Django 1.8 not using Jinja2 template engine

I have followed the instructions on using jinja2 with django1.8. --->

#settings.py

TEMPLATES = [
    {

        'BACKEND': 'django.template.backends.jinja2.Jinja2',
        'DIRS': [
            normpath(join(DJANGO_ROOT, 'templates/jinja2')),
        ],
        'APP_DIRS': True,
        'OPTIONS': {
            'environment': 'kuyuweb_dj_1_8.jinja2.environment',
        },
    },
    {

        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [],
        'APP_DIRS': True,
        'OPTIONS': {
            'context_processors': [
                'django.contrib.auth.context_processors.auth',
                'django.template.context_processors.debug',
                'django.template.context_processors.i18n',
                'django.template.context_processors.media',
                'django.template.context_processors.static',
                'django.template.context_processors.tz',
                'django.contrib.messages.context_processors.messages',
                'django.core.context_processors.request',
            ],
        },
    },
]

I have a .py file including environment -->

from django.contrib.staticfiles.storage import staticfiles_storage
from django.core.urlresolvers import reverse
from jinja2 import Environment


def environment(**options):
    env = Environment(**options)
    env.globals.update({
        'static': staticfiles_storage.url,
        'url': reverse,
    })
    return env

and in my application folder i have templates/jinja2 folder. I have created a simple view as:

def home(request):

    works = Work.objects.filter(publish=True).order_by('-created_at')[:8]

    return render(request, 'jinja2/home.html', {'works':works })

But for example when i try to use jinja2 template tag as {{ loop.index }} it does not work. {{ forloop.counter }} is still working.

Is there something that i miss?

Copyright Notice：Content Author:「ratata」，Reproduced under the CC 4.0 BY-SA copyright license with a link to the original source and this disclaimer.
Link to original article：https://stackoverflow.com/questions/32521189/django-1-8-not-using-jinja2-template-engine