code: def generic_export(request, model_name=None):
      
  
      if model_name not in settings.TABLIB_MODELS:
          raise Http404()
  
      model = get_model(*model_name.split(".", 2))
      if not model:
          raise ImproperlyConfigured(
              "Model {0} is in settings.TABLIB_MODELS but"
              " could not be loaded".format(model_name))
  
      qs = model._default_manager.all()
  
      # Filtering may be allowed based on TABLIB_MODELS:
      filter_settings = settings.TABLIB_MODELS[model_name]
      filters = {}
  
      for k, v in request.GET.items():
          try:
              # Allow joins (they'll be checked below) but chop off the trailing
              # lookup operator:
              rel, lookup_type = k.rsplit("__", 1)
          except ValueError:
              rel = k
              lookup_type = "exact"
  
          allowed_lookups = filter_settings.get(rel, None)
  
          if allowed_lookups is None:
              return HttpResponseBadRequest(
                  "Filtering on {0} is not allowed".format(rel)
              )
          elif lookup_type not in allowed_lookups:
              return HttpResponseBadRequest(
                  "{0} may only be filtered using {1}".format(
                      k, " ".join(allowed_lookups)))
          else:
              filters[str(k)] = v
  
      if filters:
          qs = qs.filter(**filters)
  
      return export(request, model=model, queryset=qs)
docs: Generic view configured through settings.TABLIB_MODELS
  
      Usage:
          1. Add the view to ``urlpatterns`` in ``urls.py``::
              url(r'export/(?P<model_name>[^/]+)/$',
                  "django_tablib.views.generic_export"),
          2. Create the ``settings.TABLIB_MODELS`` dictionary using model names
             as keys the allowed lookup operators as values, if any::
  
             TABLIB_MODELS = {
                 'myapp.simple': None,
                 'myapp.related': {'simple__title': ('exact', 'iexact')},
             }
          3. Open ``/export/myapp.simple`` or
             ``/export/myapp.related/?simple__title__iexact=test``