Django: Order a model by a many-to-many field

Question

I am writing a Django application that has a model for People, and I have hit a snag. I am assigning Role objects to people using a Many-To-Many relationship - where Roles have

Answer 1

Something like this in SQL:

select p.*, max (r.Weight) as HeaviestWeight
from persons p
inner join RolePersons rp on p.id = rp.PersonID
innerjoin Roles r on rp.RoleID = r.id
group by p.*
order by HeaviestWeight desc

Note: group by p.* may be disallowed by your dialect of SQL. If so, just list all the columns in table p that you intend to use in the select clause.

Note: if you just group by p.ID, you won't be able to call for the other columns in p in your select clause.

I don't know how this interacts with Django.