symfony框架Twig模板语言的使用
php的Twig模板语言：类似python的jinja2，语法什么的都是类似python
模板继承
模板路径：app/Resources/views/
母版：base.html.twig
<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
<!-- 上述3个meta标签*必须*放在最前面，任何其他内容都*必须*跟随其后！ -->
<title>{% block title %}自定义标题{% endblock title %}</title>
<!-- 新 Bootstrap 核心 CSS 文件 -->
<link rel="stylesheet" href="//cdn.bootcss.com/bootstrap/3.3.5/css/bootstrap.min.css">
<!-- 可选的Bootstrap主题文件（一般不用引入） -->
<link rel="stylesheet" href="//cdn.bootcss.com/bootstrap/3.3.5/css/bootstrap-theme.min.css">
<!-- jQuery文件。务必在bootstrap.min.js 之前引入 -->
<script src="//cdn.bootcss.com/jquery/1.11.3/jquery.min.js"></script>
<!-- 最新的 Bootstrap 核心 JavaScript 文件 -->
<script src="//cdn.bootcss.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
</head>
<body>
<div class="row bg-primary">
<div class="col-sm-1 col-xs-1"></div>
<div class="col-sm-11 col-xs-11"><h1><a href="" style="text-decoration: none;color: white;">MyWebSite</a></h1></div>
</div>
{% block body %}
{% endblock body %}
</body>
</html>
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list.html.twig
{% extends "base.html.twig" %}
{% block title %}MyWebSite{% endblock title %}
{% block body %}
<div class="row jumbotron">
<div class="col-md-1 col-xs-1"></div>
<div class="col-md-10 col-xs-10"><h1>Welcome to MyWebSite!</h1></div>
<div class="col-md-1 col-xs-1"></div>
</div>
{% endblock body %}
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show.html.twig
{% extends "base.html.twig" %}
{% block title %}博客内容{% endblock title %}
{% block body %}
<div class="row jumbotron">
<div class="col-md-1 col-xs-1"></div>
<div class="col-md-10 col-xs-10"><h1>我的第一篇博客</h1></div>
<div class="col-md-1 col-xs-1"></div>
</div>
{% endblock body %}
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list.html.twig 和 show.html.twig 都继承了 base.html.twig，拥有了相同的页面布局
变量传递
文件路径：src/AppBundle/Controller/BlogController.php
return $this->render('blog/show.html.twig', array('title' => '博客标题', 'content' => '博客内容'));
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修改show.html.twig中block body
<div class="row jumbotron">
<div class="col-md-1 col-xs-1"></div>
<div class="col-md-10 col-xs-10"><h1>{{ title }}</h1></div>
<div class="col-md-1 col-xs-1"></div>
</div>
<div class="row">
<div class="col-md-1 col-xs-1"></div>
<div class="col-md-10 col-xs-10"><h4>{{ content }}</h4></div>
<div class="col-md-1 col-xs-1"></div>
</div>
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变量传递通过 {{ }} 这样的符号来传递
传递类型举例读取方式变量array(‘title’ => ‘博客标题’){{ title }}array结构array(‘content’ => $content){{ content[‘time’] }}类结构array(‘content’ => $content){{ content.time }}php原生方法去掉 html标签方法{{ content | strip_tags }}
流程控制
src/AppBundle/Controller/BlogController.php
$content = array();
$content[] = array('category' => '类别1', 'text' => '内容1');
$content[] = array('category' => '类别2', 'text' => '内容2');
$content[] = array('category' => '类别1', 'text' => '内容3');
$content[] = array('category' => '类别2', 'text' => '内容4');
return $this->render('blog/show.html.twig', array('title' => '博客标题', 'content' => $content));
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修改app/Resources/views/blog/show.html.twig，改成：
{% for cont in content %}
{% if cont['category'] == '类别2' %}
<div class="row">
<div class="col-md-1 col-xs-1"></div>
<div class="col-md-10 col-xs-10"><h4>{{ cont['text'] }}</h4></div>
<div class="col-md-1 col-xs-1"></div>
</div>
{% endif %}
{% endfor %}
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循环遍历 : {% for cont in content %}
逻辑判断: {% if cont[‘category’] == ‘类别2’ %}
链接生成
<a href='{{ path('blog_list') }}'>{{ cont['text'] }}</a>
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blog_list为router.yml里边配置的路由名称
