菜单权限作为父权限

Posted 2021-03-04 xuqidong

 1 from django.db import models
 2 
 3 # Create your models here.
 4 class User(models.Model):
 5     name=models.CharField(max_length=11)
 6     pwd=models.CharField(max_length=11)
 7     roles=models.ManyToManyField(‘Role‘)
 8     def __str__(self):
 9         return self.name
10 
11 class Role(models.Model):
12     title=models.CharField(max_length=11)
13     permissions=models.ManyToManyField(‘Permission‘)
14     def __str__(self):
15         return self.title
16 
17 class Menu(models.Model):
18     title=models.CharField(max_length=32,verbose_name="菜单")
19     icon=models.CharField(max_length=32,verbose_name="图标",null=True,blank=True)
20 
21 class Permission(models.Model):
22     title=models.CharField(max_length=32)
23     url=models.CharField(max_length=32)
24     menu=models.ForeignKey(‘Menu‘,on_delete=models.CASCADE,null=True)
25     name=models.CharField("url别名",max_length=32,default="")
26     pid=models.ForeignKey(‘self‘,on_delete=models.CASCADE,null=True,verbose_name="父权限")
27 
28     def __str__(self):
29         return self.title

models.py

 1 from app01.models import Role
 2 
 3 def initial_session(user,request):
 4     permissions = Role.objects.filter(user=user).values(‘permissions__url‘,
 5                                                         ‘permissions__title‘,
 6                                                         ‘permissions__name‘,
 7                                                         ‘permissions__pk‘,
 8                                                         ‘permissions__pid‘,
 9                                                         ‘permissions__menu__title‘,
10                                                         ‘permissions__menu__icon‘,
11                                                         ‘permissions__menu__pk‘,
12                                                         ).distinct()
13     permission_list = []
14     permission_names = []
15     permission_menu_dict = {}
16     for item in permissions:
17         permission_list.append({
18             "url":item["permissions__url"],
19             "id":item["permissions__pk"],
20             "pid":item["permissions__pid"],
21             "title":item["permissions__title"],
22         })
23         permission_names.append(item[‘permissions__name‘])
24         menu_pk = item[‘permissions__menu__pk‘]
25         if menu_pk:
26             if menu_pk not in permission_menu_dict:
27                 permission_menu_dict[menu_pk] = {
28                     "menu_title": item[‘permissions__menu__title‘],
29                     "menu_icon": item[‘permissions__menu__icon‘],
30                     "children": [
31                         {
32                             "title": item[‘permissions__title‘],
33                             "url": item[‘permissions__url‘],
34                             "pk": item[‘permissions__pk‘],
35                         }
36                     ],
37                 }
38             else:
39                 permission_menu_dict[menu_pk]["children"].append({
40                     "title": item[‘permissions__title‘],
41                     "url": item[‘permissions__url‘],
42                 })
43     print(permission_menu_dict)
44     request.session[‘permission_list‘] = permission_list
45     request.session[‘permission_names‘] = permission_names
46     request.session[‘permission_menu_dict‘] = permission_menu_dict

service/rbac.py

 1 import re
 2 
 3 from django.template import Library
 4 
 5 register=Library()
 6 @register.inclusion_tag("rbac/menu.html")
 7 def get_menu_style(request):
 8     permission_menu_dict = request.session.get(‘permission_menu_dict‘)
 9     for val in permission_menu_dict.values():
10         for item in val["children"]:
11             val["class"] = "active"
12             if request.show_id==item["pk"]:
13                 val["class"] = ""
14     return {‘permission_menu_dict‘:permission_menu_dict}
15 
16 @register.filter
17 def has_permission(btn_url, request):
18     permission_names=request.session.get("permission_names")
19     return btn_url in permission_names

templatetags/rbac.py

 1 import re
 2 
 3 from django.utils.deprecation import MiddlewareMixin
 4 from django.shortcuts import HttpResponse,redirect
 5 
 6 class PermissionMiddleWare(MiddlewareMixin):
 7     def process_request(self,request):
 8         current_path = request.path
 9         for reg in [‘/login/‘,‘/admin/‘]:
10             ret=re.search(reg,current_path)
11             if ret:
12                 return None
13         user_id=request.session.get(‘user_id‘)
14         if not user_id:
15             return redirect(‘/login/‘)
16 
17 
18         permission_list=request.session.get(‘permission_list‘)
19         for item in permission_list:
20             reg=‘^%s$‘%item["url"]
21             ret=re.search(reg,current_path)
22             if ret:
23                 show_id=item["pid"] or item["id"]
24                 request.show_id = show_id
25                 return None
26         return HttpResponse(‘无权限访问‘)

middleware.py