Why use management form inside template?

Question

I am reading Django docs and don’t quite understand the comment below about formsets.

Why do I need to be aware to use the management form inside the management template in this example ?

Using a formset in views and templates

Using a formset inside a view is as easy as using a regular Form class. The only thing you will want to be aware of is making sure to use the management form inside the template. Let’s look at a sample view:

from django.forms import formset_factory
from django.shortcuts import render
from myapp.forms import ArticleForm

def manage_articles(request):
     ArticleFormSet = formset_factory(ArticleForm)
     if request.method == 'POST':
        formset = ArticleFormSet(request.POST, request.FILES)
        if formset.is_valid():
            # do something with the formset.cleaned_data
            pass
    else:
        formset = ArticleFormSet()
    return render(request, 'manage_articles.html', {'formset': formset})

# manage_articles.html

<form method="post">
    {{ formset.management_form }}
    <table>
        {% for form in formset %}
        {{ form }}
        {% endfor %}
    </table>
</form>

Answer 1

ManagementForm form is used by the formset to manage the collection of forms contained in the formset.

It is used to keep track of how many form instances are being displayed.

for more detail information see here