def get_tag(self, tag):
"""
Creates Tag if it doesn't exist, else return existing one
:param tag: tag name
:return: Tag db object
"""
try:
return Tag.objects.get(name=tag)
except Tag.DoesNotExist:
tag = Tag(name=tag)
tag.save()
return tag
def get_or_create_tag(tag_name):
"""
Returns a Tag, which will be either created or retrieved from the
database.
"""
tag_name = tag_name.strip()
if tag_name == '':
raise ValueError('Tag value cannot be empty')
try:
return Tag.objects.get(name=tag_name)
except Tag.DoesNotExist:
tag = Tag(name=tag_name)
tag.save()
return tag
