Is it possible to render 2 queryset in ListView? - django

Question

I am new to django and recently read a tutural that describes the usage of class based view. But when I try to render 2 different queryset (all data and filterd data) to the same template, I can't find the solution for display 2 different queryset. Can anyone suggest the best solution about this?
I know writing the function based view is much easy for this, but I hope it can be done by Class based view, thank you
#in view.py
from django.views.generic import ListView
from books.models import Book
class BookListView(generic.ListView):
model = Book
context_object_name = 'my_book_list'
queryset = Book.objects.all()
template_name = 'books/my_arbitrary_template_name_list.html'
# queryset = Book.objects.filter(title='war')?
#in templage.py
#Main content
<div class="main_content">
<h1>All War</h1>
<ul>
{% for book in book_list %}
<li>
{{book.title}}
</li>
{% for endfor %}
</ul>
</div>
#Sidebar
<div class="sidebar">
<h1>All War</h1>
<ul>
{% for book in book_list %}
<li>
{{book.title}}
</li>
{% for endfor %}
</ul>
</div>

Answer 1

You should look into get_context_data to add additional queries you want.
The view might look something like this
class BookListView(generic.ListView):
model = Book
context_object_name = 'my_book_list'
queryset = Book.objects.all()
template_name = 'books/my_arbitrary_template_name_list.html'
def get_context_data(self, **kwargs):
context = super(BookListView, self).get_context_data(**kwargs)
context['second_queryset'] = # YOUR QUERY HERE
return context
For this example the second query is second_queryset and it can be accessed in the html template as {{second_queryset}}. You can add more if you did the same for more queries.
def get_context_data(self, **kwargs):
context = super(BookListView, self).get_context_data(**kwargs)
context['second_queryset'] = # YOUR QUERY HERE
context['third_queryset'] = # YOUR QUERY HERE
...
return context
You can learn about it more in here.