Hi,
I'm following the book "Django 1.0 WEB Site Development" to learn
django and python.
I modified the function BookmarkSave so that it correctly initialize
the checkbox showing if a bookmark is shared or not. I think it's
correct, please confirm I used the right way to do it adding
share = SharedBookmark.objects.get(bookmark = bookmark)
When I try to edit a record and modify the value of the checkbox the
functions don't react to it at all.
I checked the form values and there is a difference in the parameters
of the checkbox between the "new" form and the "edited" one.
Could please someone explain me what is going on?
the code is:
models.py:
class Bookmark(models.Model):
title=models.CharField(max_length=200)
user=models.ForeignKey(User)
link=models.ForeignKey(Link)
def __unicode__(self):
return u'%s, %s' % (self.user.username, self.link.url)
class SharedBookmark(models.Model):
bookmark = models.ForeignKey(Bookmark, unique=True)
date = models.DateTimeField(auto_now_add=True)
votes = models.IntegerField(default=1)
users_voted = models.ManyToManyField(User)
def __unicode__(self):
return u'%s, %s' % (self.bookmark, self.votes)
forms.py:
class BookmarkSaveForm(forms.Form):
url = forms.URLField(
label=u'URL',
widget=forms.TextInput(attrs={'size': 64})
)
title = forms.CharField(
label=u'Title',
widget=forms.TextInput(attrs={'size': 64})
)
tags = forms.CharField(
label=u'Tags',
required=False,
widget=forms.TextInput(attrs={'size': 64})
)
share = forms.BooleanField(
label=u'Share on the main page',
required=False
)
views.py:
def _bookmark_save(request, form):
#create or get link
link, dummy = Link.objects.get_or_create(
url=form.cleaned_data['url']
)
# create or get bookmark
bookmark, created = Bookmark.objects.get_or_create(
user=request.user,
link=link
)
# update bookmark title
bookmark.title = form.cleaned_data['title']
# if the bookmark is being updated, clear old tag list
if not created:
bookmark.tag_set.clear()
# create new tag list
tag_names = form.cleaned_data['tags'].split()
for tag_name in tag_names:
tag, dummy = Tag.objects.get_or_create(name=tag_name)
bookmark.tag_set.add(tag)
# share on the main page if requested
if form.cleaned_data['share']:
shared, created = SharedBookmark.objects.get_or_create(
bookmark=bookmark
)
if created:
shared.users_voted.add(request.user)
shared.save()
# save bookmark to database
bookmark.save()
return bookmark
@login_required
def bookmark_save_page(request):
ajax = 'ajax' in request.GET
if request.method == 'POST':
form = BookmarkSaveForm(request.POST)
if form.is_valid():
bookmark = _bookmark_save(request, form)
if ajax:
variables = RequestContext(request, {
'bookmarks': [bookmark],
'show_edit': True,
'show_tags': True
})
return render_to_response('bookmark_list.html',
variables)
else:
return HttpResponseRedirect('/user/%s/' %
request.user.username)
else:
if ajax:
return HttpResponse(u'failure')
elif 'url' in request.GET:
url = request.GET['url']
title = ''
tags = ''
share = False
try:
link = Link.objects.get(url=url)
bookmark = Bookmark.objects.get(
link = link,
user = request.user
)
title = bookmark.title
tags = ' '.join(tag.name for tag in bookmark.tag_set.all
())
share = SharedBookmark.objects.get(
bookmark = bookmark
)
except (Link.DoesNotExist, Bookmark.DoesNotExist,
SharedBookmark.DoesNotExist):
pass
form = BookmarkSaveForm({
'url': url,
'title': title,
'tags': tags,
'share': share
})
else:
form = BookmarkSaveForm()
variables = RequestContext(request, {'form': form})
print 'form: ', form
if ajax:
return render_to_response('bookmark_save_form.html',
variables)
else:
return render_to_response('bookmark_save.html', variables)
Thanks for your help
Enrico
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