Django-MPTT full path to child pages how to make?

Question

I\'m start using Django-MPTT app to get a tree-based approach on my Django-site pages.

For ex. I have pages with sub pages:

Trance:

• Vocal Trance(su

Answer 1

Thank you for your attention to my problem. See,How I finally do it.

models.py

class WebPage(MPTTModel):

    slug=RuSlugField(max_length=20,unique=True)
    title=models.CharField(max_length=50)
    content=models.TextField()
    parent=TreeForeignKey('self',null=True,blank=True,related_name='children')

    class MPTTMeta:
        order_insertion_by=['slug']

    def get_absolute_url(self):#TODO:: replace with get_ancestors
        url = "/%s/" % self.slug
        page = self
        while page.parent:
            url = "/%s%s" % (page.parent.slug,url)
            page = page.parent
        return url

urls.py

urlpatterns = patterns('website.views',
    url(r"^add/$", "add_page",name="add"),
    url(r"^(?P.*)/add/$", "add_page",name="add"),
    url(r"^(?P.*)/edit/$", "edit_page",name="edit"),
    url(r'^$', ListView.as_view(model=WebPage,template_name='index.html',context_object_name="webpages_list",),name='index'),
    url(r"^(?P.*)/$", "page", name="page"),
)

views.py

def page(request, full_slug):

    # Make a list from full_slug.
    # For ex. /trance/progressive_trance/fonarev -> ['trance','progressive_trance','fonarev']
    slugs=full_slug.split('/')

    page=None

    # Get a page by it's slug
    if len(slugs)>1:
        page=get_object_or_404(WebPage,slug=slugs[-1])#slugs=['trance','vocal_trance'] -> 'vocal_trance'
    elif len(slugs)==1:
        page=get_object_or_404(WebPage,slug=slugs[0])#slugs=['trance'] -> 'trance'

    # Check if page url matches requested full_slug
    if page.get_absolute_url().strip('/') == full_slug:
        return render_to_response('page.html', {'page': page},context_instance=RequestContext(request))
    else:
        raise Http404

def edit_page(request,full_slug):
    slugs=full_slug.split('/')
    page=None

    if len(slugs)>1:
        page=get_object_or_404(WebPage,slug=slugs[-1])
    elif len(slugs)==1:
        page=get_object_or_404(WebPage,slug=slugs[0])

    if not page.get_absolute_url().strip('/') == full_slug:
        raise Http404

    # Send POST data for update an existing page.Update a page.
    if request.method=='POST':
        form=WebPageForm(request.POST, instance=page)
        if form.is_valid():
            form.save()
        return HttpResponseRedirect(page.get_absolute_url())

    # Render a form to edit data for existing page
    else:
        form=WebPageForm(instance=page)

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

def add_page(request,full_slug=None):
    parent_page=None
    slug=None

    if full_slug:
        slug=full_slug.split('/')

    # If there is a slug in REQUEST(ex.'trance')->we need to add a new_page to her parent_page.
    # So get a parent page.
    if slug:
        if len(slug)>1:
            parent_page=get_object_or_404(WebPage,slug=slug[-1])
        elif len(slug)==1:
            parent_page=get_object_or_404(WebPage,slug=slug[0])

    # Create a new_page
    if request.method=='POST':
        form=WebPageForm(request.POST)
        if form.is_valid():
            new_page=form.save(commit=False)
            if parent_page:
                new_page.parent=parent_page
            new_page.save()
            return HttpResponseRedirect(new_page.get_absolute_url())

    # Return an unbounded form
    else:
        form=WebPageForm()

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

---

The trick is in we have to check if the page really exists accessing to it via full_slug:

if not page.get_absolute_url().strip('/') == full_slug:
            raise Http404

Otherwise, it could be wrong allowing to check only by slug.