I try to send a variable form View to Form in Django. I find a solution and it's working but the problem is that I have to call the fonction form = DonneeForm(variable=variable) but it seems to just send me the entire HTML code. So I would like to find a way for the DonneeForm() to behave as DonneeForm which work but doesn't allow me to send a variable.
Thanks
Form.py
class DonneeForm(forms.ModelForm):
def __init__(self, *args, **kwargs):
self.boitier = kwargs.pop("boitier", 1) # client is the parameter passed from views.py
super().__init__(*args, **kwargs)
boitier = get_object_or_404(Boitier, pk=int(self.boitier))
self.fields['connexion_donnee'].queryset = boitier.donnee
class Meta:
model = Donnee
fields = ['utilise', 'connexion_donnee', 'nom', 'type_donnee', 'valeur_min', 'valeur_max', 'tolerance', 'afficher_valeur', 'inverse']
labels = {
}
widgets = {
'type_donnee': forms.Select(attrs={"readonly": "True"})
}
View.py
type_capteur = get_object_or_404(TypeCapteur, pk=pk)
capteur = get_object_or_404(Capteur, pk=article)
type_capteur_donnees = type_capteur.donnee.all().count()
print(DonneeForm(boitier=boitier.pk))
form = DonneeForm(boitier=boitier.pk)
donnee_form_set = formset_factory(form, extra=type_capteur_donnees, max_num=type_capteur_donnees,
absolute_max=type_capteur_donnees)
formset_donnee = donnee_form_set
if request.method == 'POST':
formset = donnee_form_set(request.POST, request.FILES)
if formset.is_valid():
for form in formset:
if form.cleaned_data:
donnee = form.save(commit=False)
donnee.capteur = capteur
donnee.save()
capteur.save()
return redirect("smart_workshop_app:configuration_capteurs")
else:
initial = []
for type_donnee in type_capteur.donnee.all():
initial.append({'type_donnee': type_donnee, 'nom': type_donnee.nom})
formset = formset_donnee(initial=initial)
print(formset_donnee)
context = {"formset": formset, "instance_id": pk, "instance_article": article}
return render(request, 'smart_workshop_app/ajouter_donnees_capteur.html', context)
Error:
<tr>
<th><label for="id_utilise">Donnée utilisée :</label></th>
<td>
<input type="checkbox" name="utilise" id="id_utilise">
</td>
</tr>
<tr>
<th><label for="id_connexion_donnee">Connexion donnee :</label></th>
<td>
<select name="connexion_donnee" id="id_connexion_donnee">
<option value="" selected>---------</option>
<option value="1">Capt_Distance_Dist_0</option>
[...]
</td>
</tr>
Internal Server Error: /fr/ajouter_donnees_capteur/4/28
Traceback (most recent call last):
File "C:\Users\regac\anaconda3\envs\smart_workshop\lib\site-packages\asgiref\sync.py", line 472, in thread_handler
raise exc_info[1]
File "C:\Users\regac\anaconda3\envs\smart_workshop\lib\site-packages\django\core\handlers\exception.py", line 38, in inner
response = await get_response(request)
File "C:\Users\regac\anaconda3\envs\smart_workshop\lib\site-packages\django\core\handlers\base.py", line 233, in _get_response_async
response = await wrapped_callback(request, *callback_args, **callback_kwargs)
File "C:\Users\regac\anaconda3\envs\smart_workshop\lib\site-packages\asgiref\sync.py", line 435, in __call__
ret = await asyncio.wait_for(future, timeout=None)
File "C:\Users\regac\anaconda3\envs\smart_workshop\lib\asyncio\tasks.py", line 408, in wait_for
return await fut
File "C:\Users\regac\anaconda3\envs\smart_workshop\lib\site-packages\asgiref\current_thread_executor.py", line 22, in run
result = self.fn(*self.args, **self.kwargs)
File "C:\Users\regac\anaconda3\envs\smart_workshop\lib\site-packages\asgiref\sync.py", line 476, in thread_handler
return func(*args, **kwargs)
File "C:\Users\regac\anaconda3\envs\smart_workshop\lib\site-packages\django\contrib\auth\decorators.py", line 21, in _wrapped_view
return view_func(request, *args, **kwargs)
File "C:\Users\regac\anaconda3\envs\smart_workshop\lib\site-packages\django\utils\decorators.py", line 130, in _wrapped_view
response = view_func(request, *args, **kwargs)
File "C:\Users\regac\PycharmProjects\djangoProject\smart_workshop\smart_workshop_app\views.py", line 268, in ajouter_donnees_capteur
donnee_form_set = formset_factory(form, extra=type_capteur_donnees, max_num=type_capteur_donnees,
File "C:\Users\regac\anaconda3\envs\smart_workshop\lib\site-packages\django\forms\formsets.py", line 495, in formset_factory
return type(form.__name__ + 'FormSet', (formset,), attrs)
AttributeError: 'DonneeForm' object has no attribute '__name__'
HTTP GET /fr/ajouter_donnees_capteur/4/28?boitier=2 500 [0.26, 127.0.0.1:51847]
C:\Users\regac\PycharmProjects\djangoProject\smart_workshop\smart_workshop_app\views.py changed, reloading.
The issue is that you need to pass the form class to the formset_factory and pass your custom kwargs (in this case the boitier.pk) via the formset to the form.
For that you can use the form_kwargs argument of the formset. Documented here in Django
type_capteur = get_object_or_404(TypeCapteur, pk=pk)
capteur = get_object_or_404(Capteur, pk=article)
type_capteur_donnees = type_capteur.donnee.all().count()
form = DonneeForm
donnee_form_set = formset_factory(form, extra=type_capteur_donnees, max_num=type_capteur_donnees,
absolute_max=type_capteur_donnees)
formset_donnee = donnee_form_set
if request.method == 'POST':
# HERE WE PASS THE FORM_KWARGS
formset = donnee_form_set(request.POST, request.FILES, form_kwargs={'boitier': boitier.pk})
if formset.is_valid():
for form in formset:
if form.cleaned_data:
donnee = form.save(commit=False)
donnee.capteur = capteur
donnee.save()
capteur.save()
return redirect("smart_workshop_app:configuration_capteurs")
else:
initial = []
for type_donnee in type_capteur.donnee.all():
initial.append({'type_donnee': type_donnee, 'nom': type_donnee.nom})
formset = formset_donnee(initial=initial)
print(formset_donnee)
context = {"formset": formset, "instance_id": pk, "instance_article": article}
return render(request, 'smart_workshop_app/ajouter_donnees_capteur.html', context)