Question

如何在django中生成多级列表？我正在尝试编写一个简单的代码，用于显示带子类别的类别，以及用于子论坛的论坛。

它应该是这样的：

Category-1
 - Subcategory-1
 - Subcategory-2
 - Subcategory-3

这是我的代码：

CATEGORY_CHOICES = (
                    ('hw', "Hardware"),
                    ('soft', "Software"),
                    ('snd', 'Audio'),
                    )
category = models.CharField(max_length=32, choices=CATEGORY_CHOICES)
subcategory = models.CharField(unique=True, max_length=32, blank=True)

{%for c in category %}

   {{ c.get_category_display|title }}
   {{ c.subcategory }}
   <br>
{%endfor%}

Answer 1

您可以使用optgroups

在您的django表单中，您可以这样设置它们。

def categories_as_optgroups(categories, subcategories):
   """
   Create optgroups for sorting activities into programs
   """
   subcategory = []
   for category in categories:
       subcategories_list = []
       for subcategory in subcategories.objects.filter(category_fk=category).order_by('name'):
          subcategories_list.append([subcategory.id, subcategory.name])

       categories_list = [category.name, subcategories_list]
       subcategory.append(categories_list)

   return activities

class ActivityForm(ModelForm):
    program = forms.ModelChoiceField(queryset=Program.objects.all().order_by('name'))
    class Meta:
       model = BookingActivity
    def __init__(self, *args, **kwargs):
       super(ActivityForm, self).__init__(*args, **kwargs)
       self.fields['activity'].choices = categories_as_optgroups(Programs, Activities)

我用它将activities分类为programs作为子组。效果很好。

Django - 多级列表

1 个答案: