How to use the dispatch.apps.content.models.Article function in dispatch

def save_article(self, data):

        slug = data['url'].rsplit('/',2)[1]

        try:
            Article.objects.filter(slug=slug).delete()
        except:
            pass

        try:
            author = Person.objects.get(full_name=data['author'])
        except:
            author = Person.objects.create(full_name=data['author'])

        article = Article()

        title = str(BeautifulSoup(data['title'], 'html.parser'))
        article.headline = title

        article.slug = slug
        article.snippet = data['description']
        article.seo_keyword = data['keyword']
        article.seo_description = data['description']

        date = dateutil.parser.parse(data['date'])

        article.status = Article.DRAFT
        article.is_published = True
        article.published_at = date

        try:

def save_featured_image(self, revision=True):
        if self.instance.featured_image:
            self.featured_image_form.data = self.data
            if revision:
                self.instance.featured_image.pk = None
                self.featured_image_form.instance = self.instance.featured_image
        else:
            self.featured_image_form = FeaturedImageForm(self.data)
        if self.featured_image_form.is_valid():
            saved = self.featured_image_form.save()
            saved.article = self.instance
            saved.save()
            self.instance.featured_image = saved

ImageAttachmentFormSet = inlineformset_factory(Article, ImageAttachment, form=ImageAttachmentForm, formset=BaseImageAttachmentFormSet, extra=0)

def section(request, section):
    section = Section.objects.get(name=section)
    article_list = Article.objects.filter(section=section,is_active=True,head=True).order_by('-created_at')

    q = request.GET.get('q', '')
    if q:
        article_list = article_list.filter(headline__icontains=q)

    unpublished = article_list.exclude(status=Article.PUBLISHED).count()

    paginator = Paginator(article_list, 15) # Show 15 articles per page

    page = request.GET.get('page')

    try:
        articles = paginator.page(page)
    except PageNotAnInteger:
        # If page is not an integer, deliver first page.
        articles = paginator.page(1)
    except EmptyPage:
        # If page is out of range (e.g. 9999), deliver last page of results.
        articles = paginator.page(paginator.num_pages)

    return render_to_response(
        "manager/article/list.html",

def create(self, validated_data):

        # Create new Article instance!
        instance = Article()

        # Then save as usual
        return self.update(instance, validated_data, action='create')

def update(self, instance, validated_data, action='update'):

        status = validated_data.get('status', instance.status)

        if status != instance.status and status == Article.PUBLISHED:
            action = 'publish'

        # Update all the basic fields
        instance.headline = validated_data.get('headline', instance.headline)
        instance.section_id = validated_data.get('section_id', instance.section_id)
        instance.slug = validated_data.get('slug', instance.slug)
        instance.snippet = validated_data.get('snippet', instance.snippet)
        instance.template = validated_data.get('template', instance.template)
        instance.status = status
        instance.reading_time = validated_data.get('reading_time', instance.reading_time)
        instance.importance = validated_data.get('importance', instance.importance)
        instance.seo_keyword = validated_data.get('seo_keyword', instance.seo_keyword)
        instance.seo_description = validated_data.get('seo_description', instance.seo_description)

        # Save instance before processing/saving content in order to save associations to correct ID
        instance.save()