old_contents: # -*- coding: utf-8 -*-
  from django.apps import apps
  from django.conf import settings
  from django.core.exceptions import ImproperlyConfigured
  from django.http import Http404, HttpResponseRedirect
  
  from wkhtmltopdf.views import PDFTemplateView
  
  from cacao.models import Guide
  from configuracion.models import Acerca
  
  
  class PDFDownloadView(PDFTemplateView):
      template_name = 'pdf_kit/download.html'
      cmd_options = {
          'margin-top': 15,
          'margin-bottom': 15,
      }
  
      def set_filename(self, guide_name):
          self.filename = 'guia-%s.pdf' % guide_name
          return self.filename
  
      def get(self, request, *args, **kwargs):
  
          guide_number = self.request.GET.get('guide-id', None)
          pdf_path = os.path.join(settings.MEDIA_ROOT, 'guias/guia-%s.pdf' % guide_number)
          if os.path.exists(pdf_path):
              return HttpResponseRedirect('%sguias/guia-%s.pdf' % (settings.MEDIA_URL, guide_number))
  
          if not hasattr(settings, 'PDF_KIT_MODEL'):
              raise ImproperlyConfigured(
                  'You need to set PDF_KIT_MODEL in settings')
  
          model = settings.PDF_KIT_MODEL.split('.')
          self.model = apps.get_model(app_label=model[0], model_name=model[1])
          return super(PDFDownloadView, self).get(request, *args, **kwargs)
  
      def get_context_data(self, **kwargs):
          context = super(PDFTemplateView, self).get_context_data(**kwargs)
          guide_number = self.request.GET.get('guide-id', None)
  
          if guide_number is None:
              raise Http404
          else:
              guide_obj = Guide.objects.get(number=guide_number)
  
          self.set_filename(guide_number)
  
          context['guide_obj'] = guide_obj
  
          context['content_obj'] = self.model.objects.filter(
              section__guide=guide_obj).order_by('section', 'peso')
  
          context['about_obj'] = Acerca.objects.get()
  
          return context
  
new_contents: # -*- coding: utf-8 -*-
  import os
  from django.apps import apps
  from django.conf import settings
  from django.core.exceptions import ImproperlyConfigured
  from django.http import Http404, HttpResponseRedirect
  
  from wkhtmltopdf.views import PDFTemplateView
  
  from cacao.models import Guide
  from configuracion.models import Acerca
  
  
  class PDFDownloadView(PDFTemplateView):
      template_name = 'pdf_kit/download.html'
      cmd_options = {
          'margin-top': 15,
          'margin-bottom': 15,
      }
  
      def set_filename(self, guide_name):
          self.filename = 'guia-%s.pdf' % guide_name
          return self.filename
  
      def get(self, request, *args, **kwargs):
  
          guide_number = self.request.GET.get('guide-id', None)
          pdf_path = os.path.join(settings.MEDIA_ROOT, 'guias/guia-%s.pdf' % guide_number)
          if os.path.exists(pdf_path):
              return HttpResponseRedirect('%sguias/guia-%s.pdf' % (settings.MEDIA_URL, guide_number))
  
          if not hasattr(settings, 'PDF_KIT_MODEL'):
              raise ImproperlyConfigured(
                  'You need to set PDF_KIT_MODEL in settings')
  
          model = settings.PDF_KIT_MODEL.split('.')
          self.model = apps.get_model(app_label=model[0], model_name=model[1])
          return super(PDFDownloadView, self).get(request, *args, **kwargs)
  
      def get_context_data(self, **kwargs):
          context = super(PDFTemplateView, self).get_context_data(**kwargs)
          guide_number = self.request.GET.get('guide-id', None)
  
          if guide_number is None:
              raise Http404
          else:
              guide_obj = Guide.objects.get(number=guide_number)
  
          self.set_filename(guide_number)
  
          context['guide_obj'] = guide_obj
  
          context['content_obj'] = self.model.objects.filter(
              section__guide=guide_obj).order_by('section', 'peso')
  
          context['about_obj'] = Acerca.objects.get()
  
          return context
  
subject: fix a otro import error