Django bootstrap4 - Parameter "form" should contain a valid Django Form - django

Question

I am getting the following Bootstrap exception
'Parameter "form" should contain a valid Django Form.'
when running the following code from this tutorial:
{% load bootstrap4 %}
<form action="/url/to/submit/" method="post" class="form">
{% csrf_token %}
{% bootstrap_form form %}
{% buttons %}
<button type="submit" class="btn btn-primary">Submit</button>
{% endbuttons %}
</form>
Is the second'form' in 'bootstrap_form form' supposed to reference/point to something? Is it a variable? What is a valid django form? I checked several posts and answers on this issue, but haven't been able to make sense of this error.
EDIT View code:
from django.shortcuts import render
def hello_world(request):
return render(request, 'hello_world.html', {})

Answer 1

I got the same problem and it takes me nearly whole day to figure out.
The Quickstart part of django-bootstrap4 is not very starter-friendly.
{% bootstrap_form form %}
The form is a parameter, which should be transfered from views.py. In your situation, form should be added to return render(request, 'hello_world.html', {})
create a file called forms.py and put following code in it.
(forms.py should be put in the same folder of views.py)
from django import forms
class NameForm(forms.Form):
your_name = forms.CharField(max_length=100)
modify views.py and add the following code:
# ...
from .forms import NameForm
# ...
def hello_world(request):
form = NameForm()
return render(request, 'hello_world.html', {'form': form})
# ...