How to redirect to the previous page in Django after a POST request

Problem: 

I am creating a Django project. There is a navbar where you have a button. Using this button you can go to a page and create new content. I can redirect users to the main page. But, I want them to redirect back to the page where they came from. This is my code: 

def createData(request):
    uw = getuw(request.data.username)
    if request.method =='POST':
    form = AdverForm(request.POST, request.FILES)
    if form.is_valid():
        form.instance.data = request.data
        form.save()
        return HttpResponseRedirect('/', {'username': request.data.username, 'uw': uw})
    args = {}
    args.update(csrf(request))
    args['username'] = request.data.username
    args['form'] = AdverForm()
    args['uw'] = uw
    return  render_to_response('createData.html', args)

So in this article, we are going to learn how to redirect to the previous page in Django after a POST request.

Solution 1: 

You can define a field called next_page in you form and set this to request.path. Using this field you can redirect to the value of this path.

example.html

<form method="POST">
    {% csrf_token %}
    {{ form }}
    <input type="hidden" name="next_page" value="{{ request.path }}">
    <button type="submit">Submit</button>
</form>

view.py

next_page = request.POST.get('next_page', '/')
return HttpResponseRedirect(next_page)

This is how the django.contrib.auth works. You pass through an intermediate page, By using a query string, you can pass the "next_page" value.

link_page.html

<a href="{% url 'your_form_view' %}?next_page={{ request.path|urlencode }}">Let's Go To Form</a>

template.html

<form method="POST">
    {% csrf_token %}
    {{ form }}
    <input type="hidden" name="next_page" value="{{ request.GET.next_page }}">
    <button type="submit">Submit</button>
</form>

Solution 2: 

You can also use the HTTP_REFERER value. But this will not work if use disabled sending referrer information. That means if the user uses private or incognito mode in the browser.

return HttpResponseRedirect(request.META.get('HTTP_REFERER', '/'))

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Hope this solves the problem you are having. If you have any more questions please comment below