django crm 左侧二级菜单栏

1.如何生成二级菜单栏

　　在 rbca表中生成一张表 menu ， 表示可能需要给客户展示的一级菜单栏

　　在permission表中 ，创建字段，通过多对一外键关系，关联到menu表，表示哪些permission要在二级菜单栏显示，显示到哪个一级菜单栏下面

　　在initial_session 权限注入的时候，注入一个字典 permission_menu_dict  > 格式如下：

    '''目标数据结构
        {
            1:{  # 1--menu_id
                'title':'..',
                'icon':'xx',
                children:[
                    {'title':'二级','url':'xx'},
                    {'title':'二级','url':'xx'},
                ]
            },
            2:{  # 2--menu_id
                'title':'..',
                'icon':'xx',
                children:[
                    {'title':'二级','url':'xx'},
                    {'title':'二级','url':'xx'},
                ]
            }
            
        }
        
    '''

　　在自定义标签中循环该字典生成标签

from django import template
from django.urls import reverse
register = template.Library()

from django.conf import settings
import re

@register.inclusion_tag('rbac/menu.html')
def menu(request):
    # menu_list = request.session.get('permisson_menu_list')
    menu_dict= request.session.get('permisson_menu_dict')
    for key,item in menu_dict.items():
        item['class'] = 'hide'

        for child in item['children']:
            # /customer/add/
            # 'url': '/customer/list/'
            # 'url': '/payment/list/'
            # # if re.match('^{}$'.format(child['url']), request.path):
            if request.show_id == child['pk']:
                # null == child['pk'] 1

                item['class'] = ''
                child['class'] = 'active'
                break


    return {"menu_dict": menu_dict}



@register.filter
def haspermission(base_url,request):


    for item in request.session['permisson_list']:
        #item = {'url','','title':'','name':''}
        reg = '^%s$' % item['url']  #/customer/edit/(d+)/ --- "/customer/edit/
        # /"
        ret = re.search(reg, base_url)
        # if item['name'] == base_url:
        if ret:
            return True

    return False

from django.db import models

class Menu(models.Model):

    title = models.CharField(max_length=32, verbose_name='一级菜单', null=True, blank=True)
    icon = models.CharField(max_length=32, verbose_name='一级菜单图标', null=True, blank=True)



class Permission(models.Model):
    """
    权限表
    """
    title = models.CharField(max_length=32, verbose_name='标题')
    url = models.CharField(max_length=32, verbose_name='权限')

    # is_menu = models.BooleanField(default=False, verbose_name='是否是菜单')
    menu = models.ForeignKey('Menu',null=True)

    pid = models.ForeignKey('self',null=True)

    class Meta:
        verbose_name_plural = '权限表'
        verbose_name = '权限表'
    
    def __str__(self):
        return self.title


class Role(models.Model):
    name = models.CharField(max_length=32, verbose_name='角色名称')
    permissions = models.ManyToManyField(to='Permission', verbose_name='角色所拥有的权限', blank=True)
    
    def __str__(self):
        return self.name


class User(models.Model):
    """
    用户表
    """
    name = models.CharField(max_length=32, verbose_name='用户名')
    password = models.CharField(max_length=32, verbose_name='密码')
    roles = models.ManyToManyField(to='Role', verbose_name='用户所拥有的角色', blank=True)
    
    def __str__(self):
        return self.name

from rbac import models

def initial_session(request,user_obj):
    permission_obj = models.Permission.objects.filter(role__user=user_obj).values('title','url','pk','menu_id','menu__title','menu__icon').distinct()
    # print(permission_obj)

    permission_list = []
    permission_menu_dict = {}
    for item in permission_obj:

        permission_list.append(item['url'])
        if item['menu_id']:
            if item['menu_id'] not in permission_menu_dict:
                permission_menu_dict[item['menu_id']] = {'title':item['menu__title'],'icon':item['menu__icon'],'children':[{'title':item['title'],'url':item['url']}]}
            else:
                permission_menu_dict[item.menu_id]['children'].append({'title':item['title'],'url':item['url']})



    # permission_list = [i.url for i in permission_obj]
    request.session['permission_list'] = permission_list
    request.session['permission_menu_dict'] = permission_menu_dict
    print(permission_menu_dict)



    '''
    1. 循环生成2级菜单
        生成一个字典
          permission_menu_dict  =  { 
            1:{}
          }
    
    
    
    
    '''

<div class="static-menu">

{#    {% for item in menu_list %}#}
{#        {% if item.active %}#}
{#            <a href="{{ item.url }}" class="{{ item.class }} active">#}
{#            <span class="icon-wrap"><i class="fa {{ item.icon }}"></i></span> {{ item.title }}</a>#}
{#        {% else %}#}
{#            <a href="{{ item.url }}" class="{{ item.class }} ">#}
{#            <span class="icon-wrap"><i class="fa {{ item.icon }}"></i></span> {{ item.title }}</a>#}
{#        {% endif %}#}
{##}
{##}
{#    {% endfor %}#}
        {% for item in menu_list.values %}

        <div class="item">
            <div class="title">
                <i class="{{ item.icon }}"></i>{{ item.title }}
            </div>
            {% for child in item.children %}
                <div class="body {{ item.class }}">
                    <a href="{{ child.url }}" class="{{ child.class }}">{{ child.title }}</a>
                </div>
            {% endfor %}

        </div>

    {% endfor %}
</div>

<script>
    $('.item .title').click(function () {
    $(this).next().toggleClass('hide');
    $(this).parent().siblings().children(".body").addClass("hide")
});
</script>