Angularjs with Django - Conflicting template tags

javascript

angularjs

django

template-engineering

byNikita Barsukov·Jan 29, 2025

Avoid conflicts between AngularJS and Django template tags by customizing the delimiters used by AngularJS. This can easily be accomplished by configuring AngularJS to use {% raw %}[[ ]]{% endraw %} as its interpolate provider. Here's how you do it in your AngularJS module:

angular.module('myApp', []).config(['$interpolateProvider', function($interpolateProvider) {
  // Who said I can't be unique? Let's unleash my ingenuity!
  $interpolateProvider.startSymbol('{% raw %}[[');
  $interpolateProvider.endSymbol(']]{% endraw %}');
}]);

Now, Angular will interpolate data within [[ ]], leaving Django's beloved {{ }} in peace.

Code-based solution for tag conundrum

Identifying the source of the issue

Let's start by understanding why we might be encountering conflicts. Both AngularJS and Django use {{ }} as their default template tags. However, complications arise when we deal with templates that need to be processed both server-side (Django) and client-side (AngularJS).

Battle-tested solutions

What we have are three robust solutions to defend our land from this invasion of conflicting tags:

Django's {% verbatim %} or {% raw %} command could isolate your AngularJS code, preventing Django from tampering with it. It's quick, but consider the bloat for large codebases.
Creating an 'ng' filter in Django that handles AngularJS tags. It's like hiring a bodyguard for your tags.
Adjust AngularJS tags to peacefully co-exist with Django. Think of it like a treaty between two ancient empires.

Tips for implementing better practices

While changing AngularJS delimiters, remember to:

Consistently apply across all AngularJS modules
Make sure to update every AngularJS template and third-party directive to the new standard
Run thorough tests - accidentally exposing server-side logic on the client-side might make you infamous among hackers!

Surviving in the wild: dealing with AngularJS-Django cohabitation

Handling third-party directives

It's tricky when some third-party directives still think {{ }} is the law of the land. Re-educate them peacefully or find others who respect your rules.

Navigating potential obstacles

As you surf on this new wave, keep these in mind:

Directive compatibility: Ensure your directives acknowledge the new regime.
Performance: Stay vigilant about increasing load times. Maintain the lightning speed of your application!
Security: Yes, those sneaky double interpolations can leak your precious data. Always sanitize your inputs!

Staying ahead of the curve

Stay updated on AngularJS enhancements and make the most of customizations made more accessible. Also, the collective knowledge of the AngularJS community can be a treasure trove of wisdom.

explain-codes / Javascript / Angularjs with Django - Conflicting template tags

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