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契約とサプライヤーの 2 つのモデルがあります。各仕入先は、商品の種類を提供します。これらは次のように定義されています。

class CommodityType(models.Model):
    name = models.CharField(max_length=64)

    def __unicode__(self):
        return self.name

class Supplier(models.Model):
    name = models.CharField(max_length=64)
    type = models.ForeignKey(CommodityType)

    def __unicode__(self):
        return self.name

    class Meta:
        ordering = ['type', 'name']

class Contract(models.Model):
    supplier = models.ForeignKey(Supplier)
    clientNumber = models.CharField(max_length=32)

    def __unicode__(self):
        return u'%s, %s' % (self.supplier, self.clientNumber)

ContractsDjango Admin サイトにのリストを掲載したいと考えています。のそれぞれについてContracts、参照先のタイプを表示したいと思いSupplierます。したがって、たとえば、関連するサプライヤが電力を供給している場合、それを のリストに表示したいと考えていますContracts。

ただし、これがどのように行われるかを見つけることができないようです。私はこの答えを見つけましたが、それを試みるとImproperlyConfiguredエラーが発生します。

これはどのように行うことができますか？

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2 に答える 2

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おそらく必要なのはlist_display 

class ContractAdmin(admin.ModelAdmin):
    list_display('clientNumber', 'supplier')

admin.register(Contract, ContractAdmin)

__外部キーの管理者を許可するには、このスニペットを使用できます

スニペットから：

from django.contrib import admin
from django.db import models

def getter_for_related_field(name, admin_order_field=None, short_description=None):
    """
        Create a function that can be attached to a ModelAdmin to use as a list_display field, e.g:
        client__name = getter_for_related_field('client__name', short_description='Client')
    """
    related_names = name.split('__')
    def getter(self, obj):
        for related_name in related_names:
            obj = getattr(obj, related_name)
        return obj
    getter.admin_order_field = admin_order_field or name
    getter.short_description = short_description or related_names[-1].title().replace('_',' ')
    return getter

class RelatedFieldAdminMetaclass(admin.ModelAdmin.__metaclass__):
    """
        Metaclass used by RelatedFieldAdmin to handle fetching of related field values.
        We have to do this as a metaclass because Django checks that list_display fields are supported by the class.
    """
    def __getattr__(self, name):
        if '__' in name:
            getter = getter_for_related_field(name)
            setattr(self, name, getter) # cache so we don't have to do this again
            return getter
        raise AttributeError # let missing attribute be handled normally

class RelatedFieldAdmin(admin.ModelAdmin):
    """
        Version of ModelAdmin that can use related fields in list_display, e.g.:
        list_display = ('address__city', 'address__country__country_code')
    """
    __metaclass__ = RelatedFieldAdminMetaclass
    def queryset(self, request):
        qs = super(RelatedFieldAdmin, self).queryset(request)

        # include all related fields in queryset
        select_related = [field.rsplit('__',1)[0] for field in self.list_display if '__' in field]

        # Include all foreign key fields in queryset.
        # This is based on ChangeList.get_query_set().
        # We have to duplicate it here because select_related() only works once.
        # Can't just use list_select_related because we might have multiple__depth__fields it won't follow.
        model = qs.model
        for field_name in self.list_display:
            try:
                field = model._meta.get_field(field_name)
            except models.FieldDoesNotExist:
                continue
            if isinstance(field.rel, models.ManyToOneRel):
                select_related.append(field_name)

        return qs.select_related(*select_related)





#### USAGE ####
class FooAdmin(RelatedFieldAdmin):
    # these fields will work automatically:
    list_display = ('address__phone','address__country__country_code','address__foo')

    # ... but you can also define them manually if you need to override short_description:
    address__foo = getter_for_related_field('address__foo', short_description='Custom Name')
于 2013-06-20T15:24:50.640 に答える