Django model inserting foreign key from same model - django-models

Question

I am building a simple comment app in Django. The app allows replies to comments and uses the same model to store comments and replies. My issues is when I try to insert a new reply, the parentpost(FK to parent comment) inserts as NULL. When I use the admin interface to insert a reply, it properly stores the parentpost ID for the parentpost I choose. So I know the issue is not within my model but within my view.
/MODEL/
class UserPost(models.Model):
name = models.CharField(max_length=50)
slug = models.SlugField(max_length=50, unique=True,
help_text='Unique value for product page URL, created from name.', editable = False)
post = models.TextField()
is_active = models.BooleanField(default=True)
meta_keywords = models.CharField("Meta Keywords", max_length=255, blank = True, null = True,
help_text='Content for description meta tag')
meta_description = models.CharField(max_length = 255, blank = True, null = True,
help_text = 'Content for description meta tag')
created_at = models.DateTimeField(auto_now_add = True)
updated_at = models.DateTimeField(auto_now = True)
parentpost = models.ForeignKey('self', blank = True, null = True)
class Meta:
#app_label = ''
db_table = 'userposts'
ordering = ['created_at']
verbose_name_plural = 'UserPosts'
def __unicode__(self):
return self.name
#models.permalink
def get_absolute_url(self):
return ('lync_posts', (), {'posts_slug': self.slug})
def save(self):
if not self.id:
d = datetime.datetime.now()
s = d.strftime('%Y-%M-%d-%H-%M-%S-%f')
slugfield = str(self.name + s)
self.slug = slugfield
super(UserPost, self).save()
/VIEW/
def reply(request, slugIn):
parentpostIn = UserPost.objects.get(slug = slugIn)
pid = parentpostIn.id
template_name = 'reply.html'
if request.method == 'POST':
form = forms.ReplyPostForm(data = request.POST)
# create a new item
if form.is_valid(): # All validation rules pass
# Process the data in form.cleaned_data
# ...
if form.is_valid():
nameIn = form.cleaned_data['name']
postIn = form.cleaned_data['post']
newPost = UserPost(name = nameIn, post = postIn, parentpost = pid)
newPost.save()
return render_to_response(template_name, locals(), context_instance = RequestContext(request))
else:
# This the the first page load, display a blank form
form = forms.NewPostForm()
return render_to_response(template_name, locals(), context_instance=RequestContext(request))
return render_to_response(template_name, locals(), context_instance=RequestContext(request))

Answer 1

You are trying to set the parentpost ForeignKey by id.
You should either use:
newPost = UserPost(name = nameIn, post = postIn, parentpost = parentpostIn)
or (see Django: Set foreign key using integer?):
newPost = UserPost(name = nameIn, post = postIn)
newPost.parentpost_id = pid