Question

im使用 Django 2.0， Django_select2 6.0.3和 Select2 4.0.6在我的项目中创建两个依赖列表。我遵循this documentation设置代码。我们没有收到任何错误，但数据未显示在自动完成字段中。我试图将列表“ Provincias”与列表“ Regiones”链接在一起，因此当您从区域中选择一个选项时，将显示该区域中的所有省。这是我的代码。

Models.py

class region(models.Model):
    region = models.CharField(max_length=200)

class provincia(models.Model):    
    region = models.ForeignKey(region, related_name="provincias",on_delete=models.CASCADE)     
    provincia = models.CharField(max_length=200)

Forms.py

class Direccion(forms.ModelForm): 
region = forms.ModelChoiceField(
    queryset=region.objects.all(),
    label="Region",
    widget=ModelSelect2Widget(         
        model=region,
        search_fields=['region'],
        dependent_fields={'provincia': 'provincias'},        
    )
)   
provincia = forms.ModelChoiceField(
    queryset=provincia.objects.all(),
    label="Provincia",
    widget=ModelSelect2Widget(
        model=provincia,
        search_fields=['region__icontains'],
        dependent_fields={'region': 'region'},
        max_results=500,
    )
)
comuna = forms.CharField(required=True, label='Comuna')
calle = forms.CharField(required=True, label='Calle')
numero = forms.CharField(required=True, label='Número')
departamento = forms.IntegerField(label='Departamento')   
class Meta:
    model = direcciones
    fields = ('region', 'provincia', 'comuna', 'calle', 'numero', 'departamento')

views.py

def nuevadir(request):
if request.method == 'POST':
    dire = Direccion(request.POST)
    if dire.is_valid(): 
        dire2 = dire.save(commit=False)
        dire2.user = request.user
        dire2.region = dire.cleaned_data['region']             
        dire2.provincia = dire.cleaned_data['provincia']
        dire2.comuna = dire.cleaned_data['comuna']             
        dire2.numero = dire.cleaned_data['numero']
        dire2.calle = dire.cleaned_data['calle']
        dire2.departamento = dire.cleaned_data['departamento']
        dire2.save()
        return render(request, 'perfil-direccion.html')

else:

    dir = Direccion()
return render(request, 'perfil-nuevadir.html', {'dir': dir})

HTML

{% load widget_tweaks %}
<form method="post" action="{% url 'nuevadir' %}">
                      {% csrf_token %}                              
                      {% if dir.errors %}
                      {{ errors }}
                      {% endif %}
                      <div class="form -row">
                        <div class="col-md-6">
                            <div class="form-row">                          
                              {% for item in dir.visible_fields %} 
                                <div class="col-md-12 mb-3"> 
                                <label class="control-label" for="{{item.id_for_label}}">{{item.label}}</label>
                                {% render_field item class="form-control" %}                      

                                </div>
                              {% endfor %} 
                              </div>  
                        </div>
                    </div>
                    <hr>
                    <div class="form-actions">
                        <button type="submit" class="btn btn-primary ml-auto">Agregar Dirección</button>
                      </div>
                 </form>

我不知道从数据库获取数据是否有问题（我们有两个表。一个具有列ID和列的Regiones，另一个是具有列ID，Provincias和region_id的Provicionas），也许不是在HTML中正确呈现。

感谢您的帮助，我们对此深感困惑

Django select2依赖下拉列表问题

0 个答案: