def get_context_data(self, **kwargs):
"""
Retrieves the context data of this view
"""
# We would like to add years to our index to enable filterbuttons
context = super(GalleryIndex, self).get_context_data(**kwargs)
years = set()
total_disk_usage = 0
# We cannot re-use the self.queryset, as it contains cached instances that might be deleted,
# thus causing the file size summation to fail due to missing files.
for img in ResponsiveImage.objects.all():
years.add(img.timestamp.year)
if img.id:
try:
total_disk_usage += img.sizeof_total_raw()
except OSError as e:
getLogger(__name__).error('GalleryIndex file summation on missing file: %s' % e)
# Filter out potential ResponsiveImage objects that have orphan file references
context['images'] = [i for i in context['images'] if i.file_status_ok()]
# Add query filters and some statistics on disk usage
context['years'] = years
context['tags'] = sorted(set(tag.tag.name for tag in TaggedItem.objects.filter(
content_type=ContentType.objects.get_for_model(ResponsiveImage)
).order_by('tag__name')))
context['disk_usage'] = humanize_size(total_disk_usage)
return context
def sizeof_total(self):
"""
Returns a human readable string representation of the total disk usage.
"""
total = self.sizeof_total_raw()
return humanize_size(total)
def sizeof_total(self):
return humanize_size(self.image.size + self.thumbnail.size)
def sizeof_original(self):
return humanize_size(self.image.size)