Django admin getting parent model's class name within an inline admin class

Question

Below is a working code. I am creating models that can have multiple images, with using generic fields. And i am using inlines at the admin side. I need a way to get the model's (that can have multiple images ) class name within the inlineAdmin class in order to make this system more portable...

#model mediaalbums
class MediaAlbum(models.Model):
    content_type = models.ForeignKey(ContentType, null=True, blank=True)
    media_type = models.CharField(max_length=5, choices= MEDIA_TYPE_CHOICES ) 
    name = models.CharField(unique = True, max_length=50)

class ModelImage(Media): 
    album = models.ForeignKey(MediaAlbum, null=True, blank=True, limit_choices_to = {'media_type': 'image'})
    file = ImageField(upload_to=get_path) 
    content_type = models.ForeignKey(ContentType)
    object_id = models.PositiveIntegerField()
    content_object = generic.GenericForeignKey('content_type', 'object_id') 

#model sections
class Work(models.Model):
    images = generic.GenericRelation(ModelImage)

#admin
class ModelImageInline(generic.GenericStackedInline):
    model = ModelImage
    def formfield_for_foreignkey(self, db_field, request=None, **kwargs):
        field = super(ModelImageInline, self).formfield_for_foreignkey(db_field, request, **kwargs)
        if db_field.name == 'album':
                # for now i am getting the model's (that can have any number of images )           class name from the model's admin class' request object
                # but i do not want to get it from there
                className = request.className
                field.queryset = field.queryset.filter(content_type__name=className)    #building__exact = request._obj_
        return field


class WorkAdmin(TranslationAdmin):
    inlines = [ModelImageInline ]
    def get_form(self, request, obj=None, **kwargs):
        # pass the class name to inline class
        request.className = 'work'
        return super(WorkAdmin, self).get_form(request, obj, **kwargs)

I did'nt understand what are you really trying to do. Do you want the parent class of what? — Fernando Freitas Alves
– Fernando Freitas Alves, Commented Apr 16, 2013 at 14:04
Looks like album is a ForeignKey to an Album model which has a Generic key. However I don't understand, does the current code work ? — Steve K
– Steve K, Commented Apr 16, 2013 at 14:36
Code works fine... I have edited my post in order to be clearer. — ratata
– ratata, Commented Apr 16, 2013 at 15:16

ratata · Accepted Answer · 2013-04-17 13:37:00Z

4

ANSWER : use self.parent_model.__name__ within the inline class.

edited Apr 17, 2013 at 13:37

answered Apr 17, 2013 at 13:28

ratata

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Comments

Danny W. Adair · Accepted Answer · 2013-04-16 22:16:22Z

1

parent_class = db_field.rel.to
parent_meta = parent_class._meta
app_label, object_name = parent_meta.app_label, parent_meta.object_name

answered Apr 16, 2013 at 22:16

Danny W. Adair

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