Django,类别和子类别 [英] Django, category and subcategories
本文介绍了Django,类别和子类别的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
< ul>
< li>
< a href =#>类别< / a>
<! - subcategories - >
< span>子类别1< / span>
< span>子类别2< / span>
...
< / li>
....
....
< / ul>
我的问题:在数据模型中:使用'self',我不知道如何做。
class Category(models.Model):
name = models.CharField(core = True,maxlength = 200)
slug = models.SlugField(prepopulate_from =('name',))
parent = models.ForeignKey('self',blank = True,null = True,related_name ='child')
description = models.TextField(blank = True,help_text =Optional)
感谢
解决方案
使用类似
top_level_cats = Category.objects.filter(parent__isnull = True)
然后:
for tlc in top_level_cats:
#do顶级类别的HTML
在tlc.child.all()中的clc:
#do clc的子项的HTML
如果您有多个级别类别,则需要在某处进行递归调用,但这将提供基本要点。
im working category and subcategories with the DataModel, all is fine in this part, but i need to use my category and subcategories in my Menu Nav, im try to use this Jquery menu , and im rendering my menu with subcategories, but im lost with rendering the subcategories in the way:
<ul>
<li>
<a href="#">Category</a>
<!--subcategories-->
<span>Subcategory 1 </span>
<span>Subcategory 2 </span>
...
</li>
....
....
</ul>
My problem: in the datamodel: with the 'self', i dont know how ill do a for in this case for make the subcategories (parent is the field himself)..
class Category(models.Model):
name = models.CharField(core=True, maxlength=200)
slug = models.SlugField(prepopulate_from=('name',))
parent = models.ForeignKey('self', blank=True, null=True, related_name='child')
description = models.TextField(blank=True,help_text="Optional")
Thanks
解决方案
Get all top-level categories using something like
top_level_cats = Category.objects.filter(parent__isnull=True)
Then:
for tlc in top_level_cats:
#do the HTML for the top-level category
for clc in tlc.child.all():
#do the HTML for the children of clc
If you have multiple level categories, there'll need to be a recursive call in there somewhere, but this gives the basic gist.
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