Django django-smart-select: get TemplateSyntaxError beim Hinzufügen von Daten in der Admin-Site

Question

Ich bin ein Django-Neuling. Ich möchte diese App ausprobieren django-smart-selects. Ich möchte, dass die Adresse "Kunde" automatisch ausgefüllt wird, indem Sie im Formular "Bestellung" der Admin-Site den entsprechenden "Kunden" auswählen.

So habe ich definiert folgendes

models.py

from smart_selects.db_fields import ChainedForeignKey 
from django.db import models 

# Adress model 
class Adresse (models.Model): 
    strasse = models.CharField(max_length=50) 
    plz = models.IntegerField(max_length=5) 
    ort = models.CharField(max_length=50) 

    def __unicode__(self): 
     return self.strasse 

# Customer model 
class Customer (models.Model): 
    name = models.CharField(max_length=50) 
    adresse = models.ForeignKey(Adresse) 

    def __unicode__(self): 
     return self.name 

# Order model 
class Order (models.Model): 
    name = models.CharField(max_length=50) 
    delivery_time = models.DateTimeField() 
    created_at = models.DateTimeField(auto_now_add=True) 
    kunde = models.ForeignKey(Customer, related_name="Kunde") 
    adresse = ChainedForeignKey(
         Customer, 
         chained_field="kunde", 
         chained_model_field="strasse", 
         show_all=False, 
         auto_choose=True 
        ) 

    class Meta: 
     db_table = 'order' 
     ordering = ['-created_at'] 

    def __unicode__(self): 
     return self.name 

admin.py

from django.contrib import admin 
from customer_order.test_app.models import Adresse, Customer, Order 

class AdresseAdmin(admin.ModelAdmin): 
    list_display = ('strasse', 'plz', 'ort',) 

class CustomerAdmin(admin.ModelAdmin): 
    list_display = ('name', 'adresse',) 
    list_per_page = 50 

class OrdersAdmin(admin.ModelAdmin): 
    list_display = ('name', 'delivery_time', 'created_at', 'kunde', 'adresse',) 
    list_display_links = ('name',) 
    list_per_page = 50 
    ordering = ['-created_at'] 

admin.site.register(Adresse, AdresseAdmin) 
admin.site.register(Customer, CustomerAdmin)  
admin.site.register(Order, OrdersAdmin) 

Nun, wenn ich die ersten Einträge in der hinzufügen möchten "Bestellung" Tabelle über den Admin-Add-Button, habe ich folgende e rror:

Request Method: GET 
Request URL: http://127.0.0.1:8000/admin/test_app/order/add/ 
Exception Type: TemplateSyntaxError 
Exception Value: 

Caught an exception while rendering: Reverse for 'chained_filter' with arguments '()' and keyword arguments '{'field': 'strasse', 'app': 'test_app', 'model': 'Customer', 'value': '1'}' not found. 

Original Traceback (most recent call last): 
    File "C:\Python25\lib\site-packages\django\template\debug.py", line 71, in render_node 
    result = node.render(context) 
    File "C:\Python25\lib\site-packages\django\template\debug.py", line 87, in render 
    output = force_unicode(self.filter_expression.resolve(context)) 
    File "C:\Python25\lib\site-packages\django\utils\encoding.py", line 71, in force_unicode 
    s = unicode(s) 
    File "C:\Python25\lib\site-packages\django\forms\forms.py", line 356, in __unicode__ 
    return self.as_widget() 
    File "C:\Python25\lib\site-packages\django\forms\forms.py", line 391, in as_widget 
    return widget.render(name, data, attrs=attrs) 
    File "C:\Python25\lib\site-packages\django\contrib\admin\widgets.py", line 231, in render 
    output = [self.widget.render(name, value, *args, **kwargs)] 
    File "H:\customer_order\smart_selects\widgets.py", line 36, in render 
    url = "/".join(reverse("chained_filter", kwargs={'app':self.app_name,'model':self.model_name,'field':self.model_field,'value':"1"}).split("/")[:-2]) 
    File "C:\Python25\lib\site-packages\django\core\urlresolvers.py", line 350, in reverse 
    *args, **kwargs))) 
    File "C:\Python25\lib\site-packages\django\core\urlresolvers.py", line 300, in reverse 
    "arguments '%s' not found." % (lookup_view_s, args, kwargs)) 
NoReverseMatch: Reverse for 'chained_filter' with arguments '()' and keyword arguments '{'field': 'strasse', 'app': 'test_app', 'model': 'Customer', 'value': '1'}' not found. 

Exception Location: C:\Python25\lib\site-packages\django\template\debug.py in render_node, line 81 
Python Executable: C:\Python25\python.exe 
Python Version: 2.5.0 

Answer 1

Sie Schritt 2 von den Installationsanweisungen getan haben - die folgenden in Ihrem urls.py hinzufügen?

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