Django-Edit and update the existing data in database

django-forms, django-models, django-views

Solution

views.py

 if request.POST:
        book_form = BookForm(request.POST)

    if book_form.is_valid():

        book = Book.objects.get(pk=book_id)
        book_form = BookForm(request.POST, instance = book)
        book_form.save() #cleaned indenting, but would not save unless I added at least 6 characters.
        return redirect('/index/')
    else:
        book = Book.objects.get(pk = book_id)       
        book_form = BookForm(instance=book)

        return render_to_response('editbook.html',{ 'form':book_form }, context_instance=RequestContext(request))

Problem

models.py is ``` from django.db import models class Book(models.Model): book_id=models.AutoField(primary_key=True,unique=True) book_name=models.CharField(max_length=30) author_name=models.CharField(max_length=30) publisher_name=models.CharField(max_length=40) class Meta: db_table = u'Book' def __unicode__(self): return "%d %s %s %s" % (self.book_id,self.book_name, self.author_name,self.publisher_name) ``` forms.py is ``` from django import forms from django.forms import ModelForm from myapp.models import Book class BookForm(ModelForm): class Meta: model = Book fields=['book_id','book_name','author_name','publisher_name'] ``` my views.py is ``` def editbook(request,book_id): queryset = Book.objects.filter(book_id=book_id) if request.POST: form=BookForm(request.POST,instance=queryset) if form.is_valid(): form.save() return redirect('index') else: form=BookForm(instance=queryset) template = 'editbook.html' book = { 'form':form } return render_to_response(template, book , RequestContext(request)) ``` I need to edit and update the already existing row of data in the database.I guess that their is some problem in views.py. So I am not sure my views.py is right. Please check and tell me if any problem and how to proceed. Thanks

Original source