How to do math in a Django template?
Question:
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.
Answers:
Generally it is recommended you do this calculation in your view. Otherwise, you could use the add filter.
You can use the add filter:
{{ object.article.rating_score|add:"-100" }}
Use django-mathfilters. In addition to the built-in add filter, it provides filters to subtract, multiply, divide, and take the absolute value.
For the specific example above, you would use {{ 100|sub:object.article.rating_score }}.
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.
Generally it is recommended you do this calculation in your view. Otherwise, you could use the add filter.
You can use the add filter:
{{ object.article.rating_score|add:"-100" }}
Use django-mathfilters. In addition to the built-in add filter, it provides filters to subtract, multiply, divide, and take the absolute value.
For the specific example above, you would use {{ 100|sub:object.article.rating_score }}.