Question

我正在使用django-smart-select。我想要一个我的位置模型的表单，它允许根据国家将出现的大陆进行选择。提供用户地址后，需要提交表单。这就是我所做的。

 # myapp/models.py
 from django.db import models
 from smart_selects.db_fields import ChainedForeignKey


class Continent(models.Model):
name = models.CharField(max_length=20)

def __str__(self):
    return self.name

class Country(models.Model):
name = models.CharField(max_length=20)
continent = models.ForeignKey(Continent)

def __str__(self):
    return self.name


class Location(models.Model):
newcontinent = models.ForeignKey(Continent)
newcountry = ChainedForeignKey(
    Country, # the model where you're populating your countries from
    chained_field="newcontinent", # the field on your own model that this field links to
    chained_model_field="continent", # the field on Country that corresponds to newcontinent
   # show_all=False, # only shows the countries that correspond to the selected continent in newcontinent
)

my_address = models.CharField(max_length=20)


#myapp/forms.py
from myapp.models import Location
from django.forms import ModelForm

class LocationForm(ModelForm):
class Meta:
    model = Location
    fields = ['newcontinent', 'newcountry', 'my_address']


#myapp/templates/myapp/addLocationForm.html   
{% extends 'registration/base.html' %}

{% block title %}Add a new location{% endblock %}

{% block content %}
<form method="post">
{% csrf_token %}
{{ form.as_p }}
 <button type="submit"> Post </button>
  </form>
{% endblock %}

#myapp/views.py
def addlocation(request):
if request.POST == "POST":
    form = LocationForm()
    if form.is_valid():
       form.save()
       return redirect('home')
else:
    form = LocationForm()
    return render(request, 'myapp/addLocationForm.html', { 'form': form})


#urls.py
 url(r'^location/add/$', core_views.addlocation,name='add-location'),

上述代码不起作用。我可以选择由管理员添加的大陆。但是，没有选择国家的选项。

我也尝试使用没有帮助的通用CreatView，并且出现了相同的结果。

Answer 1

您的代码看起来很好。检查您的管理页面。如果智能选择在管理页面中有效，那么在您的html文件中包含以下内容：顺序很重要。

        <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js</script>
        <script src="{% static 'smart-selects/admin/js/chainedfk.js' %}"></script>
        <script src="{% static 'smart-selects/admin/js/chainedm2m.js' %}"></script>

我使用django-smart-choices的方式有什么问题吗？为什么我无法制作ModelForm？

1 个答案: