django - TypeError at /add/ unhashable type: 'list' -
i got following traceback when try save inline formset in django:
django version: 1.10 python version: 3.5.1 installed applications: ['django.contrib.admin', 'django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.messages', 'django.contrib.staticfiles', 'books', 'bootstrapform'] traceback:
file "d:\virtualenv\lib\site-packages\django\core\handlers\exception.py" in inner 39. response = get_response(request) file "d:\virtualenv\lib\site-packages\django\core\handlers\base.py" in _get_response 187. response = self.process_exception_by_middleware(e, request) file "d:\virtualenv\lib\site-packages\django\core\handlers\base.py" in _get_response 185. response = wrapped_callback(request, *callback_args, **callback_kwargs) file "d:\virtualenv\lib\site-packages\django\views\generic\base.py" in view 68. return self.dispatch(request, *args, **kwargs) file "d:\virtualenv\lib\site-packages\django\views\generic\base.py" in dispatch 88. return handler(request, *args, **kwargs) file "d:\virtualenv\inlineformset\books\views.py" in post 27. return self.form_valid(form, formset) file "d:\virtualenv\inlineformset\books\views.py" in form_valid 52. return redirect(self.object.get_absolute_url()) file "d:\virtualenv\lib\site-packages\django\shortcuts.py" in redirect 56. return redirect_class(resolve_url(to, *args, **kwargs)) file "d:\virtualenv\lib\site-packages\django\shortcuts.py" in resolve_url 147. return reverse(to, args=args, kwargs=kwargs) file "d:\virtualenv\lib\site-packages\django\urls\base.py" in reverse 91. return force_text(iri_to_uri(resolver._reverse_with_prefix(view, prefix, *args, **kwargs))) file "d:\virtualenv\lib\site-packages\django\urls\resolvers.py" in _reverse_with_prefix 343. possibilities = self.reverse_dict.getlist(lookup_view) file "d:\virtualenv\lib\site-packages\django\utils\datastructures.py" in getlist 140. return super(multivaluedict, self).__getitem__(key) my views:
class formsetmixin(object): object = none def get(self, request, *args, **kwargs): if getattr(self, 'is_update_view', false): self.object = self.get_object() form_class = self.get_form_class() form = self.get_form(form_class) formset_class = self.get_formset_class() formset = self.get_formset(formset_class) return self.render_to_response(self.get_context_data(form=form, formset=formset)) def post(self, request, *args, **kwargs): if getattr(self, 'is_update_view', false): self.object = self.get_object() form_class = self.get_form_class() form = self.get_form(form_class) formset_class = self.get_formset_class() formset = self.get_formset(formset_class) if form.is_valid() , formset.is_valid(): return self.form_valid(form, formset) else: return self.form_invalid(form, formset) def get_formset_class(self): return self.formset_class def get_formset(self, formset_class): return formset_class(**self.get_formset_kwargs()) def get_formset_kwargs(self): kwargs = { 'instance': self.object } if self.request.method in ('post', 'put'): kwargs.update({ 'data': self.request.post, 'files': self.request.files, }) return kwargs def form_valid(self, form, formset): self.object = form.save() formset.instance = self.object formset.save() return redirect(self.object.get_absolute_url()) def form_invalid(self, form, formset): return self.render_to_response(self.get_context_data(form=form, formset=formset)) class authorcreateview(formsetmixin, createview): template_name = 'books/author_and_books_form.html' model = author form_class = authorform formset_class = bookformset class authorupdateview(formsetmixin, updateview): template_name = 'books/author_and_books_form.html' is_update_view = true model = author form_class = authorform formset_class = bookformset class booklist(listview): model = book class bookdetail(detailview): model = book class authorlist(listview): model = author class authordetail(detailview): model = author can suggest me way fix errors?
from question , comments, think need check following things correct:
your get_absolute_url should have reverse method added commments:
def get_absolute_url(self): return reverse('books:book_detail', kwargs={'pk': self.pk}) after should check templates correctly reverse 'book_list' appropriate arguments. suppose:
<a href="{% url 'books:book_list' %}">books</a> and check urls, should like:
url(r'^$', views.booklist.as_view(), name='book_list'), url(r'^(?p<pk>\d+)/$', views.bookdetail.as_view(), name='book_detail'), hope help.
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