@admin.display(ordering='any_item') does not work !

[Serge Alard]

Hello

I have a Sujet that can have sub-Sujet recursively.

Here is a test among several ones that does not work :

class Sujet(models.Model):
    objects = None
    numero = models.PositiveSmallIntegerField()
    titre = models.CharField(max_length=100)
    partie = models.ForeignKey('self', models.CASCADE, blank=True, null=True, db_index=False)

    def __str__(self):
        if self.partie is None:
            s = ''
        else:
            s = str(self.partie)
        s2 = ''
        if len(s) > 0:
            for i, c in enumerate(s):
                if c.isdigit():
                    s2 = s[:(i+2)]
                elif c == ' ': break
                s = s2 + str(self.numero) + '. '
        s += str(self.titre)
        return s

@admin.register(Sujet)

@admin.display(ordering='__str__')
class SujetAdmin(admin.ModelAdmin):
    fields = ('partie', 'numero', 'titre')
    list_display = ('__str__',)

The asked ordering does work. Apparently, it sorts by decreasing order of the Sujet creation.

Serge Alard