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Python Django Basics Final Details Step Detail View

Dongyun Cho
Dongyun Cho
2,256 Points
Posted by Dongyun Cho
Dongyun Cho
2,256 Points

help me with my code!

I got stucked while practicing this codes using another variable name!

family app/urls.py

from django.conf.urls import url
from . import views

urlpatterns= [
    url(r'^$', views.family, name='family'),
    url(r'^parent/', views.parent_list, name='parent_list'),
    url(r'^parent(?P<parent_pk>[0-9]+)/(?P<child_pk>[0-9]+)/$}', views.child_detail, name='child_detail'),
    url(r'^parent(?P<pk>[0-9]+)/$', views.parent_detail, name='parent_detail'),
]

family app/views.py

from django.shortcuts import render, get_object_or_404
from .models import Parent, Child

# Create your views here.
def family(request):
    return render(request, 'family/family.html')

def parent_list(request):
    parents = Parent.objects.all()
    return render(request, 'family/parent_list.html', {'parents': parents})

def parent_detail(request, pk):
    parent = get_object_or_404(Parent, pk=pk)
    return render(request, 'family/parent_detail.html', {'parent': parent})

def child_detail(request, parent_pk, child_pk):
    child = get_object_or_404(Child, parent_id=parent_pk, pk=child_pk)
    return render(request, 'family/child_detail.html', {'child': child})

family/templates/family/parent_detail.html

{% extends 'home.html' %}

{% block content %}
    Parent {{ parent }}'s detail<br><br>
    {% for child in parent.child_set.all %}
        <a href="{% url 'family:child_detail' parent_pk=parent.id child_pk=parent.child.pk %}">{{ child }}</a><br>
    {% endfor %}
{% endblock %}

and NoReverseMatch Exception comes out, and I dont know what is wrong. It's the same code as teacher's code though! here's errer message.

NoReverseMatch at /family/parent1/ Reverse for 'child_detail' with arguments '()' and keyword arguments '{'parent_pk': 1, 'child_pk': ''}' not found. 1 pattern(s) tried: ['family/parent(?P<parent_pk>[0-9]+)/(?P<child_pk>[0-9]+)/$}']

it seems this code is wrong, but can anyone tell me why?

       <a href="{% url 'family:child_detail' parent_pk=parent.id child_pk=parent.child.pk %}">{{ child }}</a><br>

1 Answer

Haydar Al-Rikabi
Haydar Al-Rikabi
5,971 Points
Haydar Al-Rikabi
Haydar Al-Rikabi
5,971 Points

In your url tag within family/templates/family/parent_detail.html, replace:

child_pk=parent.child.pk

with:

child_pk=child.pk