def save(self, *args, **kwargs):
tag_author = self._get_default_tags_author()
tag_lang = self._get_default_tags_language()
self._default_tags = ", ".join(parse_tag_input(self._default_tags))
new = not bool(self.pk)
if not new:
# FIXME: this two-step approach may delete tags on tags
self.untag_all(author=tag_author)
self.tag(self._default_tags, tag_lang, tag_author)
super(Taggable, self).save(*args, **kwargs)
if new:
self.tag(self._default_tags, tag_lang, tag_author)
def tag(self, name, language, author):
"""Tags this object using a `name` in a specific `language`. The tag
will be marked as authored by `author`.
The `name` can be a list of comma-separated tags. Double quotes can be
used to escape values with spaces or commas. One special case: if there
are no commas in the input, spaces are treated as tag delimiters."""
author = _tag_get_user(author)
language = _tag_get_language(language)
tags = parse_tag_input(name)
for tag_name in tags:
tag = Tag(name=tag_name, language=language, author=author,
content_object=self)
tag.save()
def untag_all(self, name=None, language=None, author=None):
"""untag_all([name], [language], [author])
Untags this object from all tags in a specific `language` or authored
by `author`."""
author = _tag_get_user(author, default=None)
language = _tag_get_language(language, default=None)
ct = ContentType.objects.get_for_model(self.__class__)
kwargs = dict(content_type=ct, object_id=self.id)
if name is not None:
kwargs['name__in'] = parse_tag_input(name)
if language is not None:
kwargs['language'] = language
if author is not None:
kwargs['author'] = author
tags = Tag.objects.filter(**kwargs)
tags.delete()
def untag(self, name, language, author):
"""Untags this object from tags in a specific `language`, authored by
`author`.
The `name` can be a list of comma-separated tags. Double quotes can be
used to escape values with spaces or commas. One special case: if there
are no commas in the input, spaces are treated as tag delimiters."""
author = _tag_get_user(author)
language = _tag_get_language(language)
ct = ContentType.objects.get_for_model(self.__class__)
tags = parse_tag_input(name)
for tag_name in tags:
try:
tag = Tag.objects.get(name=tag_name, language=language,
author=author, content_type=ct, object_id=self.id)
tag.delete()
except Tag.DoesNotExist:
pass # okay, successfully "untagged".
