11👍
✅
You do need a custom template tag, but you could install django-mathfilters, which provides such basic operations:
{% load mathfilters %}
...
{{banana.price|mul:0.21}}
Taken from the mathfilters page, the included operations are:
- sub – subtraction
- mul – multiplication
- div – division
- abs – absolute value
- mod – modulo
‘Add’ is provided in Django as standard.
1👍
You can use built-in widthratio template tag:
For creating bar charts and such, this tag calculates the ratio of a
given value to a maximum value, and then applies that ratio to a
constant.
{% widthratio banana.price 100 21 %}
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Source:stackexchange.com