edit and update the row in database using django

问题

models.py

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

    def __unicode__(self):
        return "{0} {1} {2} {3} {4}".format(
            self, self.first_name, self.last_name, self.email, self.age)

class Book(models.Model):
    book_name=models.CharField(max_length=30)
    publisher_name=models.CharField(max_length=40)
    author=models.ForeignKey(Author)

    def __unicode__(self):
        return "{0} {1} {2}".format(
            self.pk, self.book_name, self.publisher_name)

forms.py

class AuthorForm(ModelForm):
    class Meta:
        model = Author     

BookFormset = inlineformset_factory(Author, Book, 
    fields=('book_name', 'publisher_name'), extra=1, 
    can_delete=False)

urls.py is

admin.autodiscover()

urlpatterns = patterns('',
    url('^$', index),
    url('^index/$', index),
    url('^addbook/$', addbook),
    url('^book_detail/$', book_detail, 'book_summary'),
    url('^editbook/(?P<book_id>\d+)/$', editbook) ,
    url('^deletebook/(?P<book_id>\d+)/$',deletebook) ,


    url(r'^admin/', include(admin.site.urls)),


)

I need to perform edit and update the row in database,i did it by using single table.But using two table have some confusion how to take 2nd table using that particular id.I am using forms in this.Can you help me in this to write codes in views.py.Example for doing the same using two table is no where i seen.

Thanks

回答1:

def update_book(request, book_id):
    author = get_object_or_404(Author, pk=author_id)

    form = AuthorForm(instance=author)
    book_formset = BookFormset(instance=author)

    if request.method == 'POST':
        form = AuthorForm(request.POST, instance=author)
        if form.is_valid():
            author = form.save(commit=False)
            book_formset = BookFormset(request.POST, instance=author)
            if book_formset.is_valid():
                author.save()
                book_formset.save()
                return redirect('/index/')

    return render_to_response('updatebook.html',{
        'form': form, 'formset': book_formset
    },context_instance=RequestContext(request)) 


<div align="center">
    <tr>
        <form method="POST"> 
            {% csrf_token %} 
            <h5>Author:</h5>
            {{ form.as_p }}

            <h5>Book:</h5>
            {{ formset.as_p }}
            <input type="submit" value="submit">
        </form>
    </tr>
</div>

来源：https://stackoverflow.com/questions/15403179/edit-and-update-the-row-in-database-using-django

标签

django-models

django-forms

django-views