https://www.cnblogs.com/venicid/p/7772742.html#_label0css
overflow: auto; //在a和b模板中進行切換
a 模板 :左側菜單跟隨滾動條
b模板 左側以及上不動 ****
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title>
<style type="text/css"> .header { width: 100%; height: 60px; background-color: #369; } .right { float: right; } .left { float: left; } .menu { position: absolute; top: 60px; left: 0; bottom: 0; background-color: gainsboro; width: 20%; } .content { position: absolute; top: 60px; right: 0; bottom: 0; background-color: mediumpurple; width: 80%; overflow: auto; //在a和b模板中進行切換 } </style> </head> <body> <div class="header"></div> <div class="container"> <div class="menu left"> 1111 </div> <div class="content right">222 {% block content %} {% endblock %} </div> </div> </body> </html>
users.html / roles.html 繼承自 base.html
users.htmlhtml
{% extends 'base.html' %} {% block con %} <h4>用戶列表</h4> {% for user in user_list %} <p>{{ user }}</p> {% endfor %} {% endblock con%}
登陸成功後,就已經註冊了session
request.session['permission_list'] = permission_list
permission_list = request.session.get('permission_list')
簡單控制: {% if "users/add" in permissions_list%}
BUT: 很差,不想讓 if "/users/add/" 寫死,會有 "/roles/add/" 狀況,不健壯!怎麼辦? 不該該根據表名,去判斷!!
權限不一樣,按鈕顯示就不一樣 如何作呢?
上面問題的解決辦法:
爲了擴展,
# 把兩條線 合成一個線
/users/..
/roles/...
注意:list_display = []
注意點:
加了一個權限組表,
將每張表的增刪改查,劃到一個組裏面!
不管多複雜的,最終必定是對數據庫的(增刪改查)
修改表結構,從新處理中間件,登陸頁面:
目的:全是爲了按鈕的粒度,同一個模板,同一個視圖,
顯示不一樣的數據,權限
from django.db import models # Create your models here. class User(models.Model): name = models.CharField(max_length=32) pwd = models.CharField(max_length=32) roles = models.ManyToManyField(to='Role') def __str__(self): return self.name class Role(models.Model): title = models.CharField(max_length=32) permissions = models.ManyToManyField(to="Permission") def __str__(self): return self.title class Permission(models.Model): title = models.CharField(max_length=32) url = models.CharField(max_length=32) action = models.CharField(max_length=32, default="") group = models.ForeignKey(to="PermissionGroup", on_delete=True) def __str__(self): return self.title class PermissionGroup(models.Model): title = models.CharField(max_length=32 ) def __str__(self): return self.title
3.登陸以後,重寫 initial_session(user,request)
就是:
# 在session中註冊權限列表 用戶權限
# request.session['permission_list'] = permission_list
不該該是list 而是dict
# 在session中註冊權限字典
request.session['permission_dict'] = permission_dict
注意點:git
permission = user.roles.all().values('permission__url', 'permission__group_id', 'permission__action').distinct()
對數據的處理,以組爲鍵github
{1: {'urls': ['/users/', '/users/add/', '/users/delete/(\\d+)/', '/users/edit/(\\d+)/'], 'actions': ['list', 'add', 'delete', 'edit']}, 2: {'urls': ['/roles/'], 'actions': ['list']}}
# -*- coding: utf-8 -*- # @Time : 2018/08/11 0011 9:24 # @Author : Venicid def initial_session(request,user): # 方案2 permissions = user.roles.all().values("permissions__url", "permissions__group_id","permissions__action").distinct() print(permissions) # <QuerySet [{'permissions__url': '/users/', # 'permissions__group_id': 1, # 'permissions__action': 'list'}]> permission_dict = {} for item in permissions: gid = item.get("permissions__group_id") if not gid in permission_dict: permission_dict[gid] = { "urls":[item["permissions__url"],], "actions":[item["permissions__action"],] } else: permission_dict[gid]["urls"].append(item["permissions__url"]) permission_dict[gid]["actions"].append(item["permissions__action"]) print(permission_dict) # {1: {'urls': ['/users/'], 'actions': ['list']}} request.session["permission_dict"] = permission_dict # 方案1: """ permissions = user.roles.all().values("permissions__url").distinct() permission_list = [] for item in permissions: permission_list.append(item['permissions__url']) print(permission_list) # ['/users/', '/users/add', '/users/delete/(\\d+)', '/users/edit/(\\d+)'] request.session["permission_list"] = permission_list """ """ values : for role in user.roles.all(): # <QuerySet [<Role: 保潔>, <Role: 銷售>]> temp.append({ "title":role.title, "permissions_url":role.permissions.all() }) # <QuerySet [{'title': '保潔', 'permissions__url': '/users/'}, # {'title': '銷售', 'permissions__url': '/users/'}, # {'title': '銷售', 'permissions__url': '/users/add'}]> """
# 注意:妙 !!
request.actions = item["actions"]
# -*- coding: utf-8 -*- # @Time : 2018/08/11 0011 9:04 # @Author : Venicid import re from django.utils.deprecation import MiddlewareMixin from django.shortcuts import HttpResponse, redirect class ValidPermission(MiddlewareMixin): def process_request(self, request): # 當前訪問路徑 current_path = request.path_info # 一、檢驗是否屬於白名單 白名單,不須要任何權限的url # 正則匹配 valid_url_list = ['/login/', '/reg/', '/admin/.*'] for valid_url in valid_url_list: ret = re.match(valid_url, current_path) if ret: return None # 二、校驗是否登陸 user_id = request.session.get("user_id") if not user_id: return redirect('/login/') # 三、校驗權限2 permission_dict = request.session.get("permission_dict", {}) # {1: {'urls': ['/users/'], 'actions': ['list']}} for item in permission_dict.values(): urls = item["urls"] for reg in urls: reg = "^%s$" % reg ret = re.match(reg, current_path) if ret: print("actions",item["actions"]) request.actions = item["actions"] return None return HttpResponse("沒有訪問權限") # 三、校驗權限1 """ permission_list = request.session.get("permission_list",[]) print(permission_list) flag = False for permission in permission_list: permission = "^%s$" % permission # print(111111111,permission) # print(current_path) ret = re.match(permission, current_path) if ret: flag = True break if not flag: return HttpResponse("沒有訪問權限") return None """
from django.shortcuts import render, HttpResponse # Create your views here. from rbac.models import * from rbac.service.perssions import * class Per(object): def __init__(self, actions): self.actions = actions def add(self): return "add" in self.actions def delete(self): return "delete" in self.actions def edit(self): return "edit" in self.actions def list(self): return "list" in self.actions def users(request): user_list = User.objects.all() permission_list = request.session.get("permission_list") # 查詢當前登陸人的名字 id = request.session.get("user_id") user = User.objects.filter(id=id).first() print(user) per = Per(request.actions) return render(request, "users.html", locals()) def add_user(request): return HttpResponse('add user') def delete_user(request, id): return HttpResponse('delete_user') def edit_user(request, id): return HttpResponse('edit_user') def roles(request): role_list = Role.objects.all() per = Per(request.actions) print(request.actions) return render(request, "roles.html", locals()) def login(request): if request.method == "POST": user = request.POST.get("user") pwd = request.POST.get("pwd") user = User.objects.filter(name=user, pwd=pwd).first() if user: ############## 在session中註冊用戶 request.session['user_id'] = user.pk ############# 在session中註冊權限list initial_session(request, user) return HttpResponse("登陸成功") return render(request, 'login.html', locals())
不一樣的用戶,具備不一樣的權限,ajax
權限不一樣,顯示的按鈕就不一樣!!數據庫
只有查看,有必要放到菜單欄!
即:action == list 放到 菜單欄中
注意:permission__group__title 還能夠這樣用,跨了3張表!!
# -*- coding: utf-8 -*- # @Time : 2018/08/11 0011 9:24 # @Author : Venicid def initial_session(request,user): # 方案2 permissions = user.roles.all().values("permissions__url", "permissions__group_id","permissions__action").distinct() print(permissions) # <QuerySet [{'permissions__url': '/users/', # 'permissions__group_id': 1, # 'permissions__action': 'list'}]> permission_dict = {} for item in permissions: gid = item.get("permissions__group_id") if not gid in permission_dict: permission_dict[gid] = { "urls":[item["permissions__url"],], "actions":[item["permissions__action"],] } else: permission_dict[gid]["urls"].append(item["permissions__url"]) permission_dict[gid]["actions"].append(item["permissions__action"]) print(permission_dict) # {1: {'urls': ['/users/'], 'actions': ['list']}} request.session["permission_dict"] = permission_dict # 註冊菜單權限 permissions = user.roles.all().values("permissions__url", "permissions__action", "permissions__group__title").distinct() print(permissions) menu_permission_list = [] for item in permissions: if item["permissions__action"] == "list": menu_permission_list.append((item["permissions__url"], item["permissions__group__title"])) print(menu_permission_list) # [('/users/', '用戶組'), ('/roles/', '角色組')] request.session["menu_permission_list"] = menu_permission_list # 方案1: """ permissions = user.roles.all().values("permissions__url").distinct() permission_list = [] for item in permissions: permission_list.append(item['permissions__url']) print(permission_list) # ['/users/', '/users/add', '/users/delete/(\\d+)', '/users/edit/(\\d+)'] request.session["permission_list"] = permission_list """ """ values : for role in user.roles.all(): # <QuerySet [<Role: 保潔>, <Role: 銷售>]> temp.append({ "title":role.title, "permissions_url":role.permissions.all() }) # <QuerySet [{'title': '保潔', 'permissions__url': '/users/'}, # {'title': '銷售', 'permissions__url': '/users/'}, # {'title': '銷售', 'permissions__url': '/users/add'}]> """
能夠實現,菜單顯示!可是不行,爲何?
由於模板繼承,只繼承樣式,不繼承數據!全部須要用到 自定義標籤(inclusion_tag)
# -*- coding: utf-8 -*- # @Time : 2018/08/12 0012 16:11 # @Author : Venicid from django import template register = template.Library() @register.inclusion_tag("rbac/menu.html") def get_menu(request): # 獲取當前用戶能夠放到菜單欄中的權限 menu_permission_list = request.session.get("menu_permission_list") print(menu_permission_list) return {"menu_permission_list":menu_permission_list}
+django
屬於權限的就建在rbac的APP裏,由於rpac最後是可插拔的組件!!
users.html / roles.html / base.html / menu.html
是和權限相關的,因此應該放在 rbac/templates/... 方便之後copy走!!
djangod的render去渲染 .html 時,先到項目的 templates 下找,找不到,再到App下 templates 下找,
最後找不到,才報錯!!
若是多個App的templates 下的.html重名怎麼辦? django 會根據註冊的順序顯示!
解決辦法:
項目/rbac/templates/rbac/xxx.html
這時調用:
return render(request, 'rbac/users.html', locals())
注意:
templates 或者 templatetag 注意多個app下面 的文件名 有可能都會重名!!
辦法:就是 eg:/rbac/templates/rbac/xxx.html 或者不起重名
知識點:路徑自動添加問題:
http://127.0.0.1:8010/users
http://127.0.0.1:8010/users/
瀏覽器發請求:
django 發現以後,發了一個重定向的 url 加了一個 /
全部才能匹配上:
path('users/', views.users),
如何讓django不給瀏覽器發重定向,不加 /
配置:
APPEND_SLASH = False
APPEND_SLASH = True # 默認爲 True
ajax 也是,django會默認的加 / 發重定向
ajax 也是,django會默認的加 / 發重定向