Fix get args construction when there are multiple lists on the page
It is now possible to go back and forward through the liast, and
specify the limit (both offset and limit can be done per list).
The JS driving the list boxes is buggy, if visiting an url like:
http://localhost:8080/notification/list?limit_0=10
And then change the limit in the second checkbox, it directs to:
http://localhost:8080/notification/list?limit_1=25
Whereas it should redirect to:
http://localhost:8080/notification/list?limit_0=10&limit_1=25
The logic _does_ work properly when the limit of the changed list
is already present in the url.
Patch by: Sverre Rabbelier
"""
Utility functions for handling images.
Requires PIL, as you might imagine.
"""
from django.core.files import File
class ImageFile(File):
"""
A mixin for use alongside django.core.files.base.File, which provides
additional features for dealing with images.
"""
def _get_width(self):
return self._get_image_dimensions()[0]
width = property(_get_width)
def _get_height(self):
return self._get_image_dimensions()[1]
height = property(_get_height)
def _get_image_dimensions(self):
if not hasattr(self, '_dimensions_cache'):
self._dimensions_cache = get_image_dimensions(self)
return self._dimensions_cache
def get_image_dimensions(file_or_path):
"""Returns the (width, height) of an image, given an open file or a path."""
from PIL import ImageFile as PILImageFile
p = PILImageFile.Parser()
if hasattr(file_or_path, 'read'):
file = file_or_path
else:
file = open(file_or_path, 'rb')
while 1:
data = file.read(1024)
if not data:
break
p.feed(data)
if p.image:
return p.image.size
return None