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我正在尝试制作一个链式选择菜单，我有这个模型：

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

这是我的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
    )

我的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),
    url(r'^hello/$',  health_form),
)

我的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})

我是 Django 新手，我觉得这很棘手。用户必须选择一个专业，然后应该出现涵盖该专业的 health_plans。

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

到目前为止，我在菜单中得到的唯一内容是：Health_plan object Health_plan object Health_plan object

我希望我说清楚了，因为我的代码不是。

任何帮助表示感谢

4

1 回答 1

2

这与链式选择无关，这里的大部分代码都是无关紧要的。问题是，虽然Doctors_list有__unicode__方法，Health_plan但没有。也为该模型定义一个。

（另请注意，模型名称的通常样式是 CapWords:DoctorsList和HealthPlan。虽然前者实际上只指一个医生，所以它应该只是Doctor。）

于 2013-05-08T20:43:00.163 回答