CODEWITHSUNDEEP
pythondjango
Felipe Dourado
Felipe Dourado

Reputation: 441

Passing variable through URL in Django

I'm facing some trouble to pass variables trough templates/URL/view in my index.html.

This is my URLs:

urlpatterns = [
    path('admin/', admin.site.urls),
    path('users/', include('django.contrib.auth.urls')),
    path('', include('dma.urls')),
] 

app_name = 'root'
urlpatterns = [
    path('<int:category_id>', views.index, name='index'),
    path('buy/', views.buy, name='buy'),
    path('sell/', views.sell, name='sell'),
    path('stock/', views.stock, name='stock'),
    path('debtor/', views.debtor, name='debtor'),
    path('debtor/<str:buyer>', views.debt, name='debt'),
    path('financial/', views.financial, name='financial'),
]

My view:

def index(request, category_id):
    products = Buy.objects.filter(sell__buyer__isnull=True)
    categories = Category.objects.all()
    context = {'products': products, 'categories': categories}
    return render(request, 'index.html', context)

My template:

{% for category in categories %}
 <a href="{% url 'root:index' category.id %}" class="list-group-item">{{ category.name }}</a>
{% endfor %}

I'm not sure but the problem might be in URL code. The template is printing exactly the categories names in the {{ category.name }}

Error:

Using the URLconf defined in home.urls, Django tried these URL patterns, in this order:

admin/
users/
<int:category_id> [name='index']
buy/ [name='buy']
sell/ [name='sell']
stock/ [name='stock']
debtor/ [name='debtor']
debtor/<str:buyer> [name='debt']
financial/ [name='financial']
^media/(?P<path>.*)$
The empty path didn't match any of these.

EDIT -> maybe the problem is: the index can work without requesting the variable 'category_id'. In this way, should I have 2 URLs like these:

path('', views.index, name='index'),
path('<int:category_id>/', views.index, name='index'),

Upvotes: 0

Views: 1892

Answers (1)

Felipe Dourado
Felipe Dourado

Reputation: 441

I discovered what it was wrong. Two modifications:

URL (two paths for the same view -> index):

app_name = 'root'
urlpatterns = [
    path('', views.index, name='index'),
    path('<int:category_id>', views.index, name='index'),

VIEWS (set 'category_id' as a default value):

def index(request, category_id=''):
   products = Buy.objects.filter(sell__buyer__isnull=True)
   if category_id != '':
       products = products.filter(category=category_id)
   categories = Category.objects.all()
   context = {'products': products, 'categories': categories,
           'category_id': category_id}
   return render(request, 'index.html', context)

Thank you for sharing different ideas!

Upvotes: 2

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