使用django-mptt创建树结构

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1、首先需要安装django-mptt

python manger.py Django-mptt

2、models.py如下：

from django.db import models

from mptt.models import MPTTModel

class Area(MPTTModel):

name = models.CharField( '模块名称' , max_length= 50 , unique= True)

parent_area = models.ForeignKey( 'self' , verbose_name= '父节点' , null= True, blank= True, related_name= 'children')

community = models.TextField( '内容' , null= True, blank= True)

class Meta:

verbose_name = '表名'

verbose_name_plural = verbose_name

class MPTTMeta:

parent_attr = 'parent_area'

def __str__( self):

return self.name

3、views.py如下：

def help(request):

nodes = models.Area.objects.all()

return render(request , 'help.html' , { 'nodes': nodes})

4、html页面代码如下：

<div class= "tree well" >

<ul>

<li class= "parent_li" style= " display: list-item" >

<span title= "折叠此级" >

<i class= "glyphicon glyphicon-folder-open glyphicon-minus-sign" ></i>

商贸版

</span>

<ul>

{% recursetree nodes %}

{% if node. is_leaf_node %}

<li class= "parent_li" style= " display: none" >

<span title= "折叠此级" >

<i class= "glyphicon glyphicon-minus-sign" ></i>

{{ node. name }}

</span>

</li>

{% else %}

<li class= "parent_li" style= " display: none" >

<span title= "折叠此级" >

<i class= "glyphicon glyphicon-minus-sign" ></i>

{{ node. name }}

</span>

<ul>

{{ children }}

</ul>

</li>

{% endif %}

{% endrecursetree %}

</ul>

</ul>

</div>

5、相关js代码

<script type= "text/javascript" >

$( function(){

$( '. tree li :has(ul)'). addClass( 'parent_li'). find( ' > span '). attr( 'title' , '折叠此级') ;

$( '. tree li . parent_li [ ltype =month] > span , . tree li . parent_li [ ltype =year]:gt(0) > span '). each( function (e){

var children = $( this).parent( ' li . parent_li '). find( ' > ul > li ') ;

children. hide( 'fast') ;

$( this). attr( 'title' , '展开此级'). find( ' > i '). addClass( 'glyphicon-plus-sign'). removeClass( 'glyphicon-minus-sign') ;

}) ;

$( '. tree li . parent_li > span '). on( 'click' , function (e) {

var children = $( this).parent( ' li . parent_li '). find( ' > ul > li ') ;

if (children. is( ":visible")) {

children. hide( 'fast') ;

$( this). attr( 'title' , '展开此级'). find( ' > i '). addClass( 'glyphicon-plus-sign'). removeClass( 'glyphicon-minus-sign') ;

} else {

children. show( 'fast') ;

$( this). attr( 'title' , '折叠此级'). find( ' > i '). addClass( 'glyphicon-minus-sign'). removeClass( 'glyphicon-plus-sign') ;

}

e. stopPropagation() ;

}) ;

}) ;

</script>

效果图