Django docs don't cover a through-model case

[Klexus1]

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All versions of django-smart-selects prior to version 1.2.8 are vulnerable to an XSS attack as detailed in issue 171. As a result, all previous versions have been removed from PyPI to prevent users from installing insecure versions. All users are urged to upgrade as soon as possible.

Checklist

^{Put an x in the bracket when you have completed each task, like this: [x]}

• [x ] This issue is not about installing previous versions of django-smart-selects older than 1.2.8. I understand that previous versions are insecure and will not receive any support whatsoever.
• [x ] I have verified that that issue exists against the master branch of django-smart-selects.
• [x ] I have searched for similar issues in both open and closed tickets and cannot find a duplicate.
• [ x] I have debugged the issue to the smart_selects app.
• [ x] I have reduced the issue to the simplest possible case.
• [ x] I have included all relevant sections of models.py, forms.py, and views.py with problems.
• [ x] I have used GitHub Flavored Markdown to style all of my posted code.

Steps to reproduce

Actual behavior

Expected behavior

For the following case, there is no hint how to handle a through model. Example:

class Continent(models.Model):
name = models.CharField(max_length=255)

class Country(models.Model):
continent = models.ManyToMany(Continent, through='CountryToContinent")
name = models.CharField(max_length=255)

class CountryToContinent(models.Model):
continent = models.ForeignKey(Continent)
name = models.ForeignKey(Country)

class Location(models.Model):
continent = models.ForeignKey(Continent)
country = models.ForeignKey(Country)
area = models.ForeignKey(Area)
city = models.CharField(max_length=50)
street = models.CharField(max_length=100)

[zubus]

could you solve it?

[Klexus1]

I did not, I started to use custom templates with jquery ajax requests instead