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for-looptagsdjango-templates

How to add, multiply number variables in a Django template?

The JS snippet I created relies on the forloop.counter variable being available within a {% for key, value in data.items %}..{% endfor %} tag.

Is there a way to use mathematical operators (*, -, +, /) together with the forloop.counter variable?

Solution

  • There is the filter add from the documentation.

    I'm pretty sure there are no built-in way to use the other mathematical operations over numbers in Django templates. You can always make your own however. It is not always a good idea to do so.

    You want to keep your logic inside the views and keep the rendering inside the templates.

    In your case, you should store your counter in a JavaScript variable, and use it in your snippet.