def refresh_thumbnails(self, request, queryset):
generated = 0
errors = 0
for task in queryset:
if task.is_file():
filename = task.file_attachment.get_full_path_and_filename()
try:
thumbnail_filename = create_file_thumbnail(filename)
except ThumbnailRenderingException:
errors += 1
continue
generated += 1
task.cache_file_attachment_thumbnail_url = \
media_path_to_url(thumbnail_filename)
task.save()
self.message_user(request,
"Generated {} thumbnail(s). {} error(s).".format(
generated, errors))
def new(request, task_id=None, is_file=None, is_lecture=None):
"""
New Task and Edit Task
+ New TaskFile and Edit TaskFile
"""
content_type = ContentType.objects.get_for_model(Task)
if task_id:
task = get_object_or_404(Task.objects.select_related('content'), pk=task_id)
perm = task.get_user_permissions(request.user)
if EDIT not in perm:
return 403
math_content = task.content
edit = True
is_file = task.is_file()
is_lecture = task.is_lecture
else:
perm = []
task = math_content = None
edit = False
# Make sure each lecture is a file.
assert is_lecture and is_file or not is_lecture
form_class = TaskLectureForm if is_lecture \
else (TaskFileForm if is_file else TaskForm)
math_content_label = 'Opis' if is_file else None # else default
if request.method == 'POST':
old_hidden = getattr(task, 'hidden', -1)
old_solvable = getattr(task, 'solvable', -1)
# Files can have blank description (i.e. math content)
task_form = form_class(request.POST, instance=task, user=request.user)
math_content_form = MathContentForm(request.POST, instance=math_content,
blank=is_file, label=math_content_label, auto_preview=False)
attachment_form = is_file and not edit \
and AttachmentForm(request.POST, request.FILES)
if task_form.is_valid() and math_content_form.is_valid() \
and (not attachment_form or attachment_form.is_valid()):
task = task_form.save(commit=False)
math_content = math_content_form.save()
if not edit:
if attachment_form:
attachment, attachment_form = check_and_save_attachment(
request, math_content)
task.file_attachment = attachment # This is a file.
path = attachment.get_full_path_and_filename()
try:
thumbnail_path = create_file_thumbnail(path)
task.cache_file_attachment_thumbnail_url = \
media_path_to_url(thumbnail_path)
except ThumbnailRenderingException:
pass
# Immediately remember file url, so that we don't have to
# access Attachment table to show the link.
task.cache_file_attachment_url = attachment.get_url()
else:
task.file_attachment = None # This is a task.
if is_file:
task.cache_file_attachment_url = task.file_attachment.get_url()
if not edit:
task.author = request.user
task.content = math_content
task.save()
# Do not call task_form.save_m2m()!
set_tags(task, task_form.cleaned_data['tags'])
# TODO: signals!
if not edit or old_hidden != task.hidden \
or old_solvable != task.solvable: \
invalidate_folder_cache_for_task(task)
# send action if creating a new nonhidden task
if not edit:
# TODO: signals!
type = _action.LECTURE_ADD if is_lecture \
else (_action.FILE_ADD if is_file else _action.TASK_ADD)
_action.add(request.user, type,
action_object=task, target=task)
# TODO: izbrisati task_new_finish.html i url
#return HttpResponseRedirect('/task/%d/' % task.id if edit else '/task/new/finish/')
return HttpResponseRedirect(task.get_absolute_url())
else:
task_form = form_class(instance=task)
math_content_form = MathContentForm(instance=math_content,
blank=is_file, label=math_content_label, auto_preview=False)
attachment_form = is_file and not edit and AttachmentForm()
forms = [task_form, math_content_form]
if attachment_form:
forms.append(attachment_form)
data = get_task_folder_data(task, request.user) if task else {}
data.update({
'action_url': request.path,
'bulk_add_url': '/task/new/bulk/',
'can_edit_permissions': EDIT_PERMISSIONS in perm,
'content_type': content_type,
'edit': edit,
'forms': forms,
'is_file': is_file,
'is_lecture': is_lecture,
'lectures_folder_url': settings.LECTURES_FOLDER_URL,
'task_name': task.name if task else None, # Convenience.
'task': task,
})
return data
