How to do math in a Django template?


I want to do this:

100 - {{ object.article.rating_score }} 

So for example, the output would be 20 if {{ object.article.rating_score }} equaled 80.

How do I do this at the template level? I don"t have access to the Python code.

Answer rating: 163

You can use the add filter:

{{ object.article.rating_score|add:"-100" }}

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