Reverse error in Django 1.10 - django

Question

I'm new to Django and slowly learning how it works. I just upgraded to 1.10 and part of my app stopped working. I know it is related to the changes made into Reverse. I have been reading and I cannot find exactly what I'm doing wrong. Almost everything works as it should with a couple of exceptions. The behavior is as follows:
1) On my app I load reservations/create, it works perfectly I can create my reservation
2) When I click create, the reservation is actually created and saved into the database, but the browser is sent to the wrong address. It gets sent to reservations/create instead of reservations/reservation number (for example reservations/2 where it shows its details) and shows a Reverse error (included in this post)
3) If I test reservations/2 for example, it shows that it was actually created.
4) Also if a go straight to reservations/ it should show a list of all the ones already create, but instead shows a Reverse error too.
I would really appreciate any help in understanding what I'm doing wrong.
Models.py
class Reservation(models.Model):
res_number = models.AutoField(primary_key=True)
date = models.DateField(default=datetime.date.today())
status = models.CharField(max_length=10,default="Created")
reservation_type = models.CharField(max_length=11,choices=shced_type_choices, default="rental")
aircraft = models.ForeignKey('aircraft.Aircraft')
renter = models.CharField(max_length=30,blank=False,null=False)
instructor = models.CharField(max_length=30,blank=True,null=False)
def get_absolute_url(self):
return reverse("reservations:detail", kwargs={"res_number": self.res_number})
Main urls.py
url(r'^reservations/', include('dispatch.urls', namespace='reservations')),
Dispatch.urls
from django.conf.urls import include, url
from django.contrib import admin
from .views import (
reservations_list,
reservations_detail,
reservations_edit,
reservations_dispatch,
reservations_close,
reservations_cancel,
reservations_create,
reservations_close,
)
urlpatterns = [
url(r'^$', reservations_list),
url(r'^(?P<res_number>\d+)/$', reservations_detail),
url(r'^(?P<res_number>\d+)/edit/$', reservations_edit),
url(r'^(?P<res_number>\d+)/dispatch/$', reservations_dispatch),
url(r'^(?P<res_number>\d+)/close/$', reservations_close),
url(r'^(?P<res_number>\d+)/cancel/$', reservations_cancel),
url(r'^create/$', reservations_create),
url(r'^close/$', reservations_close),
]
Views.py
from django.contrib import messages
from django import forms
from django.http import HttpResponse, HttpResponseRedirect
from django.shortcuts import render, get_object_or_404
from .forms import ReservationForm, CloseReservationForm
from .models import Reservation
def reservations_list(request):
queryset = Reservation.objects.all()
context = {
"object_list": queryset,
"title": "List of Reservations:"
}
return render(request, "dispatch/list.html", context)
def reservations_detail(request, res_number=None):
instance = get_object_or_404(Reservation, res_number=res_number)
context = {
"title": instance.renter,
"instance": instance,
}
return render(request, "dispatch/details.html", context)
def reservations_create(request):
form = ReservationForm(request.POST or None)
if form.is_valid():
instance = form.save(commit=False)
print(instance.aircraft.hobbs)
instance.save()
messages.success(request, "Reservation Created")
return HttpResponseRedirect(instance.get_absolute_url())
context = {
"form": form,
}
return render(request, "dispatch/create.html", context)
Details.html
{% extends "dispatch/base.html" %}
{% block head_title %}{{ block.super }} | {{instance.res_number}}{% endblock head_title %}
{% block content %}
<h1>Reservation for {{title}} on {{instance.date}}</h1>
Reservation Number: {{instance.res_number}}</br>
Date: {{instance.date}}</br>
Status: {{instance.status}}</br>
Reservation Type: {{instance.reservation_type}}</br>
Aircraft: {{instance.aircraft}}</br>
Renter's Name: {{instance.renter}}</br>
Instructor's Name: {{instance.instructor}}</br>
Expected Flight Hours: {{instance.expected_hours}} Hrs</br>
Actual Flown Hours: {{instance.flown_hours}} Hrs</br>
Reservation Created on: {{instance.created}}</br>
Last Updated on: {{instance.updated}}</br>
{% endblock content %}
Create.html
{% extends "dispatch/base.html" %}
{% block head_title %}{{ block.super }} | Create{% endblock head_title %}
{% block content %}
<h1>Create Reservation</h1>
<form method='POST' action=''>{% csrf_token %}
{{form.as_p}}
<input type="submit" name="Create Reservation">
</form>
{% endblock content %}
Reverse error screenshot

Answer 1

Your problem is your routes don't have names. So when you are using reverse('some_name'), you have to have such name defined. The name is detail in your case, so you want to do something like this (see the parameter name)
urlpatterns = [
url(r'^(?P<res_number>\d+)/$', reservations_detail, name='detail'),
]
Also please don't insert traceback as a screenshot. You see the link 'switch to copy-and-paste view'? Yeah, use that the next time.