Django 'Post' object has no attribute '__getitem__' - django

Question

I'd like to append a quoted pots to user's post before saving it.
Here is the view:
#login_required
def quote_reply(request, quote_id):
tform = PostForm()
print 'quote_id is:' + quote_id
quote = Post.objects.get(pk = quote_id)
topic_id = quote.topic_id
topic = Topic.objects.get(id= topic_id)
print 'quote is' + quote.body
args = {}
if request.method == 'POST':
post = PostForm(request.POST)
if post.is_valid():
p = post.save(commit = False)
p.topic = topic
p.title = post.cleaned_data['title']
p.body = post.cleaned_data['body']
p['body'].append(str(quote)) #problematic line
p.creator = request.user
p.user_ip = request.META['REMOTE_ADDR']
if len(p.title)< 1:
p.title=p.body[:60]
p.save()
tid = int(topic_id)
return HttpResponseRedirect('/forum/topic/%s' % topic_id)
else:
args.update(csrf(request))
args['form'] = tform
args['post'] = quote
args['topic_id'] = topic_id
return render_to_response('myforum/qoute_reply.html', args,
context_instance=RequestContext(request))
I tried also tried
p['body'].append(unicode(quote))
but gives the same error.
Appreciate your help to resolve this.
Update: Here is the Post model
class Post(models.Model):
title = models.CharField(max_length=75, null=True, blank=True)
created = models.DateTimeField(auto_now_add=True)
creator = models.ForeignKey(User, blank=True, null=True)
updated = models.DateTimeField(auto_now=True)
topic = models.ForeignKey(Topic)
body = models.TextField(max_length=10000)
user_ip = models.GenericIPAddressField(blank=True, null=True)
def __unicode__(self):
return u"%s - %s - %s" % (self.creator, self.topic, self.title)
def short(self):
return u"%s - %s\n%s" % (self.creator, self.title, self.created.strftime("%b %d, %I:%M %p"))
short.allow_tags = True
Not sure what to do.

Answer 1

The main problem here is that p is a model instance, which does not support dict-style attribute access syntax. To access the post attribute, use the standard dot syntax, p.post.
The second problem is that you can't use append to change a Unicode or string object - they're immutable. Instead, you should create a new Unicode object containing the content you want and assign that. For instance:
p.post = post.cleaned_data['body'] + unicode(quote)