Values larger than 1/3 of a buffer page cannot be indexed.

[TG1999]

#632 (comment)

[TG1999]

A possible solution that I got https://stackoverflow.com/questions/41971217/values-larger-than-1-3-of-a-buffer-page-cannot-be-indexed-django-error, although this is Postgres specific not Django specific

[TG1999]

As per suggestion from @pombredanne

import hashlib

     def save(self, *args, **kwargs):
        if self.summary:
            self.summary_md5 = hashlib.md5(self.summary.encode('utf-8')).hexdigest()
        super().save(*args, **kwargs)

we could use something like this to hash our summaries

[pombredanne]

#653 has been merged. Thanks!