相关疑难解决方法(0)

如何在ModelChoiceField中设置optgroup标签？

这是一个例子:

models.py

class Link(models.Model):
    config = models.ForeignKey(Config)
    name = models.URLField(u'Name', null=True, max_length=50)
    gateway = models.IPAddressField(u'Gateway', null=True)
    weight = models.IntegerField(u'Weight', null=True)
    description = models.TextField(u'Description', blank=True)

def __unicode__(self):
    return self.name

forms.py

class LinkForm(ModelForm):
    config = ModelChoiceField(queryset=Config.objects.all(), empty_label="Choose a link",widget=GroupedSelect())

class Meta:
    model = Link

我想像我这样渲染我的ChoiceField:

example.html的

<select id="id_config" name="config">
    <option selected="selected" value="">Choose a link</option>
    <optgroup label="Configuration" >
        <option value="8">Address: 192.168.1.202/255.255.255.0 </option>
        <option value="9">Address: 192.168.1.240/255.255.255.0 </option>
        <option value="10">Address: 192.168.3.1/255.255.255.0 </option>
    </optgroup>
</select>

**更新**

我这样解决了我的问题:

class GroupedSelect(Select):
    def render(self, name, …

我正在构建一个简单的问答网站Django 1.8。
我想根据前键创建选择 optgroup（详细信息如下）。

我怎样才能做到这一点？

大学

class College(models.Model):
    title = models.CharField(max_length=255)
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)
    slug = models.SlugField(blank=True, max_length=100)
    university = models.ForeignKey(to=University, related_name='college_list')

大学

class University(models.Model):
    title = models.CharField(max_length=255)
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)
    slug = models.SlugField(unique=True, blank=True, max_length=100)

题

class Question(models.Model):
    title = models.CharField(max_length=150)
    body = RedactorField(verbose_name=u'Vsebina')
    slug = models.SlugField(unique=True, blank=True, max_length=100)
    college = models.ForeignKey(to=College, default=1, related_name='questions')

问题表

class CreateQuestionForm(ModelForm):
    class Meta:
        model = Question
        fields = ['title', 'body', 'college']

模板（显示选择）

{{ form.college }} …