I have a gallery of images. I've written two views, one pulls the next
image, one the previous. i'd like the views to loop, returning the the
first image when the next method reaches the end an d the last when the
previous method does. The next method loops fine, but the previous
doesn't. Here's the code:
def next(request, picture_id):
artist_id =
Picture.objects.select_related().get(id=picture_id).artist_id
try:
next_picture_id =
Picture.objects.filter(artist__id__exact=artist_id).filter(id__gt=picture_id)[0].id
except IndexError:
next_picture_id =
Picture.objects.filter(artist__id__exact=artist_id)[0].id
picture = get_object_or_404(Picture, pk=next_picture_id)
return render_to_response('artists/picture.html', {'picture':
picture})
def previous(request, picture_id):
artist_id =
Picture.objects.select_related().get(id=picture_id).artist_id
try:
previous_picture_id =
Picture.objects.filter(artist__id__exact=artist_id).filter(id__lt=picture_id)[0].id
except IndexError:
pass
picture = get_object_or_404(Picture, pk=previous_picture_id)
return render_to_response('artists/picture.html', {'picture': picture})
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