Django - Add field to queryset to store computation results

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被撕碎了的回忆 2021-02-04 12:39

I\'m pretty new to Django and come from the PHP world. I\'m trying to \'add\' a field to a queryset after computing things, and don\'t know how to do it. In PHP I would just add

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  •  粉色の甜心
    2021-02-04 13:11

    You can set anything on a python object:

    for obj in self.model.objects.all() :
        obj.score = total_score / total_posts
    

    This will work even if obj does not have a score attribute. In the template request it like so:

    {{ obj.score }}
    

    Yes, it's that simple. However, if the calculations you're doing can be done in the database, you should look into annotate.

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