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HarmonyOS
我正在为一门课程做我的项目，但我现在完全被困住了。我正在创建一个网站以通过 paypal 销售产品，但 paypal 退货/取消页面未正确呈现。我已经按照课程中的示例进行操作并检查了代码一百次，但显然我遗漏了一些东西。
当我转到产品时出现错误，点击立即购买，登录贝宝，然后取消购买或购买产品并返回商家页面。 paypal_return.html 和 paypal_cancel.html 是保存在 templates/paypal/ 下的 2 个模板
谁能看到我错过了什么？
在这里你可以看到完整的代码 https://github.com/IreneG5/spss_online
追溯
Environment:
Request Method: GET
Request URL: http://127.0.0.1:8000/paypal-cancel/
Django Version: 1.11.4
Python Version: 2.7.12
Installed Applications:
['django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'django_forms_bootstrap',
'paypal.standard.ipn',
'home',
'accounts',
'paypal_store',
'products']
Installed Middleware:
['django.middleware.security.SecurityMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware']
Template error:
In template C:\Users\irene\Documents\Full-Stack-Developer\Stream3\Project\spss_online\templates\base.html, error at line 10
Reverse for '' not found. '' is not a valid view function or pattern name. 1 : {% load staticfiles %}
2 : <!DOCTYPE html>
3 : <html lang="en">
4 : <head>
5 : <meta charset="UTF-8">
6 : <title>Buy SPSS Online</title>
7 : <meta name="viewport" content="width=device-width, initial-scale=1.0">
8 : <meta name="description" content="">
9 : <meta name="author" content="">
10 : <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/bootswatch/3.3.7/cerulean/bootstrap.min.css">
11 : <link rel="stylesheet" href="{% static 'css/style.css' %}">
12 :
13 :
14 : </head>
15 : <body>
16 : <div class="container">
17 : <div class='container-fluid'>
18 : <nav id="menu" class="navbar navbar-inverse">
19 : <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#myNavbar">
20 : <span class="icon-bar"></span>
Traceback:
File "C:\Users\irene\virtualenv\spss_online_env\lib\site-packages\django\core\handlers\exception.py" in inner
41. response = get_response(request)
File "C:\Users\irene\virtualenv\spss_online_env\lib\site-packages\django\core\handlers\base.py" in _get_response
187. response = self.process_exception_by_middleware(e, request)
File "C:\Users\irene\virtualenv\spss_online_env\lib\site-packages\django\core\handlers\base.py" in _get_response
185. response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "C:\Users\irene\Documents\Full-Stack-Developer\Stream3\Project\spss_online\paypal_store\views.py" in paypal_cancel
15. return render(request, 'paypal/paypal_cancel.html', args)
File "C:\Users\irene\virtualenv\spss_online_env\lib\site-packages\django\shortcuts.py" in render
30. content = loader.render_to_string(template_name, context, request, using=using)
File "C:\Users\irene\virtualenv\spss_online_env\lib\site-packages\django\template\loader.py" in render_to_string
68. return template.render(context, request)
File "C:\Users\irene\virtualenv\spss_online_env\lib\site-packages\django\template\backends\django.py" in render
66. return self.template.render(context)
File "C:\Users\irene\virtualenv\spss_online_env\lib\site-packages\django\template\base.py" in render
207. return self._render(context)
File "C:\Users\irene\virtualenv\spss_online_env\lib\site-packages\django\template\base.py" in _render
199. return self.nodelist.render(context)
File "C:\Users\irene\virtualenv\spss_online_env\lib\site-packages\django\template\base.py" in render
990. bit = node.render_annotated(context)
File "C:\Users\irene\virtualenv\spss_online_env\lib\site-packages\django\template\base.py" in render_annotated
957. return self.render(context)
File "C:\Users\irene\virtualenv\spss_online_env\lib\site-packages\django\template\loader_tags.py" in render
177. return compiled_parent._render(context)
File "C:\Users\irene\virtualenv\spss_online_env\lib\site-packages\django\template\base.py" in _render
199. return self.nodelist.render(context)
File "C:\Users\irene\virtualenv\spss_online_env\lib\site-packages\django\template\base.py" in render
990. bit = node.render_annotated(context)
File "C:\Users\irene\virtualenv\spss_online_env\lib\site-packages\django\template\base.py" in render_annotated
957. return self.render(context)
File "C:\Users\irene\virtualenv\spss_online_env\lib\site-packages\django\template\loader_tags.py" in render
72. result = block.nodelist.render(context)
File "C:\Users\irene\virtualenv\spss_online_env\lib\site-packages\django\template\base.py" in render
990. bit = node.render_annotated(context)
File "C:\Users\irene\virtualenv\spss_online_env\lib\site-packages\django\template\base.py" in render_annotated
957. return self.render(context)
File "C:\Users\irene\virtualenv\spss_online_env\lib\site-packages\django\template\defaulttags.py" in render
458. url = reverse(view_name, args=args, kwargs=kwargs, current_app=current_app)
File "C:\Users\irene\virtualenv\spss_online_env\lib\site-packages\django\urls\base.py" in reverse
91. return force_text(iri_to_uri(resolver._reverse_with_prefix(view, prefix, *args, **kwargs)))
File "C:\Users\irene\virtualenv\spss_online_env\lib\site-packages\django\urls\resolvers.py" in _reverse_with_prefix
497. raise NoReverseMatch(msg)
Exception Type: NoReverseMatch at /paypal-cancel/
Exception Value: Reverse for '' not found. '' is not a valid view function or pattern name.
原文由 Ire 发布，翻译遵循 CC BY-SA 4.0 许可协议
python
当您使用 url 标签时，您应该为字符串文字使用引号，例如：
目前
product被视为变量并在错误消息中计算为''。