展示书籍列表：
首先修改原先的 book_list.html 的代码：
<!DOCTYPE html>
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<html lang="zh-CN">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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<meta name="description" content="">
<meta name="author" content="">
<link rel="icon" href="/go.html?url=https://v3.bootcss.com/favicon.ico">
<title>书籍列表管理</title>
<!-- Bootstrap core CSS -->
<link href="/go.html?url=/static/bootstrap/css/bootstrap.min.css" rel="stylesheet">
<!-- Custom styles for this template -->
<link href="/go.html?url=/static/dashboard.css" rel="stylesheet">
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<nav class="navbar navbar-inverse navbar-fixed-top">
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<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar"
aria-expanded="false" aria-controls="navbar">
<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="/go.html?url=https://v3.bootcss.com/examples/dashboard/#">图书管理系统</a>
</div>
<div id="navbar" class="navbar-collapse collapse">
<ul class="nav navbar-nav navbar-right">
<li><a href="/go.html?url=https://v3.bootcss.com/examples/dashboard/#">Dashboard</a></li>
<li><a href="/go.html?url=https://v3.bootcss.com/examples/dashboard/#">Settings</a></li>
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</ul>
<form class="navbar-form navbar-right">
<input type="text" class="form-control" placeholder="Search...">
</form>
</div>
</div>
</nav>
<div class="container-fluid">
<div class="row">
<div class="col-sm-3 col-md-2 sidebar">
<!-- active 表示当前页面，会加亮 -->
<ul class="nav nav-sidebar">
<li><a href="/go.html?url=/publisher_list/">出版社列表页</a></li>
<li class="active"><a href="/go.html?url=/book_list/">书籍列表</a></li>
<li><a href="/go.html?url=/author_list/">作者列表</a></li>
</ul>
</div>
<div class="col-sm-9 col-sm-offset-3 col-md-10 col-md-offset-2 main">
<h1 class="page-header">书籍管理页面</h1>
<div class="panel panel-primary">
<!-- Default panel contents -->
<div class="panel-heading">书籍列表 <i class="fa fa-thumb-tack pull-right"></i></div>
<div class="panel-body">
<div class="row" style="margin-bottom: 15px">
<div class="col-md-4">
<div class="input-group">
<input type="text" class="form-control" placeholder="Search for...">
<span class="input-group-btn">
<button class="btn btn-default" type="button">搜索</button>
</span>
</div><!-- /input-group -->
</div><!-- /.col-md-4 -->
<!-- 跳转到另一页面，添加新的书籍 -->
<div class="col-md-1 pull-right">
<a href="/go.html?url=/add_book/" class="btn btn-success">新增</a>
</div>
</div><!-- /.row -->
<table class="table table-bordered">
<thead>
<tr>
<th>#</th>
<th>id</th>
<th>书名</th>
<th>出版社名称</th>
<th>操作</th>
</tr>
</thead>
<!-- 从原先的 book_list.html 拷贝过来的代码-->
<tbody>
{% for book in book_list %}
<tr>
<td>{{ forloop.counter }}</td>
<td>{{ book.id }}</td>
<td>{{ book.title }}</td>
<td>{{ book.publisher.name }}</td>
<td>
<a class="btn btn-danger" href="/go.html?url=/del_book/?id={{ book.id }}">删除</a>
<a class="btn btn-info" href="/go.html?url=/edit_book/?id={{ book.id }}">编辑</a>
</td>
</tr>
{% endfor %}
</tbody>
</table>
<nav aria-label="Page navigation" class="text-right">
<ul class="pagination">
<li>
<a href="/go.html?url=#" aria-label="Previous">
<span aria-hidden="true">«</span>
</a>
</li>
<li><a href="/go.html?url=#">1</a></li>
<li><a href="/go.html?url=#">2</a></li>
<li><a href="/go.html?url=#">3</a></li>
<li><a href="/go.html?url=#">4</a></li>
<li><a href="/go.html?url=#">5</a></li>
<li>
<a href="/go.html?url=#" aria-label="Next">
<span aria-hidden="true">»</span>
</a>
</li>
</ul>
</nav>
</div>
</div>
</div>
</div>
</div>
<div class="modal fade" tabindex="-1" role="dialog" id="myModal">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span>
</button>
<h4 class="modal-title">用户信息</h4>
</div>
<div class="modal-body">
<form class="form-horizontal">
<div class="form-group">
<label for="inputEmail3" class="col-sm-2 control-label">邮箱</label>
<div class="col-sm-10">
<input type="email" class="form-control" id="inputEmail3" placeholder="Email">
</div>
</div>
<div class="form-group">
<label for="inputPassword3" class="col-sm-2 control-label">密码</label>
<div class="col-sm-10">
<input type="password" class="form-control" id="inputPassword3" placeholder="Password">
</div>
</div>
</form>
</div>
<div class="modal-footer">
<button type="button" class="btn btn-default" data-dismiss="modal">取消</button>
<button type="button" class="btn btn-primary">保存</button>
</div>
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</div><!-- /.modal -->
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</body>
</html>
<!D
