Hi,
I am happy with my models, and I'm fine inserting data, what I would like
help with is retrieval.
given a single instance of a Studio() I can get
studio.studiogroup_set.all() which I can then iterate to find the
individual studios and build my resulting list ensuring no duplicates and
not 'studio' itself. All this is working in Python:
choice = self.get_object()
others = []
for set in getattr(choice, "%s_set" % choice.groupname.lower()).all():
for other in getattr(set, choice.view_name()).exclude(pk=choice.pk):
if other not in others:
others.append(other)
for other in others:
print other
but this doesn't seem very elegant and I'm wondering if there's a more
'django' way of doing this.
On Wednesday, January 27, 2016 at 8:36:26 PM UTC, Xristos Xristoou wrote:
>
> your code is correct,where are the problem ?in the admin first add Studio
> and sfter this select on the field studio from class studiogroup one or
> more entries from the class studio so simple,
>
> christos
>
> Τη Τετάρτη, 27 Ιανουαρίου 2016 - 5:50:21 μ.μ. UTC+2, ο χρήστης dave.l
> έγραψε:
>>
>> Hi,
>>
>> I have recently returned to a Django project after a few years and I'm a
>> little rusty on ManyToMany fields.
>>
>> Here's my very simple models:
>>
>>
>> class Studio(models.Model):
>> name = models.CharField(max_length=255, unique=True)
>>
>> class StudioGroup(models.Model):
>> description = models.CharField(max_length=255, unique=True)
>> studio = models.ManyToManyField(Studio)
>>
>>
>> So a bunch of Studio(), which can be in multiple StudioGroups()
>>
>> Given a single instance of a Studio(), I would like a single list of all
>> other studios in all other groups.
>>
>> so if Group1 is A,B,C and Group2 is A,D,E
>>
>> I would like to return B,C,D,E for A.
>>
>> My current solution is entirely in Python (which works), but I'd like a
>> more Django-esque solultion of possible!
>>
>> Thank you,
>>
>>
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