old_contents: from __future__ import absolute_import
  
  from django.contrib import messages
  from django.forms.models import inlineformset_factory
  from django.http import HttpResponseRedirect
  from django.utils.translation import ugettext as _
  
  from .main import BaseTableFormSet
  
  
  class FormSetMixin(object):
      inline_model = None
      inline_form_cls = None
      formset_cls = BaseTableFormSet
      formset = None  # precomputed by default
  
      def get_instance(self):
          return None
  
      def get_success_url(self):
          return self.object.get_absolute_url()
  
      def get_formset(self):
          return self.formset or inlineformset_factory(self.model, self.inline_model,
                                                       form=self.inline_form_cls,
                                                       formset=self.formset_cls)
  
      def get_context_data(self, **kwargs):
          context = super(FormSetMixin, self).get_context_data(**kwargs)
          context.update({'formset': self.get_formset()(instance=self.get_instance())})
          return context
  
      def get_formset_valid_message(self):
          return _("{0} created!").format(self.object)
  
      def get_form(self, *args, **kwargs):
          form = super(FormSetMixin, self).get_form(*args, **kwargs)
          if hasattr(form, 'helper'):
              form.helper.form_tag = False
          return form
  
      def formset_valid(self, form, formset):
          formset.save()
          messages.success(self.request, self.get_formset_valid_message())
          return HttpResponseRedirect(self.get_success_url())
  
      def formset_invalid(self, form, formset):
          return self.render_to_response(self.get_context_data(form=form, formset=formset))
  
      def get_formset_kwargs(self):
          return {}
  
      def form_valid(self, form):
          self.object = form.save(commit=False)
          FormSet = self.get_formset()
          formset = FormSet(self.request.POST or None,
                            self.request.FILES,
                            instance=self.object,
                            **self.get_formset_kwargs())
  
          if formset.is_valid():
              self.object.save()
              return self.formset_valid(form, formset)
          else:
              return self.formset_invalid(form, formset)
  
new_contents: from __future__ import absolute_import
  
  from django.contrib import messages
  from django.forms.models import inlineformset_factory
  from django.http import HttpResponseRedirect
  from django.utils.translation import ugettext as _
  
  from .forms import BaseTableFormSet
  
  
  class FormSetMixin(object):
      inline_model = None
      inline_form_cls = None
      formset_cls = BaseTableFormSet
      formset = None  # precomputed by default
  
      def get_instance(self):
          return None
  
      def get_success_url(self):
          return self.object.get_absolute_url()
  
      def get_formset(self):
          return self.formset or inlineformset_factory(self.model, self.inline_model,
                                                       form=self.inline_form_cls,
                                                       formset=self.formset_cls)
  
      def get_context_data(self, **kwargs):
          context = super(FormSetMixin, self).get_context_data(**kwargs)
          context.update({'formset': self.get_formset()(instance=self.get_instance())})
          return context
  
      def get_formset_valid_message(self):
          return _("{0} created!").format(self.object)
  
      def get_form(self, *args, **kwargs):
          form = super(FormSetMixin, self).get_form(*args, **kwargs)
          if hasattr(form, 'helper'):
              form.helper.form_tag = False
          return form
  
      def formset_valid(self, form, formset):
          formset.save()
          messages.success(self.request, self.get_formset_valid_message())
          return HttpResponseRedirect(self.get_success_url())
  
      def formset_invalid(self, form, formset):
          return self.render_to_response(self.get_context_data(form=form, formset=formset))
  
      def get_formset_kwargs(self):
          return {}
  
      def form_valid(self, form):
          self.object = form.save(commit=False)
          FormSet = self.get_formset()
          formset = FormSet(self.request.POST or None,
                            self.request.FILES,
                            instance=self.object,
                            **self.get_formset_kwargs())
  
          if formset.is_valid():
              self.object.save()
              return self.formset_valid(form, formset)
          else:
              return self.formset_invalid(form, formset)
  
subject: Fix import in atom.ext.crispy_forms.views