一:模版的继承
1.什么是模板继承?
你需要事先在你想要使用的主页面上划定区域做好标记,之后在子页面继承的时候你就可以使用在主页面划定的区域,也就意味着,如果你不划定任何区域,那么你子页面将无法修改主页面内容
2.使用继承流程原理
1.先在你想要继承的主页面上通过bolck划定你将来可能要改的区域,并做好标记
2.在子页面上继承extends,利用block自动提示选取你想要修改的内容区域标记名称
3.在子页面extends中写你要修改主页面标记区的代码
4.然后就可以让子页面的修改内容渲染到主页面的划定区域上
你们有没有见过一些网站
这些网站页面整体都大差不差 只是某一些局部在做变化
3.模板继承语法
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1. 继承 { % extends '模版页面名' % } 2. 局部修改 # 1.你需要先去模版页面中划定可以被修改的区域 { % block '名字' % } 模版内容( 666 ) { % endblock % } # 2.子页面中即成了模版页面之后 就可以根据名字修改 { % block '名字' % } 子版内容 子版页面吃了可以自己写自己的之外 还可以继续使用模版的内容 {{ block. super }} 666 {{ block. super }} 666 {{ block. super }} 666 {{ block. super }} 666 { % endblock % } |
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4. 一般情况下模版页面上应该至少有三块可以被修改的区域 1.css 区域 2.html 区域 3.js 区域 每一个子页面就都可以有自己独有的css代码 html代码 js代码 互相之间 互不干扰 # 子页面css { % block css % } { % endblock % } { % block content % } { % endblock % } # 子页面js { % block js % } { % endblock % } |
二:模板的继承使用
1.案例需求
1.实现用户点击登录右侧局部出现登录页面,点击注册右侧出现注册页面
urls.py
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# 模板的继承 url(r '^home/' , views.home), # 创建login路由 url(r '^login/' , views.login), # 创建reg路由 url(r '^reg/' , views.reg), |
views.py
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def home(request): return render(request, 'home.html' ) def login(request): return render(request, 'login.html' ) def reg(request): return render(request, 'reg.html' ) |
home.html
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<!DOCTYPE html> < html lang = "en" > < head > < meta charset = "UTF-8" > < title >Title</ title > <!--bootstrap引入 CSS CDN--> < link href = "https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/3.4.1/css/bootstrap.min.css" rel = "stylesheet" > <!--jQuery引入 CDN--> < script src = "https://cdn.bootcdn.net/ajax/libs/jquery/3.4.1/jquery.min.js" ></ script > <!--Bootstrap引入 Js CDN--> < script src = "https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/3.4.1/js/bootstrap.min.js" ></ script > {% block css %} {% endblock %} </ head > < body > {#导航条#} < nav class = "navbar navbar-inverse" > < div class = "container-fluid" > <!-- Brand and toggle get grouped for better mobile display --> < div class = "navbar-header" > < button type = "button" class = "navbar-toggle collapsed" data-toggle = "collapse" data-target = "#bs-example-navbar-collapse-1" aria-expanded = "false" > < span class = "sr-only" >Toggle navigation</ span > < span class = "icon-bar" ></ span > < span class = "icon-bar" ></ span > < span class = "icon-bar" ></ span > </ button > < a class = "navbar-brand" href = "#" >Brand</ a > </ div > <!-- Collect the nav links, forms, and other content for toggling --> < div class = "collapse navbar-collapse" id = "bs-example-navbar-collapse-1" > < ul class = "nav navbar-nav" > < li class = "active" >< a href = "#" >Link < span class = "sr-only" >(current)</ span ></ a ></ li > < li >< a href = "#" >Link</ a ></ li > < li class = "dropdown" > < a href = "#" class = "dropdown-toggle" data-toggle = "dropdown" role = "button" aria-haspopup = "true" aria-expanded = "false" >Dropdown < span class = "caret" ></ span ></ a > < ul class = "dropdown-menu" > < li >< a href = "#" >Action</ a ></ li > < li >< a href = "#" >Another action</ a ></ li > < li >< a href = "#" >Something else here</ a ></ li > < li role = "separator" class = "divider" ></ li > < li >< a href = "#" >Separated link</ a ></ li > < li role = "separator" class = "divider" ></ li > < li >< a href = "#" >One more separated link</ a ></ li > </ ul > </ li > </ ul > < form class = "navbar-form navbar-left" > < div class = "form-group" > < input type = "text" class = "form-control" placeholder = "Search" > </ div > < button type = "submit" class = "btn btn-default" >Submit</ button > </ form > < ul class = "nav navbar-nav navbar-right" > < li >< a href = "#" >Link</ a ></ li > < li class = "dropdown" > < a href = "#" class = "dropdown-toggle" data-toggle = "dropdown" role = "button" aria-haspopup = "true" aria-expanded = "false" >Dropdown < span class = "caret" ></ span ></ a > < ul class = "dropdown-menu" > < li >< a href = "#" >Action</ a ></ li > < li >< a href = "#" >Another action</ a ></ li > < li >< a href = "#" >Something else here</ a ></ li > < li role = "separator" class = "divider" ></ li > < li >< a href = "#" >Separated link</ a ></ li > </ ul > </ li > </ ul > </ div > <!-- /.navbar-collapse --> </ div > <!-- /.container-fluid --> </ nav > {#左右不留白#} < div class = "container-fluid" > {#row 划分12份区域#} < div class = "row" > {# 左侧分三份#} < div class = "col-md-3" > {#侧边栏 #} < div class = "list-group" > < a href = "/home/" class = "list-group-item active" > 首页 </ a > < a href = "/login/" class = "list-group-item" >登录</ a > < a href = "/reg/" class = "list-group-item" >注册</ a > </ div > </ div > < div class = "col-md-9" > {# 面板#} < div class = "panel panel-primary" > < div class = "panel-heading" > < h3 class = "panel-title" >Panel title</ h3 > </ div > < div class = "panel-body" > {# 划分区域 不影响区域展示,仅仅是标记 区域名#} {% block content %} {# 巨幕#} < div class = "jumbotron" > < h1 >Hello, world!</ h1 > < p >...</ p > < p >< a class = "btn btn-primary btn-lg" href = "#" role = "button" >Learn more</ a ></ p > </ div > {% endblock %} </ div > </ div > </ div > </ div > </ div > {% block js %} {% endblock %} </ body > </ html > |
login.html
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{#login 页面全部清空#} {#login继承home主页面#} {% extends 'home.html' %} {#子页面的css代码 #} {% block css %} < style > h1 { color: red; } </ style > {% endblock %} {#block 指定选择主页面划分的(区域) 可以进行修改 #} {% block content %} < h1 class = "text-center" >登录页面</ h1 > < form action = "" > < p >username: < input type = "text" class = "form-control" ></ p > < p >password: < input type = "text" class = "form-control" ></ p > < input type = "submit" class = "btn btn-success" > </ form > {% endblock %} {# 子页面的js代码 #} {% block js %} < script > alert('登录页面') </ script > {% endblock %} |
reg.html
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{#reg页面全部清空#} {#reg继承home主页面#} {% extends 'home.html' %} {#子页面的css代码 #} {% block css %} < style > h1 { color: seagreen; } </ style > {% endblock %} {#block 指定选择主页面划分的(区域) 可以进行修改 #} {% block content %} < h1 class = "text-center" >注册页面</ h1 > < form action = "" > < p >username: < input type = "text" class = "form-control" ></ p > < p >password: < input type = "text" class = "form-control" ></ p > < input type = "submit" class = "btn btn-danger" > </ form > {% endblock %} {# 子页面的js代码 #} {% block js %} < script > alert('注册') </ script > {% endblock %} |
2.总结模板继承
一般情况下 模版的页面上划定的区域越多 那么该模版的扩展性就越高
但是如果太多 那还不如自己直接写
三:模版的导入
1.模板导入
将页面的某一个局部当成模块的形式
哪个地方需要就可以直接导入使用即可
2.模板导入格式
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{ % include '导入html文件名' % } |
3.模板导入使用
sss.html
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< h1 >我是sss.html页面</ h1 > |
login.html子页面
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{% endblock %} {#block 指定选择主页面划分的(区域) 可以进行修改 #} {% block content %} < h1 class = "text-center" >登录页面</ h1 > < form action = "" > < p >username: < input type = "text" class = "form-control" ></ p > < p >password: < input type = "text" class = "form-control" ></ p > < input type = "submit" class = "btn btn-success" > </ form > < p >模板的导入</ p > {% include 'sss.html' %} {% endblock %} |
4.使用结果
总结
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原文链接:https://www.cnblogs.com/goOJBK/p/15955074.html