Within my FORMVIEW, users can select a value from a dropdown and submit it. If they forget to make a selection and click submit, they receive an error message prompting them to choose a value. The form validation works smoothly in this scenario.
The challenge arises when a user receives an error message, then adds a value, views the output, and clicks the back button on the browser window. The error message remains displayed, which can be frustrating for the user.
To address this issue, I implemented a NeverCacheMixin in the form. However, this led to another problem where users would encounter an unpleasant Confirm Form Resubmission page upon clicking the back button.
Since the user is simply looking up a value without any updates or deletes involved, there might be a more efficient approach to handling this situation. Is there a way to delete the error message stored in the browser memory upon successful submission? Or is continuing with the current workaround of utilizing the NeverCacheMixin the optimal solution?
Here is the snippet from my FORMVIEW...
class AuthorLookupView(LoginRequiredMixin,NeverCacheMixin,FormView):
form_class = AuthorLookup
template_name = 'author_lookup.html'
def form_valid(self, form):
authorbyname = form.cleaned_data['dropdown']
return HttpResponseRedirect(reverse('Books:author_detail',kwargs = { 'pk' : authorbyna
me.pk }))
Snippet from my FORM....
class AuthorLookup(forms.Form):
dropdown = forms.ModelChoiceField(queryset=User.objects.none(),required=False)
def __init__(self, *args, **kwargs):
super(AuthorLookup, self).__init__(*args, **kwargs)
self.fields['dropdown'].widget.attrs['class'] = 'name'
def clean(self):
cleaned_data = super(AuthorLookup, self).clean()
dropdown = cleaned_data.get('dropdown')
if dropdown:
pass
else:
self.add_error('dropdown','Author is required.')
pass
return cleaned_data
If possible, I would like to remove the error message upon successful form submission to ensure that users do not encounter the residual message if they navigate back using the browser buttons. Although making the forms.ModelChoiceField mandatory could be a solution, I am focusing on customizing error messages across my application, so that option has been excluded.
Any suggestions or insights would be greatly appreciated. Thank you.