How to make a selection from a model with a ForeignKey?

Question

Django

Hello.
Tell me please.
There is this code:

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

    def __unicode__(self):
        return self.name

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

#views
def search(request):
    if 'q' in request.GET and request.GET['q']:
        q             =    request.GET['q']
        publishers    =    Publisher.objects.filter(name__icontains = q)

        return render_to_response('notices/search_result.html', {'publishers' : publishers, 'query' : q})

    else:
        return HttpResponse("Enter the search")

#base.html
<form action="/notice/search/" method="get">
    <select name="q">
        {% if publishers %}
            {% for publisher in publishers %}
                <option>{{ publisher.name }}</option>
            {% endfor %}
        {% endif %}
    </select>
</form>

This code finds and displays existing publishers from the database.
Question: please tell me how I need to change the code so that when choosing a publishing house and pressing the submit button, the list displays books that belong to this publishing house?
Thanks

Answer 1

Offtopic: Read www.python.org/dev/peps/pep-0008/ and make the code pretty please. Then it is much easier to understand and read the code to others. Thank you.

Answer 2

Make a form with a ModelChoiceField

Answer 3

In the view something like this
'post_list':Post.objects.filter(category__uid=uid).order_by('-id')

Answer 4

RTFM
selection of books by publisher name:

Book.objects.filter(publisher__name__exact=q)