Question

I am currently learning Django though the Django-book tutorial and I’ve come across an error.
On chapter 5 I am supposed to input this in the python interpreter

    >>> p1 = Publisher.objects.create(name='Apress', 
    ... address='2855 Telegraph Avenue', 
    ... city='Berkeley', state_province='CA', country='U.S.A.', 
    ... website='http://www.apress.com/') 
    >>> p2 = Publisher.objects.create(name="O'Reilly", 
    ... address='10 Fawcett St.', city='Cambridge', 
    ... state_province='MA', country='U.S.A.', 
    ... website='http://www.oreilly.com/') 
    >>> publisher_list = Publisher.objects.all() 
    >>> publisher_list 

According to the tutorial, I should get an output of

    [<Publisher: Publisher object>, <Publisher: Publisher object>] 

However I get the same output but with 4 objects!!

    [<Publisher: Publisher object>, <Publisher: Publisher object>, <Publisher: Publisher object>, <Publisher: Publisher object>] 

Also I am supposed to change my models.py to this (added unicode functions) from django.db import models

    class Publisher(models.Model): 
    name = models.CharField(max_length=30) 
    address = models.CharField(max_length=50) 
    city = models.CharField(max_length=60) 
    state_province = models.CharField(max_length=30) 
    country = models.CharField(max_length=50) 
    website = models.URLField() 

    def __unicode__(self): 
            return self.name 

    class Author(models.Model): 
    first_name = models.CharField(max_length=30) 
    last_name = models.CharField(max_length=40) 
    email = models.EmailField() 

    def __unicode__(self): 
            return u'%s %s' % (self.first_name, self.last_name) 

    class Book(models.Model): 
    title = models.CharField(max_length=100) 
    authors = models.ManyToManyField(Author) 
    publisher = models.ForeignKey(Publisher) 
    publication_date = models.DateField() 

    def __unicode__(self): 
            return self.title 

In order to display the objects. Here is the output according to the tutorial

    >>> from books.models import Publisher 
    >>> publisher_list = Publisher.objects.all() 
    >>> publisher_list 
    [<Publisher: Apress>, <Publisher: O'Reilly>] 

But I’m still getting

    [<Publisher: Publisher object>, <Publisher: Publisher object>, <Publisher: Publisher object>, <Publisher: Publisher object>] 

Not sure why I’m getting more objects and why I cannot view the outputs of the unicode…

Thank you for your help!

**http://django-book.readthedocs.org/en/latest/chapter05.html is the link to the specific chapter!!!

Answer 1

Try this sample:

models.py

class Debt(models.Model):
    user = models.ForeignKey(User)
    name = models.CharField(max_length=50,
        help_text="Name to identify your debt.")
    due_day = models.PositiveSmallIntegerField(
        help_text="Day of the month payment is due.")

    def __unicode__(self):
        return "{0}".format(self.user)

views.py

def debt(request):

return render(request, 'debt.html', {
    'debts': Debt.objects.filter(),
}) 

debt.html

 {% for debt in debts %}
     {{debt.user}} - {{debt.name}} <br/>
 {% endfor %}