How can I limit django-taggit to accept only lowercase words?

I'm using django-taggit. I'd like to have all tags in lowercase, also set a range for t开发者_如何学Cag numbers (say between 1 and 5, just like stackoverflow). Is there any way to do it easily with django-taggit? Thanks!

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You might want to check out this branch. https://github.com/shacker/django-taggit it has a FORCE_LOWERCASE setting.

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It's pretty easy to do with django-taggit. Subclass TagBase and enforce the lowercase constraint in the save method. The rest is boiler point so TaggableManager can use your subclass.

class LowerCaseTag(TagBase):
    def save(self, *args, **kwargs):
        self.name = self.name.lower()
        super(LowerCaseTag, self).save(*args, **kwargs)

class LowerCaseTaggedItem(GenericTaggedItemBase):
    tag = models.ForeignKey(LowerCaseTag, related_name="tagged_items")

class YourModel(models.Model):
    tags = TaggableManager(through=LowerCaseTaggedItem)

You can also enforce a range limit for tag numbers in the save method.

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Old question but now there is the following setting to deal with case insensitive tags:

TAGGIT_CASE_INSENSITIVE = True

If you want django-taggit to be CASE-INSENSITIVE when looking up existing tags, you’ll have to set the TAGGIT_CASE_INSENSITIVE setting to True (False by default):

TAGGIT_CASE_INSENSITIVE = True

Source: https://django-taggit.readthedocs.io/en/latest/getting_started.html