Django的ChainedForeignKey智能菜单

我试图做一个链接的选择菜单，我有这个模型：Django的ChainedForeignKey智能菜单

from django.db import models 

class Health_plan(models.Model): 
    name = models.CharField(max_length=15) 

class Doctors_list(models.Model): 
    name = models.CharField(max_length=30) 
    specialty = models.CharField(max_length=15) 
    health_plans = models.ManyToManyField(Health_plan, related_name="doctors") 
    location = models.CharField(max_length=15) 

    def __unicode__(self): 
     return self.name

这是我forms.py：

class SpecForm(ModelForm): 
    a = Doctors_list.objects.values_list('specialty', flat=True) 
    unique = [('---------------','---------------')] + [(i,i) for i in set(a)] 
    specialty = forms.ChoiceField(choices=unique) 
    class Meta: 
     model = Doctors_list 

class HealthForm(ModelForm): 
    hplan = ChainedForeignKey(
     Health_plan, 
     chained_field="specialty", 
     chained_model_field="specialty", 
     show_all=False, 
     auto_choose=True 
    )

我urls.py：

from django.conf.urls import patterns, include, url 
from testApp.views import spec_form 
from testApp.views import health_form 
from django.contrib import admin 
admin.autodiscover() 

urlpatterns = patterns('', 
    # Examples: 
    url(r'^$', 'Medbook.views.home', name='home'), 
    # url(r'^Medbook/', include('Medbook.foo.urls')), 
    url(r'^admin/doc/', include('django.contrib.admindocs.urls')), 
    url(r'^admin/', include(admin.site.urls)), 
    url(r'^hello/$', spec_form, health_form), 
)

and my views.py：

from django.shortcuts import render_to_response 
from testApp.forms import SpecForm 
from testApp.forms import HealthForm 

def spec_form (request): 
    if request.method == 'POST': 
     form = SpecForm(request.POST) 
     if form.is_valid(): 
      form.save() 
    else: 
     form = SpecForm() 
    return render_to_response('hello.html', {'form':form}) 

def health_form (request): 
    if request.method == 'POST': 
     form = HealthForm(request.POST) 
     if form.is_valid(): 
      form.save() 
    else: 
     form = SpecForm() 
    return render_to_response('hello.html', {'form':form})

现在我得到的错误是'function' object is not iterable当我访问的网页。我是Django的新手，我觉得这很棘手。用户必须选择一个专业，然后出现涵盖该专业的health_plans。

health_plans与医生有许多关系。当一个人选择一个专业时，脚本应该检查哪个医生属于该专业，并检索这些医生持有的所有健康计划。

我希望我明确表示，因为我的代码不是。

任何帮助，恳请赞赏

编辑：堆栈跟踪

Internal Server Error: /hello/ Traceback (most recent call last): File "C:\Python27\lib\site-packages\django\core\handlers\base.py", line 103, in get_response resolver_match = resolver.resolve(request.path_info) File "C:\Python27\lib\site-packages\django\core\urlresolvers.py", line 321, in resolve sub_match = pattern.resolve(new_path) File "C:\Python27\lib\site-packages\django\core\urlresolvers.py", line 221, in resolve kwargs.update(self.default_args) TypeError: 'function' object is not iterable [08/May/2013 19:30:45] "GET /hello/ HTTP/1.1" 500 62490

来源

2013-05-08 ClaudioA

堆栈跟踪？ :) – karthikr 2013-05-08 18:58:34

更新见上面 – ClaudioA 2013-05-08 19:03:52

你能显示urls.py吗？ – karthikr 2013-05-08 19:08:58

变化：

url(r'^hello/$', spec_form, health_form)到url(r'^hello/$', spec_form)

另外，在车型：

class Health_plan(models.Model): 
    name = models.CharField(max_length=15) 
    def __unicode__(self): 
     return "%s"%(self.name)

来源

2013-05-08 19:37:29 karthikr

Django的ChainedForeignKey智能菜单

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