Re: Admin list object, display fields from a fk object

I've updated a little models ( OneToOne field is better for your case) Take a look at
https://docs.djangoproject.com/en/dev/ref/models/fields/

result model is :
class B(models.Model):
     """ Model B"""
     keyfield = models.OneToOneField('mymodel.A')
     name_b   = models.CharField(max_length=20)
     def __unicode__(self):
        
         return "%s, %s" % (self.name_b, A.objects.get(id=self.id).name_a)

result output :

serg@debian:~/project/linkmodels/modeltest$ python manage.py  syncdb
Creating tables ...
Installing custom SQL ...
Installing indexes ...
Installed 0 object(s) from 0 fixture(s)
serg@debian:~/project/linkmodels/modeltest$ python manage.py  shell
Python 2.7.3 (default, Mar  5 2013, 01:19:40)
Type "copyright", "credits" or "license" for more information.

IPython 0.13.2 -- An enhanced Interactive Python.
?         -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help      -> Python's own help system.
object?   -> Details about 'object', use 'object??' for extra details.

In [1]: from mymodel.models import A, B

In [2]: A.objects.all()
Out[2]: [<A: object_A>]

In [3]: B.objects.all()
Out[3]: [<B: object_B, object_A>]

 I'm not using admin panel . I'm using generic view for better control :-) 

Many thanks,

Serge


+380 636150445
skype: skhohlov

On Tue, May 7, 2013 at 6:56 PM, alexandrerua@gmail.com <alexandrerua@gmail.com> wrote:

Thank you for your answer, that i managed to achive,

what I want is to display on the admin object list of object B, display name_B and name_A

Anyway

Thanks

Alex

Terça-feira, 7 de Maio de 2013 13:43:59 UTC+1, Sergiy Khohlov escreveu:

this  not hard :

from django.db import models

# Create your models here.

class A(models.Model):
     """ model A """
     name_a   = models.CharField(max_length=20)

     def __unicode__(self):
         return self.name_a

class B(models.Model):
     """ Model B"""
     keyfield = models.ForeignKey('mymodel.A')
     name_b   = models.CharField(max_length=20)
     def __unicode__(self):
        
         return self.name_b



serg@debian:~/project/linkmodels/modeltest$ python manage.py  shell
Python 2.7.3 (default, Mar  5 2013, 01:19:40)
Type "copyright", "credits" or "license" for more information.

IPython 0.13.2 -- An enhanced Interactive Python.
?         -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help      -> Python's own help system.
object?   -> Details about 'object', use 'object??' for extra details.

In [1]: from mymodel.models import A, B

In [2]: A.objects.all()
Out[2]: []

In [3]: object_A = A('object_A')

In [4]: A.objects.all()
Out[4]: []
In [5]: object_A.save()


In [6]: object_B = B(name_b = 'object_B')

In [7]: object_B.keyfield = object_A

In [8]: object_B.save()

In [9]: B.objects.all()
Out[9]: [<B: object_B>]

In [10]: B.objects.filter(id=1)
Out[10]: [<B: object_B>]

In [11]: B.objects.filter(id=1)[0]
Out[11]: <B: object_B>

In [12]: B.objects.filter(id=1)[0].name_b
Out[12]: u'object_B'

In [13]: B.objects.filter(id=1)[0].keyfield
Out[13]: <A: object_A>

In [14]: B.objects.filter(id=1)[0].keyfield.name_a
Out[14]: u'object_A'

Many thanks,

Serge


+380 636150445
skype: skhohlov

On Tue, May 7, 2013 at 11:43 AM, alexan...@gmail.com <alexan...@gmail.com> wrote:

Hi

class A(models.Model):

  f1=...

  f2=...

  f3=...

class B(models.Model)

  f4=Foreignkey(A)

  f5=...

  f6=...

class BAdmin(admin.ModelAdmin)

  list_display= (f4,f4__f2,f4__f3)     # this does not work

How do I in the list display ob objects B, diaplay some fields from A linked by the foreign key.

this syntax works for filter in class BAdmin!

Regards

Alexandre Rua

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