jquery - django 智能选择应用程序

Question

我在使 Django“智能选择”应用程序正常运行时遇到了问题。它不会填充我的链接字段的选择。 github“https://github.com/digi604/django-smart-selects”上的“readme”文件提供了以下说明。

• 链接字段是同一模型上的字段，该字段也应链接。
• 链接模型字段是链接模型的字段，该链接模型也对应于链接字段所链接的模型。

我觉得说明有点含糊，它们没有显示大陆和县表的模型，以使其更容易。

我之前发布了一个关于此的问题，但我没有得到回复。它有更多关于我的特定型号的信息。 “http://stackoverflow.com/questions/9155350/django-smart-selects-second-level-wont-populate”

希望有一些“django-smart-selects”专家可以帮助我渡过难关。谢谢

from smart_selects.db_fields import ChainedForeignKey 

class Location(models.Model)
    continent = models.ForeignKey(Continent)
    country = ChainedForeignKey(
        Country, 
        chained_field="continent",
        chained_model_field="continent", 
        show_all=False, 
        auto_choose=True
    )
    area = ChainedForeignKey(Area, chained_field="country", chained_model_field="country")
    city = models.CharField(max_length=50)
    street = models.CharField(max_length=100)

Answer 1

你应该在 urls.py 中插入:

url(r'^chaining/', include('smart_selects.urls')),

这是我所做和工作的:

#=================================
#models.py

from smart_selects.db_fields import ChainedForeignKey 

class Continent(models.Model):
    continent = models.CharField(max_length = 45)    
    def __unicode__(self):
        return unicode(self.continent)

class Country(models.Model):
    continent = models.ForeignKey(Continent)
    country = models.CharField(max_length = 45)
    def __unicode__(self):
        return unicode(self.country)

class Area(models.Model):
    country = models.ForeignKey(Country)
    area = models.CharField(max_length = 45)
    def __unicode__(self):
        return unicode(self.area)

class Location(models.Model):
    continent = models.ForeignKey(Continent)
    country = ChainedForeignKey
    (
        Country, 
        chained_field = "continent", 
        chained_model_field = "continent", 
        show_all = False, auto_choose = True
    )
    area = ChainedForeignKey(Area, chained_field = "country", chained_model_field = "country")
    city = models.CharField(max_length = 50)
    street = models.CharField(max_length = 100)

#=================================
#admin.py


from yourapp.models import Continent
from yourapp.models import Country
from yourapp.models import Area
from yourapp.models import Location


class ContinentAdmin(admin.ModelAdmin):
    pass

class CountryAdmin(admin.ModelAdmin):
    pass

class AreaAdmin(admin.ModelAdmin):
    pass

class LocationAdmin(admin.ModelAdmin):
    pass

admin.site.register(Continent, ContinentAdmin)
admin.site.register(Country, CountryAdmin)
admin.site.register(Area, AreaAdmin)
admin.site.register(Location, LocationAdmin)