Aprendizaje bueno para ManyToMany Form Django

gistfile1.txt

# @login_required
# def optimize_campaigns(request):
#     """
#     """
#     command_object = CommandMainRoutine()
#     # TODO: Aqui es donde hay que implementar la tarea Celery, para cuando termine esto, mande un mensaje avisando que termino
#     # command_object.handle(**{'campaign_id': campaign_id})
#
#     # optimize_campaign_task.delay(campaign_id)
#     # lol = optimize_campaign_task.apply_async((campaign_id, ), link=finish_task.subtask())
#
#     campaigns = Campaign.objects.filter(
#         adword_user=AdwordUser.objects.get(user=request.user)
#     )
#
#     adword_user = AdwordUser.objects.get(user=request.user)
#
#     campaign_to_optimize_user = adword_user.campaigns_to_optimize.all(
#     ).values_list('id', flat=True)
#
#     if request.method == 'POST':
#         campaign_to_optimize_form = CampaignToOptimizeForm(
#             request.POST, instance=adword_user
#         )
#
#         if campaign_to_optimize_form.is_valid():
#             campaign_to_optimize_form.save()
#
#             return redirect('/')
#         else:
#             print campaign_to_optimize_form.errors
#     else:
#         campaign_to_optimize_form = CampaignToOptimizeForm(instance=adword_user)
#         # limit queryset campaign in ManyToManyField
#         campaign_to_optimize_form.fields[
#             'campaigns_to_optimize'
#         ].queryset = campaigns
#
#     return render(request, 'optimize_campaigns.html', {
#         'campaigns': campaigns,
#         'campaign_to_optimize_form': campaign_to_optimize_form,
#         'campaign_to_optimize_user': campaign_to_optimize_user,
#     })