二级菜单

from django.db import models

# Create your models here.
class User(models.Model):
    name=models.CharField(max_length=11)
    pwd=models.CharField(max_length=11)
    roles=models.ManyToManyField('Role')
    def __str__(self):
        return self.name

class Role(models.Model):
    title=models.CharField(max_length=11)
    permissions=models.ManyToManyField('Permission')
    def __str__(self):
        return self.title

class Menu(models.Model):
    title=models.CharField(max_length=32,verbose_name="菜单")
    icon=models.CharField(max_length=32,verbose_name="图标",null=True,blank=True)

class Permission(models.Model):
    title=models.CharField(max_length=32)
    url=models.CharField(max_length=32)
    menu=models.ForeignKey('Menu',on_delete=models.CASCADE,null=True)
    # icon=models.CharField(max_length=32,default="")
    def __str__(self):
        return self.title

from app01.models import Role

def initial_session(user,request):
    permissions = Role.objects.filter(user=user).values('permissions__url',
                                                        'permissions__title',
                                                        'permissions__menu__title',
                                                        'permissions__menu__icon',
                                                        'permissions__menu__pk',
                                                        ).distinct()
    permission_list = []
    permission_menu_dict = {}
    for item in permissions:
        permission_list.append(item['permissions__url'])
        menu_pk = item['permissions__menu__pk']
        if menu_pk:
            if menu_pk not in permission_menu_dict:
                permission_menu_dict[menu_pk] = {
                    "menu_title": item['permissions__menu__title'],
                    "menu_icon": item['permissions__menu__icon'],
                    "children": [
                        {
                            "title": item['permissions__title'],
                            "url": item['permissions__url'],
                        }
                    ],
                }
            else:
                permission_menu_dict[menu_pk]["children"].append({
                    "title": item['permissions__title'],
                    "url": item['permissions__url'],
                })
    print(permission_menu_dict)
    request.session['permission_list'] = permission_list
    request.session['permission_menu_dict'] = permission_menu_dict

import re

from django.template import Library

register=Library()
@register.inclusion_tag("rbac/menu.html")
def get_menu_style(request):
    permission_menu_dict = request.session.get('permission_menu_dict')
    for val in permission_menu_dict.values():
        for item in val["children"]:
            val["class"] = "active"
            ret = re.search("^{}$".format(item['url']), request.path)
            if ret:
                val["class"] = ""
    return {'permission_menu_dict':permission_menu_dict}

<div class="multi-menu">
    {% for foo in permission_menu_dict.values %}
        <div class="item">
        <div class="title"><i class="{{ foo.menu_icon }}"></i>{{ foo.menu_title }}</div>
        <div class="body {{ foo.class }}">
            {% for item in foo.children %}
                <a href="{{ item.url }}">{{ item.title }}</a>
            {% endfor %}

        </div>
        </div>
    {% endfor %}
</div>

from django.contrib import admin
from app01 import models
# Register your models here.
admin.site.register(models.User)

class RoleConfig(admin.ModelAdmin):
    list_display = ['title']

admin.site.register(models.Role,RoleConfig)

class PermissionConfig(admin.ModelAdmin):
    list_display = ['pk','title','url','menu']
    # list_editable = ['title','is_menu']
    search_fields = ['title']
    ordering = ['pk']

admin.site.register(models.Permission,PermissionConfig)