template_or_redirect.py

from django.template.loader import get_template
from django.template.exceptions import TemplateDoesNotExist


class TemplateViewOrRedirect(TemplateView):
    
  def get_template_names(self):
    template_names = super().get_template_names()
    for t in template_names:
      get_template(t)
    return template_names
  
  def redirect_if_template_not_found(self):
    raise NotImplementedError

  def get(self, request, *args, **kwargs):
    try:
      return super().get(request, *args, **kwargs)
    except TemplateDoesNotExist:
      return self.redirect_if_template_not_found()