Django pagination after POST

Question

I'm fairly new to Class Based Views and I have a problem.

I implemented get_queryset to return all my users (for testing) and they are returned and pagination works fine (outside get_queryset, I do have "paginate_by" field set).

A user can then search some specific users via POST and the end of post method is:

return render(request, self.template_name, {'objects': some_users})

It works fine, but pagination is lost. What am I doing wrong?

Answer 1

The pagination is done in paginate_queryset, called by get_context_data, called by post (that defaults to a subcall to get) , so you can so something like (given you have a filter method that filters based on post data):

def post(self, request, *args, **kwargs):
    self.queryset = self.filter(self.get_queryset())
    return super(MyView, self).get(request, *args, **kwargs)

the parent post will call get_queryset, that returns your filtered self.queryset, and it will paginate it when calling get_context_data

to not display the queryset on the first get,

def get(self, request, *args, **kwargs):
    return self.self.response_class(
        request=self.request,
        template=self.get_template_names())

the pagination template link should always post to the view instead of the default get so save the search input in the context and change the template for the pagination, with

def get_context_data(self, **kwargs):
     context = super(MyView, self).get_context_data(**kwargs)
     context['search_value'] = self.request.POST.get('search_name', None)
     return context

,

<form action="?page={{ page_obj.previous_page_number }}" method="post">
    {% csrf_token %}
    <input type="hidden" value="{{ search_value }}" name="search_name">
    <button type="submit">&laquo;</button>
</form>

and for the next link:

<form action="?page={{ page_obj.next_page_number }}" method="post">
    {% csrf_token %}
    <input type="hidden" value="{{ search_value }}" name="search_name">
    <button type="submit">&raquo;</button>
</form>

Answer 2

I've used session in order to do this stuff. Now I'm able to do a search by using POST and the pagination is working fine

def MySearch(request):
if request.method == 'POST':
    search_text = request.POST.get('search_string')
    request.session['search'] = search_text
    query_set = MyModel.objects.filter(myattribute__icontains=search_text)
    paginator = Paginator(search, 1)
    page = request.GET.get('page')
    search = paginator.get_page(page)
    return render(request, 'myapp/mytemplate.html', {'page_obj': search})

if request.method == 'GET':
    if 'search' in request.session:
        query_set = MyModel.objects.filter(myattribute__icontains=search_text)
        paginator = Paginator(search, 1)
        page = request.GET.get('page')
        search = paginator.get_page(page)
        return render(request, 'myapp/mytemplate.html', {'page_obj': search})
    else:
        return render(request, 'myapp/mytemplate.html')