django-mptt looks great, I totally forgot it existed. It seems I visited the
project's website ages ago, but I honestly don't recall it.
As for django-treebeard, I didn't like the API, docs and examples. Actually,
the examples don't even work, so I was a little worried about using it.
I'll give mptt a whirl, thanks a billion.
Cheers,
AT
On Thu, Jul 21, 2011 at 10:12 AM, Daniel Roseman <dan...@roseman.org.uk>wrote:
> On Tue, Jul 19, 2011 at 2:58 PM, Andre Terra <andre...@gmail.com> wrote:
>>
>>> Hello, everyone
>>>
>>> Assume the following models (dpaste.com [1]):
>>>
>>> class Account(models.Model):
>>> """
>>> Account model for categorizing entries from each SAP import,
>>> and eventually sorting, grouping, filtering data.
>>>
>>> """
>>> code = models.CharField(max_length=**255, primary_key=True)
>>>
>>> group = models.ForeignKey('**AccountGroup', blank=True, null=True,
>>> related_name='groups')
>>>
>>> description = models.CharField(max_length=**512, blank=True,
>>> null=True)
>>>
>>>
>>> class AccountGroup(models.Model):
>>> name = models.CharField(max_length=**512, blank=True, null=True,
>>> verbose_name=_('Name'))
>>>
>>> parent = models.ForeignKey('**AccountGroup', blank=True, null=True,
>>> related_name='children')
>>>
>>> is_subgroup = models.BooleanField(default=**False, editable=False)
>>>
>>> def save(self, *args, **kwargs):
>>> self.is_subgroup = False
>>>
>>> if self.parent is not None:
>>> self.is_subgroup = True
>>>
>>> return super(AccountGroup, self).save(*args, **kwargs)
>>>
>>> I would like to be able to manually specify an order for AccountGroups in
>>> relation to their siblings, so that I can have a final result of something
>>> like the following pic (which describes a set of groups and accounts, with
>>> the latter being the rightmost, M000000000-format codes.
>>>
>>> http://img200.imageshack.us/**img200/9423/groupsandaccounts.**png<http://img200.imageshack.us/img200/9423/groupsandaccounts.png>
>>>
>>>
>>> As you can see from the picture, accounts can be located under any number
>>> of groups, and neither Accounts nor AccountGroups are not sorted naturally.
>>>
>>> Short of using something like django-treebeard[3], how can I write a
>>> solution for this use case?
>>>
>>> Thanks in advance for all your help!
>>>
>>>
>>> Cheers,
>>> André Terra
>>>
>>>
>>> [1] http://dpaste.com/hold/571566/
>>> [2] https://docs.djangoproject.**com/en/dev/ref/models/fields/#**
>>> commaseparatedintegerfield<https://docs.djangoproject.com/en/dev/ref/models/fields/#commaseparatedintegerfield>
>>> [3]
>>> https://tabo.pe/projects/**django-treebeard/docs/1.52/<https://tabo.pe/projects/django-treebeard/docs/1.52/>
>>>
>>>
>>
> Well, a pre-order algorithm like MPTT - as provided by django-treebeard or
> django-mptt - *is* the way to go here. You don't say why you don't want to
> go down that route - what's your objection?
> --
> DR.
>
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