后台管理页面是系统管理员登录后对网站进行管理的前端页面
后台登录页面，如下图所示
管理员登录后的页面，如下图所示
管理员登录后，在右上角显示的管理员信息，如下图所示
管理员登录后，在页面中间部分的左侧显示管理菜单
管理菜单包括控制面板，标签管理，电影管理，预告管理，会员管理，评论管理，收藏管理，日志管理，权限管理，角色管理，管理员管理等菜单，每个菜单下有子菜单进行细分管理控制
管理员可以使用菜单对网站进行管理
在上面的图片中，可以看到，后台管理页面的顶部部分都是一样的，所以可以把后台管理页面顶部单独定义一个文件admin.html，让其他的页面继承admin.html
后台管理页面的中间部分中，管理员点击子菜单进行管理，每个子菜单显示的显示，其左侧部分又都是相同的，所以也可以把中间部分的左侧菜单也单独定义一个文件grid.html，让每个子菜单显示的页面都包含grid.html文件
1. 定义后台管理页面的左侧菜单部分
在templates的admin目录下创建grid.html，用来保存后台管理页面的左侧菜单部分代码
<ul class="sidebar-menu"> ???<li class="header">管理菜单</li> ???<li class="treeview" id="g-1"> ???????<a href="#"> ???????????<i class="fa fa-home" aria-hidden="true"></i> ???????????<span>首页</span> ???????????<span class="label label-primary pull-right">1</span> ???????</a> ???????<ul class="treeview-menu"> ???????????<li id="g-1-1"> ???????????????<a href="{{ url_for(‘admin.index‘) }}"> ???????????????????<i class="fa fa-circle-o"></i> 控制面板 ???????????????</a> ???????????</li> ???????</ul> ???</li> ???<li class="treeview" id="g-2"> ???????<a href="#"> ???????????<i class="fa fa-tags" aria-hidden="true"></i> ???????????<span>标签管理</span> ???????????<span class="label label-primary pull-right">2</span> ???????</a> ???????<ul class="treeview-menu"> ???????????<li id="g-2-1"> ???????????????<a href="{{ url_for(‘admin.tag_add‘) }}"> ???????????????????<i class="fa fa-circle-o"></i> 添加标签 ???????????????</a> ???????????</li> ???????????<li id="g-2-2"> ???????????????<a href="{{ url_for(‘admin.tag_list‘,page=1) }}"> ???????????????????<i class="fa fa-circle-o"></i> 标签列表 ???????????????</a> ???????????</li> ???????</ul> ???</li> ???<li class="treeview" id="g-3"> ???????<a href="#"> ???????????<i class="fa fa-file-video-o" aria-hidden="true"></i> ???????????<span>电影管理</span> ???????????<span class="label label-primary pull-right">2</span> ???????</a> ???????<ul class="treeview-menu"> ???????????<li id="g-3-1"> ???????????????<a href="{{ url_for(‘admin.movie_add‘) }}"> ???????????????????<i class="fa fa-circle-o"></i> 添加电影 ???????????????</a> ???????????</li> ???????????<li id="g-3-2"> ???????????????<a href="{{ url_for(‘admin.movie_list‘,page=1) }}"> ???????????????????<i class="fa fa-circle-o"></i> 电影列表 ???????????????</a> ???????????</li> ???????</ul> ???</li> ???<li class="treeview" id="g-4"> ???????<a href="#"> ???????????<i class="fa fa-film" aria-hidden="true"></i> ???????????<span>预告管理</span> ???????????<span class="label label-primary pull-right">2</span> ???????</a> ???????<ul class="treeview-menu"> ???????????<li id="g-4-1"> ???????????????<a href="{{ url_for(‘admin.preview_add‘) }}"> ???????????????????<i class="fa fa-circle-o"></i> 添加预告 ???????????????</a> ???????????</li> ???????????<li id="g-4-2"> ???????????????<a href="{{ url_for(‘admin.preview_list‘,page=1) }}"> ???????????????????<i class="fa fa-circle-o"></i> 预告列表 ???????????????</a> ???????????</li> ???????</ul> ???</li> ???<li class="treeview" id="g-5"> ???????<a href="#"> ???????????<i class="fa fa-users" aria-hidden="true"></i> ???????????<span>会员管理</span> ???????????<span class="label label-primary pull-right">1</span> ???????</a> ???????<ul class="treeview-menu"> ???????????<li id="g-5-1"> ???????????????<a href="{{ url_for(‘admin.user_list‘,page=1) }}"> ???????????????????<i class="fa fa-circle-o"></i> 会员列表 ???????????????</a> ???????????</li> ???????</ul> ???</li> ???<li class="treeview" id="g-6"> ???????<a href="#"> ???????????<i class="fa fa-comments" aria-hidden="true"></i> ???????????<span>评论管理</span> ???????????<span class="label label-primary pull-right">1</span> ???????</a> ???????<ul class="treeview-menu"> ???????????<li id="g-6-1"> ???????????????<a href="{{ url_for(‘admin.comment_list‘,page=1) }}"> ???????????????????<i class="fa fa-circle-o"></i> 评论列表 ???????????????</a> ???????????</li> ???????</ul> ???</li> ???<li class="treeview" id="g-7"> ???????<a href="#"> ???????????<i class="fa fa-heart" aria-hidden="true"></i> ???????????<span>收藏管理</span> ???????????<span class="label label-primary pull-right">1</span> ???????</a> ???????<ul class="treeview-menu"> ???????????<li id="g-7-1"> ???????????????<a href="{{ url_for(‘admin.moviecol_list‘,page=1) }}"> ???????????????????<i class="fa fa-circle-o"></i> 收藏列表 ???????????????</a> ???????????</li> ???????</ul> ???</li> ???<li class="treeview" id="g-8"> ???????<a href="#"> ???????????<i class="fa fa-file-text" aria-hidden="true"></i> ???????????<span>日志管理</span> ???????????<span class="label label-primary pull-right">3</span> ???????</a> ???????<ul class="treeview-menu"> ???????????<li id="g-8-1"> ???????????????<a href="{{ url_for(‘admin.oplog_list‘,page=1) }}"> ???????????????????<i class="fa fa-circle-o"></i> 操作日志列表 ???????????????</a> ???????????</li> ???????????<li id="g-8-2"> ???????????????<a href="{{ url_for(‘admin.adminloginlog_list‘,page=1) }}"> ???????????????????<i class="fa fa-circle-o"></i> 管理员登录日志列表 ???????????????</a> ???????????</li> ???????????<li id="g-8-3"> ???????????????<a href="{{ url_for(‘admin.userloginlog_list‘,page=1) }}"> ???????????????????<i class="fa fa-circle-o"></i> 会员登录日志列表 ???????????????</a> ???????????</li> ???????</ul> ???</li> ???<li class="treeview" id="g-9"> ???????<a href="#"> ???????????<i class="fa fa-lock" aria-hidden="true"></i> ???????????<span>权限管理</span> ???????????<span class="label label-primary pull-right">2</span> ???????</a> ???????<ul class="treeview-menu"> ???????????<li id="g-9-1"> ???????????????<a href="{{ url_for(‘admin.auth_add‘) }}"> ???????????????????<i class="fa fa-circle-o"></i> 添加权限 ???????????????</a> ???????????</li> ???????????<li id="g-9-2"> ???????????????<a href="{{ url_for(‘admin.auth_list‘,page=1) }}"> ???????????????????<i class="fa fa-circle-o"></i> 权限列表 ???????????????</a> ???????????</li> ???????</ul> ???</li> ???<li class="treeview" id="g-10"> ???????<a href="#"> ???????????<i class="fa fa-user-secret" aria-hidden="true"></i> ???????????<span>角色管理</span> ???????????<span class="label label-primary pull-right">2</span> ???????</a> ???????<ul class="treeview-menu"> ???????????<li id="g-10-1"> ???????????????<a href="{{ url_for(‘admin.role_add‘) }}"> ???????????????????<i class="fa fa-circle-o"></i> 添加角色 ???????????????</a> ???????????</li> ???????????<li id="g-10-2"> ???????????????<a href="{{ url_for(‘admin.role_list‘,page=1) }}"> ???????????????????<i class="fa fa-circle-o"></i> 角色列表 ???????????????</a> ???????????</li> ???????</ul> ???</li> ???<li class="treeview" id="g-11"> ???????<a href="#"> ???????????<i class="fa fa-user-circle" aria-hidden="true"></i> ???????????<span>管理员管理</span> ???????????<span class="label label-primary pull-right">2</span> ???????</a> ???????<ul class="treeview-menu"> ???????????<li id="g-11-1"> ???????????????<a href="{{ url_for(‘admin.admin_add‘) }}"> ???????????????????<i class="fa fa-circle-o"></i> 添加管理员 ???????????????</a> ???????????</li> ???????????<li id="g-11-2"> ???????????????<a href="{{ url_for(‘admin.admin_list‘,page=1) }}"> ???????????????????<i class="fa fa-circle-o"></i> 管理员列表 ???????????????</a> ???????????</li> ???????</ul> ???</li></ul>2. 定义后台管理页面的顶端部分
在templates的admin目录下创建admin.html,用来保存后台管理页面的顶端部分代码
<!DOCTYPE html><html><head> ???<meta charset="utf-8"> ???<meta http-equiv="X-UA-Compatible" content="IE=edge"> ???<title>微电影管理系统</title> ???<meta content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no" name="viewport"> ???<link rel="shortcut icon" href="{{ url_for(‘static‘,filename=‘base/images/logo.png‘) }}"> ???<link rel="stylesheet" href="{{ url_for(‘static‘,filename=‘admin/bootstrap/css/bootstrap.min.css‘) }}"> ???<link rel="stylesheet" href="{{ url_for(‘static‘,filename=‘fonts/css/font-awesome.min.css‘) }}"> ???<link rel="stylesheet" href="{{ url_for(‘static‘,filename=‘ionicons/css/ionicons.min.css‘) }}"> ???<link rel="stylesheet" href="{{ url_for(‘static‘,filename=‘admin/dist/css/AdminLTE.min.css‘) }}"> ???<link rel="stylesheet" href="{{ url_for(‘static‘,filename=‘admin/dist/css/skins/_all-skins.min.css‘) }}"> ???<link rel="stylesheet" type="text/css" href="{{ url_for(‘static‘,filename=‘admin/plugins/datepicker/datepicker3.css‘) }}"> ???<style> ???????*{ ???????????font-family:"Microsoft YaHei"; ???????} ???????.table>tbody>tr>td, .table>tbody>tr>th, .table> tfoot>tr>td, .table>tfoot>tr>th, .table>thead>tr>td, .table>thead>tr>th{ ???????????vertical-align:middle; ???????????text-align:center; ???????} ???</style> ???{% block css %} ???{% endblock %}</head><body class="hold-transition skin-blue sidebar-mini"><div class="wrapper"> ???<header class="main-header"> ???????<a href="{{ url_for(‘admin.index‘) }}" class="logo"> ???????????<span class="logo-mini"><img src="{{ url_for(‘static‘,filename=‘base/images/logo.png‘) }}" style="height:40px;width:40px;">电影系统</span> ???????????<span class="logo-lg"><img src="{{ url_for(‘static‘,filename=‘base/images/logo.png‘) }}" style="height:40px;width:40px;">微电影管理系统</span> ???????</a> ???????<nav class="navbar navbar-static-top"> ???????????<a href="#" class="sidebar-toggle" data-toggle="offcanvas" role="button"> ???????????????<span class="sr-only">下拉菜单</span> ???????????</a> ???????????<div class="navbar-custom-menu"> ???????????????<ul class="nav navbar-nav"> ???????????????????<li class="dropdown user user-menu"> ???????????????????????<a href="#" class="dropdown-toggle" data-toggle="dropdown"> ???????????????????????????<img src="{{ url_for(‘static‘,filename=‘admin/dist/img/‘ + logo) }}" ????????????????????????????????class="user-image" alt="User Image"> ???????????????????????????<span class="hidden-xs">{{ session.get("admin") }}</span> ???????????????????????</a> ???????????????????????<ul class="dropdown-menu"> ???????????????????????????<li class="user-header"> ???????????????????????????????<img src="{{ url_for(‘static‘,filename=‘admin/dist/img/‘ + logo) }}" ????????????????????????????????????class="img-circle" alt="User Image"> ???????????????????????????????<p> ???????????????????????????????????{{ session.get("admin") }} ???????????????????????????????????<small>{{ online_time }}</small> ???????????????????????????????</p> ???????????????????????????</li> ???????????????????????????<li class="user-footer"> ???????????????????????????????<div class="pull-left"> ???????????????????????????????????<a href="{{ url_for(‘admin.pwd‘) }}" class="btn btn-default btn-flat">修改密码</a> ???????????????????????????????</div> ???????????????????????????????<div class="pull-right"> ???????????????????????????????????<a href="{{ url_for(‘admin.login‘) }}" class="btn btn-default btn-flat">退出系统</a> ???????????????????????????????</div> ???????????????????????????</li> ???????????????????????</ul> ???????????????????</li> ???????????????</ul> ???????????</div> ???????</nav> ???</header> ???<aside class="main-sidebar"> ???????<section class="sidebar"> ???????????<div class="user-panel"> ???????????????<div class="pull-left image"> ???????????????????<img src="{{ url_for(‘static‘,filename=‘admin/dist/img/‘ + logo) }}" class="img-circle" ????????????????????????alt="User Image"> ???????????????</div> ???????????????<div class="pull-left info"> ???????????????????<p>用户 {{ session.get("admin") }}</p> ???????????????????<a href="#"><i class="fa fa-circle text-success"></i> 在线</a> ???????????????</div> ???????????</div> ???????????<form action="#" method="get" class="sidebar-form"> ???????????????<div class="input-group"> ???????????????????<input type="text" name="q" class="form-control" placeholder="搜索..."> ???????????????????<span class="input-group-btn"> ???????????????????????<button type="submit" name="search" id="search-btn" class="btn btn-flat"><i ???????????????????????????????class="fa fa-search"></i> ???????????????????????</button> ???????????????????</span> ???????????????</div> ???????????</form> ???????????{% include ‘admin/grid.html‘ %} ???????</section> ???</aside> ???<div class="content-wrapper"> ???<!--内容--> ???????{% block content %} ???????{% endblock %} ???<!--内容--> ???</div> ???<footer class="main-footer"> ???????<div class="pull-right hidden-xs"> ???????????<b>版本</b> 1.0 ???????</div> ???????<strong>版权 © 2017-2018 归<a href="">xxx</a>.</strong> 所有 ???</footer> ???<div class="control-sidebar-bg"></div></div><script src="{{ url_for(‘static‘,filename=‘admin/plugins/jQuery/jQuery-2.2.0.min.js‘) }}"></script><script src="{{ url_for(‘static‘,filename=‘admin/bootstrap/js/bootstrap.min.js‘) }}"></script><script src="{{ url_for(‘static‘,filename=‘admin/plugins/slimScroll/jquery.slimscroll.min.js‘) }}"></script><script src="{{ url_for(‘static‘,filename=‘admin/plugins/fastclick/fastclick.js‘) }}"></script><script src="{{ url_for(‘static‘,filename=‘admin/dist/js/app.min.js‘) }}"></script><script src="{{ url_for(‘static‘,filename=‘admin/dist/js/demo.js‘) }}"></script><script src="//cdn.bootcss.com/holder/2.9.4/holder.min.js"></script><script src="{{ url_for(‘static‘,filename=‘admin/plugins/datepicker/bootstrap-datepicker.js‘) }}"></script><script src="{{ url_for(‘static‘,filename=‘admin/plugins/datepicker/locales/bootstrap-datepicker.zh-CN.js‘) }}" charset="UTF-8"></script>{% block js %}{% endblock %}</body></html>在admin.html页面中，包含了左侧菜单部分的文件grid.html
3. 定义后台管理页面所需要的上下文处理器
在上面的后台管理页面顶端部分的代码中，使用了logo这个变量，所以要在视图函数中定义上下文处理器来封装这个变量logo
在app的admin目录下的views.py文件中，定义上下文处理器context_processor
import datetimefrom . import adminfrom app.models import Admin# 上下文应用处理器# 封装全局变量，并将其展现到模版里@admin.context_processordef tpl_extra(): ???try: ???????admin = Admin.query.filter_by(name=session["admin"]).first() ???????# 从session中获取admin的值，并在数据库中进行查询 ???except: ???????admin = None ???data=dict( ???????online_time=datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S"), ???????logo="user3-128x128.jpg", ???????admin=admin, ???) ???return data4. 定义后台管理页面的登录控制装饰器
既然是后台管理页面，就不能让普通用户登录进行管理操作，所以可以定义一个登录装饰器，对每个后台管理视图函数进行装饰，使得管理员用户必须登录后才能访问后台管理页面
from functools import wrapsfrom flask import render_template, redirect, url_for, sessionfrom app.models import Admin, Auth, Role# 定义装饰器，必须登录后才能访问后台管理页面def admin_login_req(f): ???@wraps(f) ???def decorated_function(*args, **kwargs): ???????if "admin" not in session: ?????????# 如果session中没有admin变量则重定向到登录页面 ???????????return redirect(url_for("admin.login", next=request.url)) ???????return f(*args, **kwargs) ????return decorated_function定义后台管理页面的权限控制装饰器
对于后台管理权限来说，每个后台管理员的角色不同，能拥有的管理权限也不同，能打开的后台管理页面自然也不同
所以也需要对后台管理员的权限进行控制，不同角色的管理员只能打开自己权限内的管理页面
from functools import wrapsfrom flask import sessionfrom app.models import Admin, Auth, Role# 权限控制装饰器def admin_auth(func): ???@wraps(func) ???def decorated_function(*args, **kwargs): ???????admin = Admin.query.join(Role).filter( ???????????Role.id == Admin.role_id, ???????????Admin.id == session.get("admin_id") ???????).first() ???????auths = admin.role.auths ???????if auths: ???????????auths = list(map(lambda v: int(v), auths.split(","))) ???????????auth_list = Auth.query.all() ???????????urls = [v.url for v in auth_list for val in auths if val == v.id] ???????????rule = request.url_rule ???????????if str(rule) not in urls: ???????????????abort(404) ???????????return func(*args, **kwargs) ???????abort(404) ???return decorated_functionFlask开发微电影网站(五)
原文地址：https://www.cnblogs.com/renpingsheng/p/9129656.html