A simple Tag solution for Django using django.contrib.postgres.fields.ArrayField.
Add the ArrayField to your model:
from array_tags.fields import TagField
class MyModel(models.Model):
tags = TagField()
Now you have tags! Values will be stripped and de-duplicated on save.
You can optionally pass lower=True to TagField to lower-case all values before saving.
The model will gain a helper method get_most_like_by_FIELD where FIELD is replaced with the name of the field. This will call the most_like method on the manager, passing the field name and this instances tags.
For convenience, there is also a TagQuerySet which adds three methods:
all_tag_values(name)
Returns a tuple of all the tags in objects in the current queryset from the TagField called name.
count_tag_values(name)
Returns a dict of tags and how many objects have each tag in the queryset.
most_like(name, tags)
Returns a queryset ordered by the number of tags in field name found in tags.
Finally, there is an additional ORM Function Unnest for applying the Postgres Array function Unnest in queries.