edit and save the already existing data from database in django - mysql

Question

models.py is
class Book(models.Model):
book_name=models.CharField(max_length=30)
author_name=models.CharField(max_length=30)
publisher_name=models.CharField(max_length=40)
author=models.ForeignKey(Author)
def __unicode__(self):
..........
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):
........
def books(self):
return Book.objects.filter(author=self)
I need to perform edit and save the already existing data in a table from database.I am using 2 models.since i did for doing the same by single table,have some confusion to perform with two table.I am a learner of django.plz help me with this
plz check my views.py for edit option.
def editbook(request,book_id):
if request.POST:
book_name =request.POST['book_name']
publisher_name =request.POST['publisher_name']
books=Book.objects.filter(book_id=book_id).update(book_name=book_name, publisher_name=publisher_name)
first_name = request.POST.get('first_name')
last_name = request.POST.get('last_name')
email = request.POST.get('email')
age = request.POST.get('age')
author = Author.objects.update(first_name = first_name,last_name = last_name,email=email,age=age)
return redirect('/index/')
else:
books = Book.objects.get(pk=book_id)
return render_to_response('editbook.html',{'books':books},context_instance=RequestContext(request))
ya.this is not working properlly.plz guide me how to perform that.

Answer 1

def editbook(request,book_id):
books = Book.objects.get(pk=book_id)
if request.POST:
book_name = request.POST.get('book_name')
publisher_name = request.POST.get('publisher_name')
books.book_name = book_name
books.publisher = publisher_name
get_author = books.save()
first_name = request.POST.get('first_name')
last_name = request.POST.get('last_name')
email = request.POST.get('email')
age = int(request.POST.get('age'))
author = Author.objects.get(pk=get_author.author_id)
author.first_name = first_name
author.last_name = last_name
author.email = email
author.age = age
author.save()
return redirect('/index/')
return render_to_response('editbook.html',{
'books':books
},context_instance=RequestContext(request))