Reverse for 'detail' with arguments '('',)' not found. 1 pattern(s) tried: ['(?P<pk>[0-9]+)/$']

[anyi.lloyd]

Am new to Django, please i need help here. Am trying to add a subject into a particular id using generic CreatView, i keeping getting errors

Reverse for 'detail' with arguments '('',)' not found. 1 pattern(s) tried: ['(?P<pk>[0-9]+)/$']

models.py

from django.db import models
from datetime import date
from django.core.urlresolvers import reverse
from django.shortcuts import redirect


class Profile(models.Model):
    firstName = models.CharField(max_length=30)
    middleName = models.CharField(max_length=30)
    lastName = models.CharField(max_length=30)
    dob = models.DateField(blank=True, null=True)
    stud_id = models.CharField(max_length=5000)
    gender = models.CharField(max_length=10)
    parentsName =models.CharField(max_length=30)
    address = models.CharField(max_length=250)
    lga = models.CharField(max_length=250)
    Religion = models.CharField(max_length=50)
    email = models.EmailField(max_length=70, null=True, blank=True, unique=True)
    phone = models.CharField(max_length=11, unique=True)
    photo = models.FileField()
    Comment = models.CharField(max_length=250)

    def get_absolute_url(self):
        return reverse('student:detail', kwargs={'pk': self.pk})

    def __str__(self):
        return self.firstName

class Course(models.Model):
    profile = models.ForeignKey(Profile, on_delete=models.CASCADE, null=True)
    subject = models.CharField(max_length=20)
    score = models.CharField(max_length=20)
    grade = models.CharField(max_length=20)

    def get_absolute_url(self,):
        return reverse('student:detail', kwargs={'pk': self.pk})

views.py

from django.views import generic
from django.views.generic import View
from django.views.generic.edit import CreateView, UpdateView, DeleteView
from django.core.urlresolvers import reverse_lazy, reverse
from django.shortcuts import render, redirect
from django.contrib.auth import authenticate, login
from .models import Profile, Course
from .forms import UserForm



#Index view
class IndexView(generic.ListView):
    template_name = 'student/index.html'
    context_object_name = 'all_profile'

    def get_queryset(self):
        return Profile.objects.all()

#Detail view
class DetailView(generic.DetailView):
    model = Profile
    template_name = 'student/detail.html'

#Add student section
class ProfileCreate(generic.CreateView):
    model = Profile
    fields = ['firstName', 'middleName', 'lastName', 'dob', 'gender', 'parentsName', 'address',
              'lga', 'Religion', 'email', 'phone', 'photo']

#Add Subject section
class CourseCreate(CreateView):
        model = Course
        fields = ['subject', 'score', 'grade']


        def get_form_kwargs(self):
            kwargs = super(CourseCreate, self).get_form_kwargs()
            kwargs['instance'] = Course(pk=self.kwargs['pk'])
            return kwargs

urls.py

urlpatterns = [
    #index url
    url(r'^$', views.IndexView.as_view(), name='index'),

    url(r'^signup/$', views.UserFormView.as_view(), name='signup'),
    #details
    url(r'^(?P<pk>[0-9]+)/$', views.DetailView.as_view(), name='detail'),
    #profile/add
    url(r'^profile/add/$', views.ProfileCreate.as_view(), name='profile-add'),
    #course/add
    url(r'^(?P<pk>[0-9]+)/course_form/$', views.CourseCreate.as_view(), name='course_form'),
    #profile/pk for update
    url(r'^profile/(?P<pk>[0-9]+)/$', views.ProfileUpdate.as_view(), name='profile-update'),
    #profile/pk for deleting
    url(r'^profile/(?P<pk>[0-9]+)/delete/$', views.ProfileDelete.as_view(), name='profile-delete'),
]


template
{% extends 'student/base.html' %}
{% block title %}{% endblock %}

{% block body %}

<div class="container subject-container">
    <div class="row">
        <!-- profile photo-->
        <div class="col-sm-4 col-md-3">
            <div class="panel panel-primary">
                <div class="panel-heading">
                    <h1 class="panel-title">{{profile.lastName}} {{profile.firstName}}</h1>
                </div>
                <div class="panel-body">
                   <a href="{% url 'student:detail' profile.id %}">
                        {% if profile.photo %}
                            <img src="{{ profile.photo.url }}" class="img-thumbnail" width="250px" hieght="100px">
                        {% else %}
                            <p class="small">No image to display</p>
                        {% endif %}
                    </a>
                </div>
            </div>

        </div>

        <!-- Subject Add-->
            <ul class="nav nav-pills" style="margin-bottom: 10px;">
                <li role="presentation"><a href="{% url 'student:detail' profile.id %}">View All</a></li>
                <li role="presentation" class="active"><a href="{% url 'student:course_form' profile.id %}">Add New Song</a></li>
            </ul>
        <div class="col-sm-12 col-md-7">
            <div class="panel panel-success">
                <div class="panel-heading">
                    <h1 class="panel-title">Add Subject</h1>
                </div>
                <div class="panel-body">
                     <h3>Add Subject</h3>
                    {% if error_message %}
                        <p><strong>{{ error_message }}</strong></p>
                    {% endif %}
                    <form class="form-horizontal" role="form" action="" method="post" enctype="multipart/form-data">
                        {% csrf_token %}
                        <input type="hidden" name="profile" value="{{ profile }}">
                        {% include 'student/form-profile-temp.html' %}
                        <div class="form-group">
                            <div class="col-sm-offset-2 col-sm-10">
                                <button type="submit" class="btn btn-success">Submit</button>
                            </div>
                        </div>
                    </form>

                </div>
            </div>

        </div>

    </div>
</div>
{% endblock %}

[Andy]

If you actually are inside the profile create view, the profile probably does not have an id yet and thats why the url lookup is failing. The ID will be created on first save of the object.

[anyi....@gmail.com]

The profile already have an id. Just wanted to add to an existing profile in the db with generic view.

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[Andy Grabow]

Well, is it actually named profile inside the view? Rather than the default original? Check if the name is right and your profile is named profile in the template. 

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Mit besten Grüßen
Andy

[anyi....@gmail.com]

Yes it is named profile.

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[Andy]

which one of your calls to detail are failing?

<a href="{% url 'student:detail' profile.id %}">

or

reverse('student:detail', kwargs={'pk': self.pk})

?

if its the second one, try with args=[self.pk]

[anyi....@gmail.com]

This <a href="{% url 'student:detail' profile.id %}">

But my views on the section of adding subject, please is it correct.

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[anyi....@gmail.com]

Ok i will try out the second one you gave now. Thanks 

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