首先感謝您的幫助。
我創建了一個小型燒瓶網路應用程式來跟蹤“待辦事項”專案。作為應用程式的一部分，我添加了一些 Flash 訊息來協助登錄、注冊等。我似乎正確地將資訊提供給瀏覽器，但是引導類的樣式不僅僅顯示純文本訊息.
這是燒瓶應用程式的基本 html。
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
<link rel="stylesheet" type="text/css" href="{{ url_for('static', filename='ToDoList.css')}}" />
</head>
<body>
<header class="site-header">
<nav class="navbar navbar-expand-sm navbar-dark bg-steel fixed-top">
<div class="container">
<a class="navbar-brand mr-4" href="/">Just Do It Already</a>
<div class="navbar-nav ">
<a class="nav-item nav-link" href="{{ url_for('profile') }}">Profile</a>
{% if current_user.is_authenticated %}
<a class="nav-item nav-link" href="{{ url_for('logout') }}">Logout</a>
<a class="nav-item nav-link" href="{{ url_for('new_post') }}">New Task</a>
{% else %}
<a class="nav-item nav-link" href="{{ url_for('log_in') }}">Login</a>
<a class="nav-item nav-link" href="{{ url_for('register') }}">Register</a>
{% endif %}
</div>
</div>
</div>
</div>
</nav>
</header>
<main role="main" class="container">
<div class='row'>
<div class="col-md-8 mx-auto">
{% with messages = get_flashed_messages(with_categories=true) %}
{% if messages %}
{% for category, message in messages %}
<div class="alert alert-{{ category }}">
{{ message }}
</div>
{% endfor %}
{% endif %}
{% endwith %}
{% block body %}
{% endblock %}
</div>
</div>
</main>
<script src="https://cdn.jsdelivr.net/npm/@popperjs/[email protected]/dist/umd/popper.min.js" integrity="sha384-7 zCNj/IqJ95wo16oMtfsKbZ9ccEh31eOz1HGyDuCQ6wgnyJNSYdrPa03rtR1zdB" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.min.js" integrity="sha384-QJHtvGhmr9XOIpI6YVutG 2QOK9T ZnN4kzFN1RtK3zEFEIsxhlmWl5/YESvpZ13" crossorigin="anonymous"></script>
</body>
</html>
我的燒瓶訊息都包含在 chrome 開發工具檢查中顯示的類別，只是訊息沒有樣式。
知道我在這里錯過了什么嗎？
uj5u.com熱心網友回復：
bootstrap中沒有alert-error類，需要使用alert-dangeror alert-warning。你可以在這里看到所有的選項
<div class="alert alert-primary" role="alert">
A simple primary alert—check it out!
</div>
<div class="alert alert-secondary" role="alert">
A simple secondary alert—check it out!
</div>
<div class="alert alert-success" role="alert">
A simple success alert—check it out!
</div>
<div class="alert alert-danger" role="alert">
A simple danger alert—check it out!
</div>
<div class="alert alert-warning" role="alert">
A simple warning alert—check it out!
</div>
<div class="alert alert-info" role="alert">
A simple info alert—check it out!
</div>
<div class="alert alert-light" role="alert">
A simple light alert—check it out!
</div>
<div class="alert alert-dark" role="alert">
A simple dark alert—check it out!
</div>
所以你的類別應該是dangeror warning，例如：
flash('Login failed etc etc', 'danger')
轉載請註明出處，本文鏈接：https://www.uj5u.com/net/464162.html