59 lines
2.1 KiB
Python
59 lines
2.1 KiB
Python
from camps.models import Camp
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from django.shortcuts import get_object_or_404
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class CampViewMixin:
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"""
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This mixin makes sure self.camp is available (taken from url kwarg camp_slug)
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It also filters out objects that belong to other camps when the queryset has a camp_filter
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"""
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def setup(self, *args, **kwargs):
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super().setup(*args, **kwargs)
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self.camp = get_object_or_404(Camp, slug=self.kwargs["camp_slug"])
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def get_queryset(self):
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queryset = super().get_queryset()
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# if this queryset is empty return it right away, because nothing for us to do
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if not queryset:
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return queryset
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# do we have a camp_filter on this model
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if not hasattr(self.model, "camp_filter"):
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return queryset
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# get the camp_filter from the model
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camp_filter = self.model.get_camp_filter()
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# Let us deal with eveything as a list
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if isinstance(camp_filter, str):
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camp_filter = [camp_filter]
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for _filter in camp_filter:
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# add camp to the filter_dict
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filter_dict = {_filter: self.camp}
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# get pk from kwargs if we have it
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if hasattr(self, "pk_url_kwarg"):
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pk = self.kwargs.get(self.pk_url_kwarg)
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if pk is not None:
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# We should also filter for the pk of the object
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filter_dict["pk"] = pk
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# get slug from kwargs if we have it
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if hasattr(self, "slug_url_kwarg"):
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slug = self.kwargs.get(self.slug_url_kwarg)
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if slug is not None and (pk is None or self.query_pk_and_slug):
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# we should also filter for the slug of the object
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filter_dict[self.get_slug_field()] = slug
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# do the filtering and return the result
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result = queryset.filter(**filter_dict)
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if result.exists():
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# we got some results with this camp_filter, return now
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return result
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# no camp_filter returned any results, return an empty queryset
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return result
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