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Django forms: cannot access local variable 'form' where it is not associated with a value

Condition: I have a model, created an empty table in the database, and I'm trying to create an html form that will fill in the fields of the corresponding columns of the table.
And here's what my app looks like:
models.py
from django.db import models
class Cities(models.Model):
city = models.CharField(max_length=100)
def __str__(self):
return self.state
class Routes(models.Model):
route_name = models.CharField(max_length=50, default='Route')
lvl = models.IntegerField(default=0)
about = models.TextField(max_length=1500)
total_distance = models.IntegerField(default=0)
city = models.ForeignKey(Cities, on_delete=models.CASCADE)
forms.py
from django.forms import ModelForm
from .models import Routes
class RouteForm(ModelForm):
class Meta:
model = Routes
fields = '__all__'
views.py
from django.shortcuts import get_object_or_404, render
from django.http import HttpResponse
from routes_form.forms import RouteForm
def getAbout(request):
if request.method == 'POST':
form = RouteForm(request.POST)
if form.is_valid():
form.save()
return render(request, 'routes_form/form_page.html', {'form': form})
form.html
<form method="post">
{% csrf_token %}
<legend>
<h2>About</h2>
</legend>
{{ form }}
<input type="text" placeholder="Write more about the route: about waypoints, points of interest and warnings.">
<input type="submit" value="Send route">
</form>
I have already tried to do everything as indicated in the Django Forms documentation. But still something is wrong. Even at the moment of starting the server, it writes an error:
cannot access local variable 'form' where it is not associated with a value

It is because you haven't defined form for GET method so:
def getAbout(request):
if request.method == 'POST':
form = RouteForm(request.POST)
if form.is_valid():
form.save()
return redirect('some_view_name_to_redirect')
else:
form=RouteForm()
return render(request, 'routes_form/form_page.html', {'form': form})
Note: Models in Django are written in singular form, as Django itself add s as the suffix, so it is better to name the models as City and Route.

Here you passed form = RouteForm(request.POST) object for POST request you need to pass for GET request so, when def getAbout(request) function called with GET request then renders it like this ...
def getAbout(request):
form=RouteForm() # <---- called at GET request
if request.method == 'POST':
form = RouteForm(request.POST) # <---- called at POST request
if form.is_valid():
form.save()
return redirect("/")
return render(request, 'routes_form/form_page.html', {'form': form})

How to take boolean field input from HTML into my Django model?

I have used Django forms for creating users and I extended the default User model by adding a boolean field, so I defined a new form for it. But I couldn't take input from HTML form to this boolean field. Shall I change my HTML form code?
Following are my code samples:
models.py
# accounts.models.py
from django.db import models
from django.contrib.auth.models import User
class SpecialUser(models.Model):
user = models.OneToOneField(User, on_delete=models.CASCADE)
flag = models.BooleanField()
def __str__(self):
return self.title
forms.py
from django import forms
from django.contrib.auth.forms import UserCreationForm
from django.contrib.auth.models import User
from django.forms.widgets import CheckboxInput
from .models import SpecialUser
class RegisterForm(UserCreationForm):
email = forms.EmailField()
class Meta:
model = User
fields = ["username", "email", "password1", "password2"]
class SuperUserForm(forms.ModelForm):
class Meta:
model = SpecialUser
fields = ['flag']
widgets = {
'flag': CheckboxInput(attrs={'class': 'flag'}),
}
views.py
def register(request):
if request.method == 'POST':
form = RegisterForm(request.POST)
sp_form = SuperUserForm(request.POST)
if form.is_valid() and sp_form.is_valid():
user = form.save()
sp_form = sp_form.save(commit=False)
sp_form.user = user
sp_form.save()
messages.success(request, 'Account created!')
return redirect('login')
else:
form = RegisterForm()
sp_form = SuperUserForm()
messages.warning(request, 'Your account cannot be created.')
return render(request, 'register.html', {'form': form})
HTML form code:
<form method="post" class="form-group">
{% csrf_token %}
{{ form|crispy }}
<label for="flag">Special User: </label>
<input id="flag" class="flag" type="checkbox" name="flag">
<button type="submit" class="btn btn-success">Sign up</button>
</form>

In your views.py you're creating a local variable for a SpecialUser form, sp_form, that is neither loaded into the context data nor templated in the HTML form code.
You can load sp_form into the context data by adding it to the context dict passed to render(). This will allow the template to see the variable. For example:
return render(request, 'register.html', {'form': form, 'sp_form': sp_form})
And then you can render it in the template. For example, underneath the main form:
{{ form|crispy }}
{{ sp_form|crispy }}

For starters this is generally not how you would want to extend the user model in a Django application. You would want to inherit from AbstractUser and add your fields to that model and run migrations. At least in this case, that would be ideal, then you could simply define the field on your RegisterForm.fields and let {{ form|crispy }} render the form for you. Naturally, you could call form.save() and move on with your life.
To clarify why this may not be working, it is generally not good practice to render your own fields for a form unless absolutely necessary. If you insist on doing it this way, note that Django prefixes the id with id_ so in your case it would be <label for="id_name">...</label> and <input id="id_flag" ...

Unable to add data to databse from models forms django

I am trying to send data from django forms to backend sqlite3. But I am unable to do so. I am not also getting any error or warning that help me to sort it out.
Here is models.py file
from django.db import models
GENDER_CHOICES = [
('Male', 'M'),
('Female', 'F')]
class upload(models.Model):
name = models.CharField(max_length=100)
gender = models.CharField(max_length=10, choices=GENDER_CHOICES)
phone = models.CharField(max_length=50,null=True)
email= models.EmailField(max_length=50,null=True)
file=models.FileField(upload_to='uploads/')
def __str__(self):
return self.name
here is forms.py file
from django.forms import ModelForm
from .models import upload
class uploadForm(ModelForm):
class Meta:
model = upload
fields = ['name', 'gender', 'phone', 'email','file']
Here is view.py file
from django.shortcuts import render
from .forms import uploadForm
from django.shortcuts import render
def home(request):
if request.method == 'POST':
form = uploadForm()
if form.is_valid():
form=form.save()
return HttpResponseRedirect('/')
else:
form = uploadForm()
return render(request,'home.html',{'print':form})
I am unable to understand where is the issue
This is how template file look like
<form method="post">
{% csrf_token %}
{{ print.as_p }}
<input type="submit" value="Submit">
</form>
EDIT
This issue is with FileField, I removed it, and it start saving in django database. What I want is to save file in media folder and other data in database
I also added enctype="multipart/form-data" in form

I don't think your actually sending anything to the database.
Where is says form = uploadForm() you need state you want the posted data to be sent. so this needs to be form = uploadForm(request.POST) it should then work I believe. Also when saving the form, remove the form=form.save() and leave it as form.save()
Try it out and let us know?

Solution to my post
For handling files, I need to add encryption type to my form as
enctype="multipart/form-data"
Once I added that, to access the files I should use request.FILES along with request.POST
So now I have this home function in views.py file
def home(request):
if request.method == 'POST':
form = uploadForm(request.POST,request.FILES)
if form.is_valid():
form.save()
return HttpResponseRedirect('/')
else:
form = uploadForm()
return render(request,'home.html',{'print':form})
and my template form looks like
<form action="" method="post" enctype="multipart/form-data">
{% csrf_token %}
{{ print.as_p }}
<input type="submit" value="Submit">
</form>
Credit : https://youtu.be/Rr1-UTFCuH4?t=244

Django: ModelForm and show data on the same url

I'm new to django and trying to create my first app and I think I might need some little help :)
I have a ModelForm on a site to submit and want to show the data on the same page. I'm having trouble to set up two functions on the same page, I think i might have to use a class and set it in urls.py but I'm not able to make it work :( the code looks like this:
forms.py:
from django import forms
from .models import Eintrag
class NameForm(forms.ModelForm):
class Meta:
model = Eintrag
fields = ['Anmeldung', 'Essen']
urls.py
from django.urls import path
from . import views
app_name = 'form'
urlpatterns = [
path('', views.get_name, name='form'),
]
views.py
from django.shortcuts import render
from django.utils import timezone
from django.contrib.auth.decorators import login_required
from .forms import NameForm
from .models import Eintrag
#login_required()
def get_name(request):
# if this is a POST request we need to process the form data
if request.method == 'POST':
# create a form instance and populate it with data from the request:
form = NameForm(request.POST)
# check whether it's valid:
if form.is_valid():
eintrag = form.save(commit=False)
# process the data in form.cleaned_data as required
# ...
# redirect to a new URL:
eintrag.Name = request.user # Set the user object here
eintrag.pub_date = timezone.now() # Set the user object here
eintrag.save()
return render(request, 'form/name.html', {'form': form})
# if a GET (or any other method) we'll create a blank form
else:
form = NameForm()
return render(request, 'form/name.html', {'form': form})
def post_list(request):
posts = Eintrag.objects.all()
return render('form/post_list.html', {'posts': posts})
name.html
...
{% include "form/post_list.html" %}
<form action="/form/" method="post">
{% csrf_token %}
{{ form }}
<input type="submit" value="Submit" />
</form>
...
post_list.html
{% for post in posts %}
{{ post }}
{% endfor %}
So the problem is in urls.py only get_name is handled and I'm clueless how I should include post_list. I rather not want to use different url's, do I have to?
Thanks for any help and advice!

You don't need a separate URL or view for the list. Just include the queryset in the context of your get_name view.
posts = Eintrag.objects.all()
return render(request, 'form/name.html', {'form': form, 'posts': posts})

with [Class Based View] it would be better.
But with your view, you can send multiple data via context.
#login_required()
def get_name(request):
# if this is a POST request we need to process the form data
if request.method == 'POST':
# create a form instance and populate it with data from the request:
''' codes '''
eintrag.save()
return HttpResponseRedirect(request.path) # generate an empty form
# if a GET (or any other method) we'll create a blank form
else:
form = NameForm()
posts = Eintrag.objects.all() # the queryset is here, and sent via context
return render(request, 'form/name.html', {'form': form,'posts':posts})
I your html remain the same, but keep your form action='' empty
{% include "form/post_list.html" %}
<form action="" method="post">
{% csrf_token %}
{{ form }}
<input type="submit" value="Submit" />
</form>

Input in forms not getting through in Django

I'm following Mike Hibbert's tutorial on links. The site works perfectly fine, however, the input I put in the form is not being updated or transmitted in the database.
from forms import LocationForm
from django.http import HttpResponseRedirect
from django.core.context_processors import csrf
from django.shortcuts import render_to_response
from django.http import HttpResponse
from core.models import Location
from django.shortcuts import render
class LocationListView(ListView):
model = coremodels.Location
template_name='location/list.html'
def create2(request):
if request.method =='POST':
form = LocationForm(request.POST)
if form.is_valid():
form.save
return HttpResponseRedirect('/location/')
else:
form = LocationForm()
args = {}
args.update(csrf(request))
args['form'] = form
return render_to_response('location/create_location.html', args)
my models.py
class Location(models.Model):
title = models.CharField(max_length=300)
description = models.TextField(null=True, blank=True)
address = models.TextField(null=True, blank=True)
hours = models.TextField(null=True, blank=True)
my create_location.html:
{% block sidebar %}
<ul>
<li> Cancel</li>
</ul>
{% endblock %}
<form action="" method="post"> {% csrf_token %}
<ul>
{{form.as_ul}}
</ul>
and finally my forms.py
from django import forms
from models import Location
class LocationForm (forms.ModelForm):
class Meta:
model = Location
fields =('title', 'description', 'address')
<input type="submit" name="submit" value="create location">
</form>
No error or anything, site works perfect, however if I click on create new location and try submit a new location on the create_location.html it goes back to the locations (list.html) but without the new one.
I also tried updating the views with the code from the documentation
return render(request, 'location/create_location.html',{'form': form})
but didn't work.
What do I do wrong?
Thanks in advance

def create2(request):
if request.method =='POST':
form = LocationForm(request.POST)
if form.is_valid():
form.save
You're not calling form.save(), you're just "stating" the function name (which here does nothing).
Use
def create2(request):
if request.method =='POST':
form = LocationForm(request.POST)
if form.is_valid():
form.save()
and you should be good to go.