Django admin + autocomplete_light 用于具有大数据集的多对多字段

Question

Django 版本：1.7
autocomplete_light 版本：2.0

我有一个多对多关系：订阅 <-> 应用，其中每个应用可以属于多个订阅，并且每个订阅可以包含多个应用程序。预计订阅数量将达到数百，而应用数量约为 150 万。

使用 Django Admin 管理订阅及其应用程序会很棒，并且按照 Whosebug 上的建议使用 autocomplete_light 处理大型数据集。下面是我想出的代码，但是它试图一次加载 AppMetadata 的所有 150 万条记录并挂起浏览器。请指教。

# model.py
class AppMetadata(models.Model):
    package_key = models.IntegerField(primary_key=True)
    title = models.CharField(max_length=500)
    package = models.CharField(max_length=400)

class Subscription(models.Model):
    name = models.CharField(max_length=256, unique=True)
    is_active = models.BooleanField('active', default=True)

class SubscriptionApp(models.Model):
    subscription_key = models.ForeignKey(to=Subscription, on_delete=models.DO_NOTHING)
    package_key = models.ManyToManyField(to=AppMetadata, db_column='package_key')

# autocomplete_light_registry.py
class AppMetadataAutocomplete(autocomplete_light.AutocompleteModelBase):
    model = AppMetadata
    search_fields = ('title', 'package')
    choices = AppMetadata.objects.all()
    limit_choices = 20
autocomplete_light.register(AppMetadataAutocomplete)

class SubscriptionAppAutocomplete(autocomplete_light.AutocompleteGenericBase):
    model = SubscriptionApp
    choices = (
            Subscription.objects.all(),
            AppMetadata.objects.all(),
    )
    search_fields = (
            ('^name', ),
            ('title', 'package'),
    )
    limit_choices = 20
autocomplete_light.register(SubscriptionAppAutocomplete)

class SubscriptionAutocomplete(autocomplete_light.AutocompleteModelBase):
    model = Subscription
    choices = Subscription.objects.all()
    search_fields = ('name', )
    limit_choices = 20
autocomplete_light.register(SubscriptionAutocomplete)

# admin.py
class SubscriptionAppInline(admin.TabularInline):
    model = SubscriptionApp

class SubscriptionAdmin(admin.ModelAdmin):
    form = autocomplete_light.modelform_factory(model=Subscription)
    inlines = [SubscriptionAppInline]
admin.site.register(Subscription, SubscriptionAdmin)

# settings.py
INSTALLED_APPS = (
    'autocomplete_light',
    'django.contrib.admin',
    ...
...

# urls.py
urlpatterns = patterns(
    ...
    # last record
    url(r'^autocomplete/', include('autocomplete_light.urls')),
)

Answer 1

我想出了一个折衷方案。从上面的代码中，我删除了 SubscriptionAutocomplete 并重写了 admin.py 类如下：

@admin.register(SubscriptionApp)
class SubscriptionAppAdmin(admin.ModelAdmin):
    form = autocomplete_light.modelform_factory(model=SubscriptionApp)

class SubscriptionAppInline(admin.TabularInline):
    model = SubscriptionApp

@admin.register(Subscription)
class SubscriptionAdmin(admin.ModelAdmin):
    model = Subscription
    ordering = ('name',)

Django admin + autocomplete_light 用于具有大数据集的多对多字段

Django admin + autocomplete_light for many-to-many field with large data-set

python

django

django-autocomplete-light