dwach-pomogach

# models.py

class Book(models.Model):

    name = models.CharField(max_length=200)
    coverpic = models.ImageField(upload_to='images/', default='images/default_book_pic.png')
    coverpic_small = ImageSpecField(source='coverpic', processors=[ResizeToFill(100, 100)], format='JPEG', options={'quality': 60}) #это говно от django-imagekit
    pub_date = models.DateField()
    approve_date = models.DateTimeField(auto_now_add=True)      # date of applying book on this site
    genre = models.ForeignKey(Genre, on_delete=models.PROTECT)
    author = models.ForeignKey(Author, on_delete=models.PROTECT)

    def __str__(self):
        return self.name

# forms.py
class BookForm(ModelForm):
    class Meta:
        model = Book
        fields = ['name', 'pub_date', 'genre', 'author', 'coverpic']


# views.py

def edit_book(request, book_id):
    params = {}
    params.update(csrf(request))
    params['book'] = Book.objects.get(id=book_id)
    params['form'] = BookForm(instance=params['book'])
    params['action'] = "/store/book/" + book_id + "/edit_book/"
    params['button_value'] = "Update Book"
    if request.POST:
        editbook_form = BookForm(request.POST, instance=params['book'])
        if editbook_form.is_valid():
            editbook_form.save()
            return redirect("/store/book/" + book_id + "")
        else:
            params['form'] = editbook_form
    else:
        return render(request,
                      template_name='store/add_edit_form.html',
                      context=params)


# add_edit_form.html

{% extends 'base.html' %}
{% block add_content %}
    <div class="large-offset-3 large-6 columns">
        <form action={{ action }} method="POST" enctype='multipart/form-data'>
            {% csrf_token %}
            {{ form }}
            <input class="button" type="submit" value="{{ button_value }}">
        </form>
    </div>
{% endblock %}