我从文档中获取了几乎没有变化的指南,有我的 models.py
from django.db import models
class Country(models.Model):
name = models.CharField(max_length=255)
class City(models.Model):
name = models.CharField(max_length=255)
country = models.ForeignKey('Country', related_name="cities", on_delete=models.CASCADE)
class Address(models.Model):
country = models.ForeignKey('Country', on_delete=models.CASCADE)
city = models.ForeignKey('City', on_delete=models.CASCADE)
并创建了 ModelForm,因为文档指南中的简单表单不适合管理面板
class AddressForm(forms.ModelForm):
class Meta:
model = Address
fields = '__all__'
widgets = {
'country': ModelSelect2Widget(
model=Country,
search_fields=['name__icontains'],
),
'city': ModelSelect2Widget(
model=City,
search_fields=['name__icontains'],
dependent_fields={'country': 'country'},
max_results=500,
)
}
在简单的而不是管理员的页面上它工作正常。我只是为了测试而尝试过。我真的只需要在管理面板中。这是来自文档的模板
<!DOCTYPE html>
<html lang="en">
<head>
<title>Create Book</title>
{{ form.media.css }}
<style>
input, select {width: 100%}
</style>
</head>
<body>
<h1>Create a new Book</h1>
<form method="POST">
{% csrf_token %}
{{ form.as_p }}
<input type="submit">
</form>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
{{ form.media.js }}
</body>
</html>
并查看课程
class AddressCreateView(generic.CreateView):
model = models.Address
form_class = forms.AddressForm
success_url = "/"
template_name = 'address.html'
但是在管理面板中,相同的表单不起作用。Selects 不包含任何项目,也没有显示搜索字段,也没有发送到服务器的请求,我可以看到在简单页面上与 selects 交互时
from django.contrib import admin
from .models import City, Country, Address
from .forms import AddressForm
@admin.register(Address)
class AddressAdmin(admin.ModelAdmin):
class Media:
js = (
'https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.min.js',
)
form = AddressForm
admin.site.register(City)
admin.site.register(Country)