, **kwargs):
# Ensure slug is created from name
if not self.slug:
self.slug = slugify(self.name, allow_unicode=True)
# Check if FlavorText is None and replace it with an empty string
if self.FlavorText is None:
self.FlavorText = ""
super().save(*args, **kwargs)
def get_absolute_url(self):
return reverse('product-detail', kwargs={'pk': self.pk})
def __str__(self):
return f'{self.name} - {self.create_at}'
class Meta:
ordering = ['name', 'price', 'create_at'] # Default ordering
View:
class ProductDetailView(DetailView): # this is the product detailView
model = Product
template_name = 'tehApp/product_detail.html'
context_object_name = 'products'
def get_context_data(self, *args, **kwargs):
context = super(Product, self).get_context_data(*args, **kwargs)
context['Bar'] = Bar.objects.first()
context['Products'] = Product.objects.all()
return context
def get_object(self):
return get_object_or_404(Product, pk=self.kwargs['pk'])
class EarringsPageView(TemplateView): # this is the product list page
model = Product
template_name = 'tehApp/earrings.html'
context_object_name = 'products'
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
earrings_tag = Tag.objects.get(name="Earrings")
sort_order = self.request.GET.get('sort', 'newest')
all_products = self.get_sorted_products(earrings_tag, sort_order)
# Debugging output
for product in all_products:
print(f"Product ID: {product.pk}, Product Name: {product.name}")
paginator = Paginator(all_products, 22) # Initial load of 22 products
page_number = self.request.GET.get('page', 1)
page_obj = paginator.get_page(page_number)
context['Bar'] = Bar.objects.first()
context['Products'] = page_obj
context['all_products'] = all_products
return context
def get_sorted_products(self, earrings_tag, sort_order):
if sort_order == 'pasc':
return Product.objects.filter(tags=earrings_tag).order_by('price')
elif sort_order == 'pdesc':
return Product.objects.filter(tags=earrings_tag).order_by('-price')
elif sort_order == 'newest':
return Product.objects.filter(tags=earrings_tag).order_by('-create_at')
else:
return Product.objects.filter(tags=earrings_tag) # Default sorting
URL:
urlpatterns = [
path('earrings', EarringsPageView.as_view(), name='earrings'),
path('load-more-products/', LoadMoreProductsView.as_view(), name='load_more_products'),
path('<str:pk>/', ProductDetailView.as_view(), name='product-detail'),
]
Template:
{% for product in Products %}
<div class="item" data-name="{{ product.name }}" data-price="{{ product.price }}" data-date="{{ product.create_at|date:"Y-m-d\TH:i:s" }}">
<div class="matchheight">
<div class="relative">
<div class="relative thumbnail">
{% with images=product.images.all %}
{% if images|length > 0 %}
<a href="">
<img width="250px" height="250px" class="" src="{{ images.0.image.url }}" alt="">
</a>
{% endif %}
{% if images|length > 1 %}
<img width="100%" height="100%" class="hidden" src="{{ images.1.image.url }}" alt="">
{% endif %}
{% endwith %}
<a href="{% url 'product-detail' product.pk %}" class="absolute top-0 w-full h-full bg-transparent"></a>
<div class="hidden quickaddtocart">Add to Cart</div>
</div>
<div class="absolute top-0 w-full h-8">
<div class="absolute top-3 left-3">
<i class="cursor-pointer fa-regular fa-heart wishlist-item" style="color: #3b3b3b;"
data-id="{{ product.id }}"></i>
</div>
<div class="itemtipbox">
<small class="itemtip">
{{ product.FlavorText }}
</small>
</div>
</div>
<p class="caption"><a href="{% url 'product-detail' product.pk %}">{{ product.name }}</a></p>
<div class="caption-price">${{ product.price }}</div>
</div>
</div>
</div>
{% endfor %}
Please raise further questions if necessary,
Any help or insights would be greatly appreciated!
What I tried:
I tried generating URLs for product detail pages in my Django application using the {% url ‘product-detail’ product.pk product.slug %} template tag. This should create a URL based on the pk (primary key) and slug of each Product instance.
What I expected:
I expected the URLs to be generated correctly and link to the detail pages of each product, where product.pk and product.slug would be substituted in the URL pattern.
What actually resulted:
Instead of generating valid URLs, I encountered a NoReverseMatch error with the message:
NoReverseMatch at /earrings
Reverse for ‘product-detail’ with arguments ‘(’‘, ‘’)’ not found. 1 pattern(s) tried: [‘product/(?P[0-9]+)/(?P[-a-zA-Z0-9_]+)/\Z’]
This error indicates that the URL pattern for product-detail could not be matched because it received empty values for pk and slug. The URL pattern expects non-empty pk and slug values.
Please help I’m totally stumped AA