我有一个由两个Jinja2模板创建的View Consult页面（view-consult.html扩展了base.html模板）。
View Consult页面有一个表格如下
<table class="table">
<tbody>
<tr>
<th scope="row" class="col-consult-left">Patient Name</th>
<td class="col-consult-right"></td>
</tr>
<tr>
<th scope="row">Session Date</th>
<td>03-06-2017</td>
</tr>
<tr>
<th scope="row">Session Time</th>
<td>09:30 am</td>
</tr>
<tr>
<th scope="row">Status</th>
<td>Pending</td>
</tr>
<tr>
<th scope="row">Patient Email</th>
<td>john.smith99@gmail.com</td>
</tr>
<tr>
<th scope="row">Patient Phone</th>
<td>0412 345 678</td>
</tr>
</tbody>
</table>
我通过网址传递了一个密钥到这个页面：
http://localhost:8080/consults/view-consult?key=aghkZXZ-Tm9uZXIVCxIIQ29uc3VsdHMYgICAgIDIkwoM#consult-tab3
此页面的处理程序是：
class ViewConsultPage(webapp2.RequestHandler):
def get(self):
self.request.get('key', None)
consult = ndb.Key(urlsafe=self.request.get('key')).get()
template = JINJA_ENVIRONMENT.get_template('/templates/view-consult.html')
self.response.out.write(template.render())
这没关系，但是当我想开始用hdb实体属性替换html视图中的硬编码consult属性时，例如将患者姓名放在表中，即：
<table class="table">
<tbody>
<tr>
<th scope="row" class="col-consult-left">Patient Name</th>
<td class="col-consult-right"></td>
</tr>
<tr>
<th scope="row">Session Date</th>
<td>03-06-2017</td>
</tr>
<tr>
<th scope="row">Session Time</th>
<td>09:30 am</td>
</tr>
<tr>
<th scope="row">Status</th>
<td>Pending</td>
</tr>
<tr>
<th scope="row">Patient Email</th>
<td>john.smith99@gmail.com</td>
</tr>
<tr>
<th scope="row">Patient Phone</th>
<td>0412 345 678</td>
</tr>
</tbody>
</table>
我收到以下错误：
Traceback (most recent call last):
File "C:\dev\google-cloud-sdk\platform\google_appengine\lib\webapp2-2.5.2\webapp2.py", line 1535, in __call__
rv = self.handle_exception(request, response, e)
File "C:\dev\google-cloud-sdk\platform\google_appengine\lib\webapp2-2.5.2\webapp2.py", line 1529, in __call__
rv = self.router.dispatch(request, response)
File "C:\dev\google-cloud-sdk\platform\google_appengine\lib\webapp2-2.5.2\webapp2.py", line 1278, in default_dispatcher
return route.handler_adapter(request, response)
File "C:\dev\google-cloud-sdk\platform\google_appengine\lib\webapp2-2.5.2\webapp2.py", line 1102, in __call__
return handler.dispatch()
File "C:\dev\google-cloud-sdk\platform\google_appengine\lib\webapp2-2.5.2\webapp2.py", line 572, in dispatch
return self.handle_exception(e, self.app.debug)
File "C:\dev\google-cloud-sdk\platform\google_appengine\lib\webapp2-2.5.2\webapp2.py", line 570, in dispatch
return method(*args, **kwargs)
File "C:\dev\projects\jw-connect\main.py", line 89, in get
self.response.out.write(template.render())
File "C:\dev\google-cloud-sdk\platform\google_appengine\lib\jinja2-2.6\jinja2\environment.py", line 894, in render
return self.environment.handle_exception(exc_info, True)
File "C:\dev\projects\jw-connect\templates\view-consult.html", line 1, in top-level template code
{% extends "/templates/base.html" %}
UndefinedError: 'consult' is undefined
我以为我在RequestHandler中定义了咨询？确实需要传递给模板文件？
额外信息
模板base.html
<!DOCTYPE html>
<html lang="en">
<head>
{% block head %}
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<link rel="icon" href="/images/favicon.ico">
<title>JoggersWorld Connect</title>
<!-- Bootstrap core and custom CSS -->
<link rel="stylesheet" href="/css/bootstrap.min.css">
<link rel="stylesheet" href="/css/style.css">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
{% endblock head %}
</head>
<body>
<!-- App Header -->
<div class="container">
<div class="row">
<div class="col-md-6">
<div class="navbar-brand"><img src="/images/jwconnect-logo.png"></div>
</div>
<div class="col-md-6">
<div class="logged-in-user">
<div class="row">
<div class="col-md-4">
<img src="/images/sportsmed-logo.png">
</div>
<div class="col-md-8">
<div class="logged-in-user-info">
<i class="fa fa-user" aria-hidden="true"></i><strong> Dr Christian Smith</strong>
<br>Sportsmed | Stepney
<br><a href="#">(Log Out)</a>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<!-- App Content -->
{% block content %}
<div class="main-panel-home">
<div class="container">
<div class="row">
<div class="col-md-12">
<div class="jumbotron"></div>
</div>
</div>
<div class="row">
<div class="col-md-12">
<div class="card card-welcome">
<div class="card-block ">
<h3 class="card-title">Let's Get Started</h3>
<p class="card-text" style="font-size:21px; color:#555;">Connect with JoggersWorld - Find your perfect fit</p>
<div class="row">
<div class="col-md-3"></div>
<div class="col-md-3">
<a role="button" class="btn btn-primary btn-lg btn-block" href="/schedule">Schedule</a>
</div>
<div class="col-md-3">
<a role="button" class="btn btn-primary btn-lg btn-block" href="/consults">Consults</a>
</div>
<div class="col-md-3"></div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
{% endblock content %}
<!-- Bootstrap core JavaScript ================================================== -->
<!-- Placed at the end of the document so the pages load faster -->
<script src="https://code.jquery.com/jquery-3.1.1.slim.min.js" integrity="sha384-A7FZj7v+d/sdmMqp/nOQwliLvUsJfDHW+k9Omg/a/EheAdgtzNs3hpfag6Ed950n" crossorigin="anonymous"></script>
<script>window.jQuery || document.write('<script src="assets/js/vendor/jquery.min.js"><\/script>')</script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/tether/1.4.0/js/tether.min.js" integrity="sha384-DztdAPBWPRXSA/3eYEEUWrWCy7G5KFbe8fFjk5JAIxUYHKkDx6Qin1DkWx51bBrb" crossorigin="anonymous"></script>
<script src="/js/bootstrap.min.js"></script>
<!-- IE10 viewport hack for Surface/desktop Windows 8 bug -->
<script src="/js/ie10-viewport-bug-workaround.js"></script>
</body>
</html>
Template view-consult.html
{% extends "/templates/base.html" %}
{% block content %}
<!-- Content - Navbar -->
<nav class="navbar">
<div class="container">
<div class="row">
<div class="col-md-6">
<h2>Consults /<small class="text-muted"> John Smith 03-06-17 09:30</small></h2>
</div>
<div class="col-md-6">
<div class="input-group" id="adv-search">
<input type="text" class="form-control" placeholder="Search consults" />
<div class="input-group-btn">
<div class="btn-group" role="group">
<div class="dropdown dropdown-lg">
<button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown" aria-expanded="false"><span class="caret"></span></button>
<div class="dropdown-menu dropdown-menu-right" role="menu">
<div class="btn-group">
<button type="button" class="btn btn-success btn-filter btn-sm" data-target="completed">Completed</button>
<button type="button" class="btn btn-warning btn-filter btn-sm" data-target="pending">Pending</button>
<button type="button" class="btn btn-danger btn-filter btn-sm" data-target="cancelled">Canceled</button>
<button type="button" class="btn btn-default btn-filter btn-sm" data-target="all">All</button>
</div>
</div>
</div>
<button type="button" class="btn btn-primary"><i class="fa fa-search" aria-hidden="true"></i></button>
</div>
</div>
</div>
</div>
</div>
</nav>
<!-- Content - Main -->
<div class="main-panel-consults">
<div class="container">
<div class="row">
<div class="col-md-2">
<!-- Side Nav -->
<a role="button" class="btn btn-secondary btn-lg" href="/consults"><i class="fa fa-arrow-left" aria-hidden="true"></i></a>
<a role="button" class="btn btn-secondary btn-lg" href="/"><i class="fa fa-home" aria-hidden="true"></i></a>
</div>
<div class="col-md-10">
<!-- Consult Session View -->
<ul class="nav nav-pills nav-justified nav-consult">
<li class="nav-item">
<a data-toggle="tab" class="nav-link nav-link-consult active" href="#consult-tab1">Consult Details</a>
</li>
<li class="nav-item">
<a data-toggle="tab" class="nav-link nav-link-consult" href="#consult-tab2">Clinical Information</a>
</li>
<li class="nav-item">
<a data-toggle="tab" class="nav-link nav-link-consult" href="#consult-tab3">Recommendations</a>
</li>
<li class="nav-item">
<a data-toggle="tab" class="nav-link nav-link-consult" href="#">Edit Consult</a>
</li>
</ul>
<div class="tab-content">
<div id="consult-tab1" class="tab-pane fade show active">
<div class="card">
<div class="card-block">
<div class="consult-card-head"><h4>Consult Details</h4></div>
<table class="table">
<tbody>
<tr>
<th scope="row" class="col-consult-left">Patient Name</th>
<td class="col-consult-right">{{ consult.patient_first }}</td>
</tr>
<tr>
<th scope="row">Session Date</th>
<td>03-06-2017</td>
</tr>
<tr>
<th scope="row">Session Time</th>
<td>09:30 am</td>
</tr>
<tr>
<th scope="row">Status</th>
<td>Pending</td>
</tr>
<tr>
<th scope="row">Patient Email</th>
<td>john.smith99@gmail.com</td>
</tr>
<tr>
<th scope="row">Patient Phone</th>
<td>0412 345 678</td>
</tr>
</tbody>
</table>
</div>
</div>
</div>
<div id="consult-tab2" class="tab-pane fade">
<div class="card">
<div class="card-block">
<div class="consult-card-head"><h4>Clinical Information</h4></div>
<table class="table">
<tbody>
<tr>
<td class="col-consult-left">Orthodics</td>
<td class="col-consult-right">Yes</td>
</tr>
<tr>
<td class="col-consult-left">Foot Type</td>
<td class="col-consult-right">Over Pronated</td>
</tr>
<tr>
<td class="col-consult-left">Foot Measurement</td>
<td class="col-consult-right">11</td>
</tr>
<tr>
<td class="col-consult-left">Injury History</td>
<td class="col-consult-right">Plantar fasciitis on the left heel. Present for 3 months.</td>
</tr>
<tr>
<td class="col-consult-left">Activities</td>
<td class="col-consult-right">Weekly - Basketball training x 2<br>Daily - Jogging on beach
</td>
</tr>
<tr>
<td class="col-consult-left">Provider Recommendation</td>
<td class="col-consult-right">Client needing stable neutral shoe. Has high arch and may potentially need orthotics</td>
</tr>
</tbody>
</table>
</div>
</div>
</div>
<div id="consult-tab3" class="tab-pane fade">
<div class="card">
<div class="card-block">
<div class="consult-card-head"><h4>Recommended Footwear</h4></div>
<div class="row">
<div class="col-md-4" style="background-color:yellow;">
</div>
<div class="col-md-8">
<table class="table">
<tbody>
<tr>
<td><strong>Assessment Notes</strong></td>
</tr>
<tr>
<td>What width would be suitable? Would you like some cushioning under the heel? Add more lines in the recommendation and discussion with the patient and provider. Add more lines in the recommendation and discussion with the patient and provider.</td>
</tr>
</tbody>
</table>
</div>
</div>
<table class="table">
<thead class="thead-default">
<tr>
<th>ID</th>
<th>Category</th>
<th>Brand</th>
<th>Model</th>
<th>Size</th>
</tr>
</thead>
<tbody>
<tr>
<th scope="row"><a href="http://www.joggersworld.com.au/media/catalog/product/cache/1/image/930x/9df78eab33525d08d6e5fb8d27136e95/b/r/brooks_m_ghost_9_-_charcoal_-_1.jpg" target="_blank">51354</a></th>
<td>Jogger</td>
<td>Brooks</td>
<td>Ghost 9</td>
<td>11 US</td>
</tr>
<tr>
<th scope="row">51958</th>
<td>Jogger</td>
<td>Asics Gel</td>
<td>Pursue 3</td>
<td>11 US</td>
</tr>
<tr>
<th scope="row">51425</th>
<td>Jogger</td>
<td>Mizuno</td>
<td>Wave Rider</td>
<td>10.5 US</td>
</tr>
</tbody>
</table>
</div>
</div>
</div>
<div id="consult-tab4" class="tab-pane fade">
<div class="card">
<div class="card-block">
<div class="consult-card-head"><h4>Recommended Footwear</h4></div>
<table class="table">
<tbody>
<tr>
<th scope="row" class="col-consult-left">JW Consultant</th>
<td class="col-consult-right">Mario Covino</td>
</tr>
<tr>
<th scope="row">Assessment Notes</th>
<td>Some quick example text to build on the card title and make up the bulk of the card's content. Card title and make up the bulk of the card's content.</td>
</tr>
<table class="table">
<thead class="thead-default">
<tr>
<th>ID</th>
<th>Category</th>
<th>Brand</th>
<th>Model</th>
<th>Size</th>
</tr>
</thead>
<tbody>
<tr>
<th scope="row">51354</th>
<td>Mark</td>
<td>Otto</td>
<th>Nike</th>
<th>11 US</th>
</tr>
<tr>
<th scope="row">51958</th>
<td>Jacob</td>
<td>Thornton</td>
<td>Asics</td>
<th>11 US</th>
</tr>
<tr>
<th scope="row">51425</th>
<td>Larry</td>
<td>the Bird</td>
<td>Asics</td>
<th>10.5 US</th>
</tr>
</tbody>
</table>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
{% endblock content %}
答案 0 :(得分：2)
有很多问题。首先，您没有将class TabChangeVC: UIViewController{
@IBAction func buttonToSwitchTab(sender: UIButton){
NSNotificationCenter.defaultCenter().postNotificationName("tabSwitch", object: nil)
self.navigationController?.popToRootViewControllerAnimated(true)
}
}
传递给模板。再次检查您使用密钥传递consult的链接，这将导致无法获取数据的问题。我认为这将解决您的问题。
链接更新：
#consult-tab3处理程序更新：
http://localhost:8080/consults/view-consult?key=aghkZXZ-Tm9uZXIVCxIIQ29uc3VsdHMYgICAgIDIkwoM
模板更新：您可以在模型中定义属性时访问这些属性。
class ViewConsultPage(webapp2.RequestHandler):
def get(self):
consult = ndb.Key(urlsafe=self.request.get('key')).get()
template = JINJA_ENVIRONMENT.get_template('/templates/view-consult.html')
template_values = {
'consult': consult
}
self.response.out.write(template.render(template_values))