def security_hash(self, request, form):
"""
Calculates the security hash for the given HttpRequest and Form instances.
Subclasses may want to take into account request-specific information,
such as the IP address.
"""
return security_hash(form)
def preview_full_clean(form):
"""
In ``preview_post`` stage after running ``full_clean`` on original form
- it drops all file fields and fill-in *_path fields
because after in ``post_post`` stage it wont pass validation anyway,
user doesn't upload file twice
"""
super(form.__class__, form).full_clean()
file_fields = [(fname, field) for fname, field in form.fields.iteritems()
if isinstance(field, forms.FileField)]
for fname, field in file_fields:
tmp_dir = os.path.join(
UPLOAD_DIR,
TODAYS_DIR,
security_hash(form))
mkdir_p(tmp_dir)
upload_cleanup()
upload = form.cleaned_data[fname]
if not upload:
return # just nop
fd_name = os.sep.join((tmp_dir, upload.name))
fd = open(fd_name, 'w')
for chunk in upload.chunks():
fd.write(chunk)
fd.flush()
# required for ImageField: django uses just .read()
# into PIL.Image() - otherwise it will be given empty file
upload.seek(0)
form.fields.pop(fname)
path_fname = fname + PATH_SUFFIX
form.cleaned_data[path_fname] = fd.name # in view
form.data[path_fname] = fd.name # in template, as initial
if isinstance(field, PreviewField):
preview_fname = fname + PREVIEW_SUFFIX
form.cleaned_data[preview_fname] = fd.name # in view
form.data[preview_fname] = fd.name # in template, as initial
