Hi guys,
from the docs I thought the following should work to get the
insertion_order as default (to be recognized by serialiser etc.). The
commeted lines are other unsuccessful attemps:
class Thingie(models.Model):
obj_id = models.CharField(max_length=32, primary_key=True)
children = models.ManyToManyField('Thingie', blank=True,
null=True,
symmetrical=False,
through="OrderedThingieChild")
#class Meta:
#ordering = ["thingie_from__insertion_order"]
class ThingieChild(models.Model):
thingie_from = models.ForeignKey(Thingie,
related_name='thingie_from')
thingie_to = models.ForeignKey(Thingie, related_name='thingie_to')
insertion_order = models.IntegerField()
#class Meta:
#ordering = ["insertion_order"]
class OrderedThingieChild(ThingieChild):
class Meta:
ordering = ordering = ["insertion_order"]
proxy = True
# Usage:
# ----------
import uuid
def get_id():
return uuid.uuid1().hex
def test_m2m_ordering():
thing_1 = Thingie.objects.create(obj_id=get_id())
thing_2 = Thingie.objects.create(obj_id=get_id())
thing_3 = Thingie.objects.create(obj_id=get_id())
thing_4 = Thingie.objects.create(obj_id=get_id())
OrderedThingieChild.objects.create(thingie_from=thing_1,
thingie_to=thing_4,
insertion_order=2)
OrderedThingieChild.objects.create(thingie_from=thing_1,
thingie_to=thing_3,
insertion_order=1)
OrderedThingieChild.objects.create(thingie_from=thing_1,
thingie_to=thing_2,
insertion_order=0)
How can I specify the default ordering of m2m relations?
Cheers,
Jan
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