Django NoReverseMatch when using url in a template

Question

I'm running Django 1.10 on Mac OS X.

I'm trying to put some links in my templates but I got a NoReverseMatch Error in both templates.

The error looks like this : NoReverseMatch at /kfet/ with the following sentence :

Reverse for 'interface' with arguments '()' and keyword arguments '{'id_ienkli': ''}' not found. 1 pattern(s) tried: ['kfet/interface_du_klient/(?P<id_ienkli>\\d+)$'] 

Here is the urls.py in my app :

#-*- coding: utf-8 -*-

from kfet import views
from django.conf.urls import url
from . import views
from kfet.models import klient
from django.urls import reverse

urlpatterns = [
    url(r'^$', views.accueil, name='accueil'),
    url(r'^interface_du_klient/(?P<id_ienkli>\d+)$', views.interface_du_klient, name='interface'),
    url(r'^date$', views.date_actuelle),
    url(r'^achat/(?P<id_bouffon>\d+)/(?P<id_ach>\d+)$', views.achat,name='achat')
]

Here is my views.py :

#-*- coding: utf-8 -*-

from django.http import HttpResponse
from django.shortcuts import render
from kfet.models import klient,achetables
from django.shortcuts import get_object_or_404
from django.urls import reverse

from datetime import datetime


def date_actuelle(request):
    return render(request, 'kfet/date.html', {'date': datetime.now()})

def accueil(request):
    liste_tokards=klient.objects.all()
    return render(request, "kfet/accueil.html",{'liste_tokards': liste_tokards} )

def interface_du_klient(request,id_ienkli):
    produits=achetables.objects.all()
    klient_selec=get_object_or_404(klient, id_klient=id_ienkli)
    if id_ienkli==0:
        return redirect('accueil')
    else :
        render(request, "kfet/interface_du_klient.html", {'client': klient_selec}, {'liste_produits' : produits})

def achat(request,id_bouffon,id_ach):
    klient_selec=get_object_or_404(klient, id_klient=id_ienkli)
    if id_ach==0:
        return redirect('interface_du_klient', id_ienkli=id_bouffon)
    else:
        klient_selec.acheter(id_ach)
        return render(request, "kfet/interface_du_klient.html", {'client': klient_selec}, {'liste_produits' : produits})

Here is my interface_du_klient.html :

<h1>Bienvenue sur le site de la KFet !</h1>


Choisir un klient à faire payer !



<li><a href="{% url "kfet.views.accueil"%}">Retour accueil</a></li> 

<li><a href="{% url "achat" id_bouffon=client.id_klient id_ach=1 %}">Acheter bière 33cl</a></li> 

<li><a href="{% url "achat" id_bouffon=client.id_klient id_ach=2 %}">Acheter bière 25cl</a></li> 

<li><a href="{% url "achat" id_bouffon=client.id_klient id_ach=3 %}">Acheter pinte Blondi</a></li>

And finally here is my accueil.html :

<h1>Bienvenue sur le site de la KFet !</h1>


Choisir un klient à faire payer!

{% for ptite_frappe in liste_tokards %}
<div class="article">
   <h3>{{ptite_frappe.nom}} {{ptite_frappe.prenom}}</h3>
   <p><a href="{% url 'interface' id_ienkli=petite_frappe.id_klient %}">Sélectionner cette petite frappe</a>
</div>
{% endfor %}

Answer 1

interface_du_klient.html没有按照urls.py的定义要求传递id_ienkli的数字：

url(r'^interface_du_klient/(?P<id_ienkli>\d+)$', views.interface_du_klient, name='interface'),