Use variable as dictionary key in Django template

djangodjango-templates

I'd like to use a variable as an key in a dictionary in a Django template. I can't for the life of me figure out how to do it. If I have a product with a name or ID field, and ratings dictionary with indices of the product IDs, I'd like to be able to say:

{% for product in product_list %}
     <h1>{{ ratings.product.id }}</h1>
{% endfor %}

In python this would be accomplished with a simple

ratings[product.id]

But I can't make it work in the templates. I've tried using with… no dice. Ideas?

Best Answer

Create a template tag like this (in yourproject/templatetags):

@register.filter
def keyvalue(dict, key):    
    return dict[key]

Usage:

{{dictionary|keyvalue:key_variable}}

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How to get the current URL within a Django template

Django 1.9 and above:

## template
{{ request.path }}  #  -without GET parameters 
{{ request.get_full_path }}  # - with GET parameters

Old:

## settings.py
TEMPLATE_CONTEXT_PROCESSORS = (
    'django.core.context_processors.request',
)

## views.py
from django.template import *

def home(request):
    return render_to_response('home.html', {}, context_instance=RequestContext(request))

## template
{{ request.path }}

Javascript – AngularJS with Django – Conflicting template tags

For Angular 1.0 you should use the $interpolateProvider apis to configure the interpolation symbols: http://docs.angularjs.org/api/ng.$interpolateProvider.

Something like this should do the trick:

myModule.config(function($interpolateProvider) {
  $interpolateProvider.startSymbol('{[{');
  $interpolateProvider.endSymbol('}]}');
});

Keep in mind two things:

mixing server-side and client-side templates is rarely a good idea and should be used with caution. The main issues are: maintainability (hard to read) and security (double interpolation could expose a new security vector - e.g. while escaping of serverside and clientside templating by themselves might be secure, their combination might not be).
if you start using third-party directives (components) that use {{ }} in their templates then your configuration will break them. (fix pending)

While there is nothing we can do about the first issue, except for warning people, we do need to address the second issue.

Best Answer

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How to get the current URL within a Django template

Javascript – AngularJS with Django – Conflicting template tags

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