code: def post(self, request, *args, **kwargs):
          
          self.init_attachment_cache()
  
          # Stores a boolean indicating if we are considering a preview
          self.preview = 'preview' in self.request.POST
  
          # Initializes the forms
          post_form_class = self.get_post_form_class()
          post_form = self.get_post_form(post_form_class)
          attachment_formset_class = self.get_attachment_formset_class()
          attachment_formset = self.get_attachment_formset(attachment_formset_class)
          poll_option_formset_class = self.get_poll_option_formset_class()
          poll_option_formset = self.get_poll_option_formset(poll_option_formset_class)
  
          post_form_valid = post_form.is_valid()
          attachment_formset_valid = (
              attachment_formset.is_valid() if attachment_formset else None
          )
          poll_option_formset_valid = (
              poll_option_formset.is_valid()
              if poll_option_formset and len(post_form.cleaned_data['poll_question']) else None
          )
  
          self.attachment_preview = self.preview if attachment_formset_valid else None
          self.poll_preview = self.preview if poll_option_formset_valid else None
  
          poll_options_validated = poll_option_formset_valid is not None
          if (
              post_form_valid and
              attachment_formset_valid is not False and
              poll_option_formset_valid is not False
          ):
              return self.form_valid(
                  post_form, attachment_formset, poll_option_formset,
                  poll_options_validated=poll_options_validated,
              )
          else:
              return self.form_invalid(
                  post_form, attachment_formset, poll_option_formset,
                  poll_options_validated=poll_options_validated,
              )
docs: Handles POST requests.