我使用 django-select2 来显示父类别和子类别。当我使用“Select2MultipleWidget”(例如太平洋时区)搜索父类别的名称时,它不会显示其子类别。搜索父类别时是否可以显示所属子类别?
我正在阅读 select2 文档,但找不到相关选项。
#models.py
class Category(models.Model):
name = models.CharField(max_length=200)
class SubCategory(models.Model):
category = models.ForeignKey(Category, on_delete=models.CASCADE)
name = models.CharField(max_length=180)
class Post(models.Model):
user = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE, related_name="user")
title = models.CharField(max_length=200)
category = models.ManyToManyField(SubCategory)
desc = models.TextField()
#forms.py
class PostForm(forms.ModelForm):
def categories_as_choices():
categories = []
for category in Category.objects.all():
new_category = []
sub_categories = []
for sub_category in category.subcategory_set.all():
sub_categories.append([sub_category.id, sub_category.name])
new_category = [category.name, sub_categories]
categories.append(new_category)
return categories
category = forms.ChoiceField(
choices=categories_as_choices(),
widget = Select2MultipleWidget(
attrs={'class': 'form-control col-4'}
),
)
class Meta:
model = Post
fields = ['title', 'desc', 'category']
我尝试使用 select2 的时区和州名示例(太平洋时区作为父类别,加利福尼亚作为子类别)。当我输入“太平洋时区”时,它不会显示“加利福尼亚”,子类别。