Access constants in settings.py from templates in Django

djangodjango-settingsdjango-templates

I have some stuff in settings.py that I'd like to be able to access from a template, but I can't figure out how to do it. I already tried

{{CONSTANT_NAME}}

but that doesn't seem to work. Is this possible?

Best Answer

If it's a value you'd like to have for every request & template, using a context processor is more appropriate.

Here's how:

  1. Make a context_processors.py file in your app directory. Let's say I want to have the ADMIN_PREFIX_VALUE value in every context:

    from django.conf import settings # import the settings file
    
    def admin_media(request):
        # return the value you want as a dictionnary. you may add multiple values in there.
        return {'ADMIN_MEDIA_URL': settings.ADMIN_MEDIA_PREFIX}
    
  2. add your context processor to your settings.py file:

    TEMPLATES = [{
        # whatever comes before
        'OPTIONS': {
            'context_processors': [
                # whatever comes before
                "your_app.context_processors.admin_media",
            ],
        }
    }]
    
  3. Use RequestContext in your view to add your context processors in your template. The render shortcut does this automatically:

    from django.shortcuts import render
    
    def my_view(request):
        return render(request, "index.html")
    
  4. and finally, in your template:

    ...
    <a href="{{ ADMIN_MEDIA_URL }}">path to admin media</a>
    ...