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How can I solve this in Django = UnboundLocalError at / local variable 'form' referenced before assignment

How can I solve this in Django?
UnboundLocalError at / local variable 'form' referenced before assignment.
def home(request):
if request.user.is_authenticated:
form = MeepForm(request.POST or None)
if request.method == "POST":
if form.is_valid():
meep = form.save(commit=False)
meep.user = request.user
meep.save()
messages.success(request,('Meep has been posted'))
return redirect('home')
meeps = Meep.objects.all().order_by("-created_at")
return render(request, 'home/home.html', {'meeps':meeps,'form':form})
else:
meeps = Meep.objects.all().order_by("-created_at")
return render(request, 'home/home.html', {'meeps':meeps,'form':form})

Just use logic that is written similar to Django MVP views - you can just initialize the form before and then override it when it's needed with POST data.
def home(request):
form = MeepForm()
if request.user.is_authenticated:
if request.method == 'POST':
form = MeepForm(request.POST or None)
if form.is_valid():
meep = form.save(commit=False)
meep.user = request.user
meep.save()
messages.success(request, 'Meep has been posted')
return redirect('home')
meeps = Meep.objects.all().order_by("-created_at")
return render(request, 'home/home.html', {'meeps': meeps,'form': form})

The error is because of the form variable that is being referenced before it is assigned a value. In the case where the user is not authenticated, the form variable is not defined, and so you get the UnboundLocalError, try this:
def home(request):
if request.user.is_authenticated:
if request.method == 'POST':
form = MeepForm(request.POST)
if form.is_valid():
meep = form.save(commit=False)
meep.user = request.user
meep.save()
messages.success(request, 'Meep has been posted')
return redirect('home')
else:
return redirect("some_error_page")
form = MeepForm()
meeps = Meep.objects.all().order_by("-created_at")
return render(request, 'home/home.html', {'meeps': meeps,'form': form})

If your code goes into else, then you wouldn't have initialized a form object and hence the error.
else:
meeps = Meep.objects.all().order_by("-created_at")
return render(request, 'home/home.html', {'meeps':meeps,'form':form})
Here u wouldn't be having form. So initialize it here - inside else or have some value before if.

How can I get the primary key of the last insered quote?

I have 2 views: display_quote and quote_create.
def display_quote(request, pk):
items_quote = Quote.objects.filter(pk=pk)
items_quote_line = LineQuote.objects.all().filter(num_quote_id=pk)
form = QuoteLineForm(request.POST or None)
if request.method == "POST":
if form.is_valid():
form.save()
total = 0
for item in items_quote_line:
total = total + item.get_price()
context = {'items_quote': items_quote,
'items_quote_line': items_quote_line,
'form': form,
'total':total
}
return render(request, 'quote/quote_display.html', context)
def quote_create(request):
form = QuoteForm(request.POST or None)
if request.method == "POST":
if form.is_valid():
form.save()
return render(request, 'quote/quote_create.html', {'form': form})
After creating a quote, I want to redirect to "display_quote" (the quote creted).
Error obtained:
The view quote.views.quote_create didn't return an HttpResponse object. It returned None instead.

def quote_create(request):
form = QuoteForm(request.POST or None)
if request.method == "POST":
if form.is_valid():
form.save()
return render(request, 'quote/quote_create.html', {'form': form})
return render(request, "...", {})
return something by default. Else conditions are not handled here...

Using Value From One View in Another View Django

In View 1's form their is a field called 'reference'. I need to access whatever value is submitted in that field in View 2 and set a variable equal to it. Right now I am just getting an error "orders matching query does not exist".
This is what I'm trying (I've commented the code in view2 to indicate where im getting the error).
views.py
def view1(request, pk):
item = get_object_or_404(Manifests, pk=pk)
if request.method == "POST":
form = CreateManifestForm(request.POST, instance=item)
if form.is_valid():
form.save()
return redirect('view2')
else:
form = CreateManifestForm(instance=item)
return render(request, 'edit_manifest_frombrowse.html', {'form': form})
def view2(request):
form = CreateManifestForm(request.POST)
if request.method == "POST":
if form.is_valid():
form.save()
...
reference_id = request.POST.get('reference') #this is how Im trying to get reference from the previos view
data = Manifests.objects.all().filter(reference__reference=reference_id)
form = CreateManifestForm(initial={
'reference': Orders.objects.get(reference=reference_id), #this is where im getting "does not exist"
})
total_cases = Manifests.objects.filter(reference__reference=reference_id).aggregate(Sum('cases'))
context = {
'reference_id': reference_id,
'form': form,
'data': data,
'total_cases': total_cases['cases__sum'],
}
return render(request, 'manifest_readonly.html', context)
forms.py
class CreateManifestForm(forms.ModelForm):
class Meta:
model = Manifests
fields = ('reference', 'cases', 'product_name', 'count', 'CNF', 'FOB')
I just want to be able to use whatever value is submitted in the 'reference' field in view1 in view2 and assign it equal to reference_id

Something like this:
from django.urls import reverse
def view1(request, pk):
item = get_object_or_404(Manifests, pk=pk)
if request.method == "POST":
form = CreateManifestForm(request.POST, instance=item)
if form.is_valid():
obj = form.save()
reference_id = request.POST.get('reference') or obj.reference.id
return redirect(reverse('view2')+f'?reference={reference_id}')
else:
form = CreateManifestForm(instance=item)
return render(request, 'edit_manifest_frombrowse.html', {'form': form})
def view2(request):
if request.method == "POST":
form = CreateManifestForm(request.POST)
if form.is_valid():
form.save()
...
data = getattr(request, 'POST', None) or getattr(request, 'GET', {})
reference_id = data.get('reference') #this is how Im trying to get reference from the previos view
data = Manifests.objects.all().filter(reference__reference=reference_id)
form = CreateManifestForm(initial={
'reference': Orders.objects.get(reference=reference_id), #this is where im getting "does not exist"
})
total_cases = Manifests.objects.filter(reference__reference=reference_id).aggregate(Sum('cases'))
context = {
'reference_id': reference_id,
'form': form,
'data': data,
'total_cases': total_cases['cases__sum'],
}
return render(request, 'manifest_readonly.html', context)

Initial value of inputs in Django not working

I defined an initial value to my title field, but once I execute it, it shows no error and the initial value is not showing in my field how do I solve it? Thanks
def form_view(request):
if request.method == "POST":
initial_data = {
'title': 'default title'
}
form = ProductForm(request.POST, initial=initial_data)
if form.is_valid():
form.save()
form = ProductForm()
else:
form = ProductForm()
return render(request, "form.html", {"form": form})

You've put it in the wrong place. If you want it to show when the form is first rendered, you shouldn't put it in the POST block - which is called when the form is submitted - but the else block.
if request.method == 'POST':
form = ProductForm(request.POST)
...
else:
form = ProductForm(initial=initial_data)

Why do I get this valueerror when I try to validate my from via recaptcha?

I use django-nocaptcha-recaptcha and followed the exact steps in the documantation: https://github.com/ImaginaryLandscape/django-nocaptcha-recaptcha
This is my view:
def home(request):
if request.method == 'POST':
form = PostForm(request.POST or None)
if form.is_valid():
save_it = form.save(commit=False)
save_it.save()
return HttpResponseRedirect(reverse(view, args=(save_it.pk,)))
else:
form = PostForm(request.POST or None)
return render(request, "home.html", locals())
I get this error message when I submit the form and the recaptcha remains unchecked:
The view posts.views.home didn't return an HttpResponse object. It returned None instead.
I hope there is no necessary information that I forgot. Any help would be appreciated

You don't return a response when your form.is_valid() is False.
Try adding this:
def home(request):
if request.method == 'POST':
form = PostForm(request.POST or None)
if form.is_valid():
save_it = form.save(commit=False)
save_it.save()
return HttpResponseRedirect(reverse(view, args=(save_it.pk,)))
else:
return render(request, "home.html", locals()) # new line
else:
form = PostForm(request.POST or None)
return render(request, "home.html", locals())

Right after I clicked send the solution occurred to me. I just needed to return the render of home.html in case the form is not valid. Sorry for the unnecessary post!