django的自定义权限

 1 [root@localhost app01]# tailf -25 models.py
 2 
 3 
 4 
 5 class Permission(models.Model):
 6     name = models.CharField("权限名称", max_length=64)
 7     url = models.CharField(‘URL名称‘, max_length=255)
 8     chioces = ((1, ‘GET‘), (2, ‘POST‘))
 9     per_method = models.SmallIntegerField(‘请求方法‘, choices=chioces, default=1)
10     argument_list = models.CharField(‘参数列表‘, max_length=255, help_text=‘多个参数之间用英文半角逗号隔开‘, blank=True, null=True)
11     describe = models.CharField(‘描述‘, max_length=255)
12 
13     def __str__(self):
14         return self.name
15 
16     class Meta:
17         verbose_name = ‘权限表‘
18         verbose_name_plural = verbose_name
19         #权限信息，这里定义的权限的名字，后面是描述信息，描述信息是在django admin中显示权限用的
20         permissions = (
21             (‘views_svns_list‘, ‘查看svn版本库信息表‘),
22             (‘views_onlinecode_info‘, ‘查看推送代码详细信息表‘),
23             (‘views_assets_info‘, ‘查看资产详细信息表‘),
24         )

[root@localhost app01]# cat permission.py
#!/usr/bin/env python
#_*_coding:utf-8_*_
from django.shortcuts import render
from app01 import models
from django.db.models import Q
from django.core.urlresolvers import resolve   #此方法可以将url地址转换成url的name

def perm_check(request, *args, **kwargs):
    url_obj = resolve(request.path_info)
    url_name = url_obj.url_name
    perm_name = ‘‘
    #权限必须和urlname配合使得
    if url_name:
        #获取请求方法，和请求参数
        url_method, url_args = request.method, request.GET
        url_args_list = []
        #将各个参数的值用逗号隔开组成字符串，因为数据库中是这样存的
        for i in url_args:
            url_args_list.append(str(url_args[i]))
        url_args_list = ‘,‘.join(url_args_list)
        #操作数据库
        get_perm = models.Permission.objects.filter(Q(url=url_name) and Q(per_method=url_method) and Q(argument_list=url_args_list))
        if get_perm:
            for i in get_perm:
                perm_name = i.name
                perm_str = ‘school.%s‘ % perm_name
                if request.user.has_perm(perm_str):
                    print(‘====》权限已匹配‘)
                    return True
            else:
                print(‘---->权限没有匹配‘)
                return False
        else:
            return False
    else:
        return False   #没有权限设置，默认不放过


def check_permission(fun):    #定义一个装饰器，在views中应用
    def wapper(request, *args, **kwargs):
        if perm_check(request, *args, **kwargs):  #调用上面的权限验证方法
            return fun(request, *args, **kwargs)
        return render(request, ‘403.html‘, locals())
    return wapper

from app01.permission import  check_permission

@login_required(login_url=‘/login/‘)
@check_permission
def svnupdate(request,svn_id,u_type):
    pass