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Last month I needed to paginate a Django model formset and I couldn't find the way to do it, but I found posts asking the same question without an answer, so here is my solution:
In the forms.py file:
class MyForm(ModelForm):
class Meta:
model = MyModel
fields = ('description',)
In the views.py file:
FormSet = modelformset_factory(MyModel, form=MyForm, extra=0)
if request.method == 'POST':
formset = FormSet(request.POST, request.FILES)
if formset.is_valid():
formset.save()
return HttpResponse('Formset submited!')
else:
query = MyModel.objects.filter(condition)
paginator = Paginator(query, 10) # Show 10 forms per page
page = request.GET.get('page')
try:
objects = paginator.page(page)
except PageNotAnInteger:
objects = paginator.page(1)
except EmptyPage:
objects = paginator.page(paginator.num_pages)
page_query = MyModel.objects.filter(id__in=[object.id for object in objects])
formset = FormSet(queryset=page_query)
context = {'objects': objects, 'formset': formset}
return render_to_response('template.html', context,
context_instance=RequestContext(request))
You need to create the formset with the objects in the present page, otherwise, when you try to do formset = FormSet(request.POST, request.FILES) in the POST method, Django raises a MultiValueDictKeyError error.
In the template.html file:
{% extends "base.html" %}
{% block content %}
Paginated formset
{% if objects %}
{% if objects.has_previous %}
Previous
{% endif %}
Page {{ objects.number }} of {{ objects.paginator.num_pages }}
{% if objects.has_next %}
next
{% endif %}
{% else %}
There are no objects.
{% endif %} {% endblock %}
