def get_save_comment(self):
comments = []
short_comments = []
previous = self.instance.pk and self.instance.tags or None
d = TagsFieldDiff(previous, self.cleaned_data['tags'])
diff = d.get_diff()
deleted = ['"%s"' % t.name for t in diff['deleted']]
added = ['"%s"' % t.name for t in diff['added']]
if deleted:
tag_name_pluralized = self.pluralize_tag(deleted)
comments.append(ungettext(
'removed %(name)s %(deleted)s.',
'removed %(name)s %(deleted)s.',
len(deleted)
) % {
'deleted': ', '.join(deleted),
'name': tag_name_pluralized
}
)
short_comments.append(ungettext(
'removed %(count)i %(name)s.',
'removed %(count)i %(name)s.',
len(deleted)
) % {
'count': len(deleted),
'name': tag_name_pluralized
}
)
if added:
tag_name_pluralized = self.pluralize_tag(added)
comments.append(ungettext(
'added %(name)s %(added)s.',
'added %(name)s %(added)s.',
len(added)
) % {
'added': ', '.join(added),
'name': tag_name_pluralized
}
)
short_comments.append(ungettext(
'added %(count)i %(name)s.',
'added %(count)i %(name)s.',
len(added)
) % {
'count': len(added),
'name': tag_name_pluralized
}
)
if not comments:
return _('no changes made')
comments = _(' and ').join(comments)
# with lots of tags, this can get too long for db field
if len(comments) > 140:
return _(' and ').join(short_comments)
return comments
