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A query optimization in bda.views.catalogue

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We only need to fetch shows identifiers here:

    FOO.filter(BAR__in=shows)

which can be done using the `values_list` method
This commit is contained in:
Martin Pépin 2017-04-05 20:48:18 +01:00
parent ff9cee5ffc
commit 9ec151e040
1 changed files with 3 additions and 2 deletions
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5
bda/views.py
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@ -672,15 +672,16 @@ def catalogue(request, request_type):
return HttpResponseBadRequest( return HttpResponseBadRequest(
"Bad format: int expected for `id`" "Bad format: int expected for `id`"
) )
shows = tirage.spectacle_set.values_list("id", flat=True)
categories = list( categories = list(
CategorieSpectacle.objects CategorieSpectacle.objects
.filter(spectacle__in=tirage.spectacle_set.all()) .filter(spectacle__in=shows)
.distinct() .distinct()
.values('id', 'name') .values('id', 'name')
) )
locations = list( locations = list(
Salle.objects Salle.objects
.filter(spectacle__in=tirage.spectacle_set.all()) .filter(spectacle__in=shows)
.distinct() .distinct()
.values('id', 'name') .values('id', 'name')
) )