[Django]-Passing an object in every Django page

write a template context processor:

#my_context_processors.py

def include_groups(request):
    #perform your logic to create your list of groups
    groups = []
    return {'groups':groups}

then add it in your settings file:

#settings.py

TEMPLATE_CONTEXT_PROCESSORS = (
     "django.core.context_processors.auth",
     "django.core.context_processors.debug",
     "django.core.context_processors.i18n",
     "django.core.context_processors.media",
     "path.to.my_context_processors.include_groups",
)

now a variable groups will be available to you in all your templates

If you need data added to more than one template contexts you should look into achieving that via your own template context processor.

You need to create template context processor to pass an object to each request. Here is some example

#tu_context_processor.py

from setting.models import Business


def include_business(request):
    business = Business.objects.all().last()
    return {'business': business}

in your settings file:

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [TEMPLATE_DIR],
        'APP_DIRS': True,
        'OPTIONS': {
            'context_processors': [
                'django.template.context_processors.debug',
                'django.template.context_processors.request',
                'django.contrib.auth.context_processors.auth',
                'django.contrib.messages.context_processors.messages',
                'core.tu_context_processor.include_business',
            ],
        },
    },
]

now a variable business will be available to you in all your templates
tested in Django 4